KINDAI UNIVERSITY


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Yusuke Morisawa

Profile

FacultyDepartment of Science / Graduate School of Science and Engineering Research / Research Institute of Bio-coke
PositionAssociate Professor
DegreeDr. of Science
Commentator Guidehttps://www.kindai.ac.jp/meikan/375-morisawa-yuusuke.html
URL
Mail
Last Updated :2019/12/09

Education and Career

Education

  •   1994 04  - 1998 03 , Kwansei Gakuin University, School of Science, Department of Chemistry
  •   1998 04  - 2000 03 , Kyoto University, Graduate School of Science, Department of Chemsitry
  •   2000 04  - 2005 03 , Kyoto University, Graduate School of Science, Department of Chemistry

Academic & Professional Experience

  •   2016 04 ,  - 現在, Associate Professor, Kindai University
  •   2012 04 ,  - 2016 03 , Lecturer, Kinki University
  •   2008 04 ,  - 2012 03 , Postdoctoral fellow, Kwansei Gakuin University

Research Activities

Research Areas

  • Basic chemistry, Physical chemistry
  • Applied chemistry, Analytical chemistry
  • Applied physics, Applied materials science/Crystal engineering

Research Interests

  • Molecular Spectroscopy, Analytical Chemistry with Spectroscopy, Near Infrared Spectroscopy

Published Papers

  • Bi2Ne: Weakly bound cluster of diatomic bismuth with neon, Endo Asuka, Hatanaka Miho, Ueno Nami, Morisawa Yusuke, Wakabayashi Tomonari, LOW TEMPERATURE PHYSICS, 45(7), 689 - 696, Jul. 2019 , Refereed
  • UV-Polarizing Linear Polyyne Molecules Aligned in PVA, R. Sata; H. Suzuki; N. Ueno; Y. Morisawa; M. Hatanaka; T. Wakabayashi, CHINESE JOURNAL OF CHEMICAL PHYSICS, 32(2), 175 - 181, May 2019 , Refereed
  • Electronic Spectra of Graphene in Far- and Deep-Ultraviolet Region: Attenuated Total Reflection Spectroscopy and Quantum Chemical Calculation Study, Krzysztof B. Bec,́ Yusuke Morisawa, Kenta Kobashi, Justyna Grabska, Ichiro Tanabe, and Yukihiro Ozaki, J. Phys. Chem. C, 122, 28998 - 29008, Dec. 2018 , Refereed
  • Effects of intermolecular interactions on absorption intensities of the fundamental and the first, second, and third overtones of OH stretching vibrations of methanol and t-butanol‑d9 in n-hexane studied by visible/near-infrared/infrared spectroscopy, Yusuke Morisawa, Arisa Suga, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 197, 121 - 125, May 2018 , Refereed
  • Elucidation of the electronic states in polyethylene glycol by attenuated Total reflectance spectroscopy in the far-ultraviolet region., Ueno, N.; Wakabayashi, T.; Morisawa, Y., Spectrachimica Acta Part A: Molecular and Biomolecular Spectroscopy, 197, 170 - 175, May 2018 , Refereed
  • Rydberg transitions as a probe for structural changes and phase transition at polymer surfaces: an ATR-FUV-DUV and quantum chemical study of poly(3-hydroxybutyrate) and its nanocomposite with graphene, Krzysztof B. Beć, Yusuke Morisawa, Kenta Kobashi, Justyna Grabska, Ichiro Tanabe, Erika Tanimura, Harumi Sato, Marek J. Wójcik and Yukihiro Ozaki, Physical Chemistry Chemical Physics, 20(13), 8859 - 8873, Mar. 2018 , Refereed
  • Generation and reactions of thiirenium ions by the Cation Pool method, Akihiro Shimizu, Shun Horiuchi, Ryutaro Hayashi, Kouichi Matsumoto, Yu Miyamoto, Yusuke Morisawa, Tomonari Wakabayashi, and Jun-ichi Yoshida, ARKIVOC, 2018(2), 97 - 113, Nov. 2017 , Refereed
  • New Application of Far-ultraviolet Spectroscopy, Ichiro Tanabe, Takeyoshi Goto, Yusuke Morisawa, Yukihiro Ozaki, BUNSEKI KAGAKU, 66(5), 319 - 331, May 2017 , Refereed
  • A Correction Method for Attenuated Total Reflection–Far Ultraviolet Spectra Via the Use of Charge Transfer to Solvent Band Intensities of Iodide in the Ultraviolet Region, Akifumi Ikehata, Takeyoshi Goto, Yusuke Morisawa, Applied Spectroscopy, 71(7), 1530 - 1536, Apr. 2017 , Refereed
  • Changes in the Electronic States of Low-Temperature Solid n-Tetradecane: Decrease in the HOMO–LUMO Gap, Yusuke Morisawa , Shin Tachibana, Akifumi Ikehata, Tao Yang, Masahiro Ehara, and Yukihiro Ozaki, ACS Omega, 2(2), 618 - 625, Feb. 2017 , Refereed
  • Electronic absorption spectra of imidazolium-based ionic liquids studied by far-ultraviolet spectroscopy and quantum chemical calculations., Tanabe I, Kurawaki Y, Morisawa Y, Ozaki Y, Physical chemistry chemical physics : PCCP, 18(32), 22526 - 22530, Aug. 2016 , Refereed
  • Advances in Molecular Structure and Interaction Studies Using Near-Infrared Spectroscopy, Mirosław Antoni Czarnecki, Yusuke Morisawa, Yoshisuke Futami, and Yukihiro Ozaki, Chemical Reviews, 115(18), 9707 - 9744, Aug. 2015 , Refereed
  • Low temperature in situ Raman spectroscopy of an electro-generated arylbis(arylthio)sulfonium ion., Matsumoto K, Miyamoto Y, Shimada K, Morisawa Y, Zipse H, Suga S, Yoshida J, Kashimura S, Wakabayashi T, Chemical communications (Cambridge, England), 51(66), 13106 - 13109, Aug. 2015 , Refereed
  • Analysis of Electronic Transition of Aqueous Solutions Studied by Far-ultraviolet Spectroscopy, Takeyoshi Goto, Akifumi Ikehata, Yusuke Morisawa, Noboru Higashi and Yukihiro Ozaki, BUNSEKI KAGAKU, 64(3), 173 - 184, Apr. 2015 , Refereed
  • Surface Effect of Alumina on the First Electronic Transition of Liquid Water Studied by Far-Ultraviolet Spectroscopy, Takeyoshi Goto, Akifumi Ikehata, Yusuke Morisawa, and Yukihiro Ozaki, The Journal of Physical Chemistry Letters, 6, 1022 - 1026, Mar. 2015 , Refereed
  • Low-Lying Electronic States in Bismuth Trimer Bi3 As Revealed by Laser-Induced NIR Emission Spectroscopy in Solid Ne., Wakabayashi T, Wada Y, Nakajima K, Morisawa Y, Kuma S, Miyamoto Y, Sasao N, Yoshimura M, Sato T, Kawaguchi K, The journal of physical chemistry. A, Nov. 2014 , Refereed
  • Rydberg and π–π* Transitions in Film Surfaces of Various Kinds of Nylons Studied by Attenuated Total Reflection Far-Ultraviolet Spectroscopy and Quantum Chemical Calculations: Peak Shifts in the Spectra and Their Relation to Nylon Structure and Hydrogen B, Yusuke Morisawa, Manaka Yasunaga, Harumi Sato, Ryoichi Fukuda, Masahiro Ehara, and Yukihiro Ozaki, J. Phys. Chem. B, 118(40), 11855 - 11861, Sep. 2014 , Refereed
  • Tip-enhanced Raman spectroscopic measurement of stress change in the local domain of epitaxial graphene on the carbon face of 4H-SiC(000–1), Toshiaki Suzuki, Tamitake Itoh, Sanpon Vantasin, Satoshi Minami, Yasunori Kutsuma, Koji Ashida, Tada-aki Kaneko, Yusuke Morisawa, Takeshi Miurae, Yukihiro Ozaki, Phys. Chem. Chem. Phys, 16, 20236 - 20240, Aug. 2014 , Refereed
  • Environmentally friendly synthesis and physical and optical properties of highly reflective green–black pigments, Kazutoshi SANADA, Yusuke MORISAWA, Yukihiro OZAKI, Journal of the Ceramic Society of Japan, 122(5), 322 - 328, May 2014 , Refereed
  • Combined IR/NIR and Density Functional Theory Calculations Analysis of the Solvent Effects on Frequencies and Intensities of the Fundamental and Overtones of the C═O Stretching Vibrations of Acetone and 2-Hexanone, Yujing Chen, Yusuke Morisawa, Yoshisuke Futami, Mirosław A. Czarnecki, Hai-Shui Wang, Yukihiro Ozaki, Journal of Physical Chemistry A, 118(14), 2576 - 2583, Mar. 2014 , Refereed
    Summary:Vibrational overtone studies primarily focus on X—H stretching overtone transitions, where X is an atom like C, O, N, or S. In contrast, the studies on the C═O stretching overtones are very scattered. To advance the research in this field, we measured the fundamental, first, and second overtones of the C═O stretching vibration of acetone and 2-hexanone in n-hexane, CCl4, and CHCl3, as well as in the vapor phase using FT-IR/FT-NIR spectroscopy. Density functional theory (DFT) calculations have also been performed to help the assignment of the C═O stretching bands and to guide interpretation of the experimental results. It was found that the wavenumbers, absorption intensities, and oscillator strengths of the C═O stretching bands show marked solvent dependence. In the fundamental and the first overtone regions, the intensities of the C═O stretching vibration were found to be pronouncedly more intense than those of the C—H stretching vibration. In the second overtone region, the intensities of the C—H stretching vibration are comparable to those of the C═O stretching vibration. The theoretical and observed decrease in integrated intensity upon going from the fundamen
  • Concept and properties of an infrared hybrid single-beam spectrum and its application to eliminate solvent bands and other background interferences., Chen Y, Wang HS, Morisawa Y, Ozaki Y, Talanta, 119, 105 - 110, Feb. 2014 , Refereed
  • Electronic transitions in liquid amides studied by using attenuated total reflection far-ultraviolet spectroscopy and quantum chemical calculations., Morisawa Y, Yasunaga M, Fukuda R, Ehara M, Ozaki Y, The Journal of chemical physics, 139, 154301, Oct. 2013 , Refereed
  • Pulse laser photolysis of aqueous ozone in the microsecond range studied by time-resolved far-ultraviolet absorption spectroscopy., Goto T, Morisawa Y, Higashi N, Ikehata A, Ozaki Y, Analytical chemistry, 85, 4500 - 4506, May 2013 , Refereed
  • Terahertz Spectroscopy in Polymer Research: Assignment of Intermolecular Vibrational Modes and Structural Characterization of Poly(3-Hydroxybutyrate), Hoshina, Hiromichi; Ishii, Shinya; Yamamoto, Shigeki; Morisawa, Yusuke; Sato, Harumi; Uchiyama, Tetsuji; Ozaki, Yukihiro; Otani, Chiko, IEEE Trans Terahertz Sci Technol, 3(3), 248 - 258, May 2013 , Refereed
  • Electronic transitions of protonated and deprotonated amino acids in aqueous solution in the region 145-300 nm studied by attenuated total reflection far-ultraviolet spectroscopy., Goto T, Ikehata A, Morisawa Y, Ozaki Y, The journal of physical chemistry. A, 117, 2517 - 2528, Mar. 2013 , Refereed
  • Quantum mechanical interpretation of intermolecular vibrational modes of crystalline poly-(R)-3-hydroxybutyrate observed in low-frequency Raman and terahertz spectra., Yamamoto S, Morisawa Y, Sato H, Hoshina H, Ozaki Y, The journal of physical chemistry. B, 117, 2180 - 2187, Feb. 2013 , Refereed
  • Brill transition of nylon-6 characterized by low-frequency vibration through terahertz absorption spectroscopy, Suzuki, Hal; Ishii, Shinya; Sato, Harumi; Yamamoto, Shigeki; Morisawa, Yusuke; Ozaki, Yukihiro; Uchiyama, Tetsuji; Otani, Chiko; Hoshina, Hiromichi, Chemical Physics Letters, 575, 36 - 39, Jan. 2013 , Refereed
  • Elucidating electronic transitions from σ orbitals of liquid n- and branched alkanes by far-ultraviolet spectroscopy and quantum chemical calculations., Morisawa Y, Tachibana S, Ehara M, Ozaki Y, The journal of physical chemistry. A, 116, 11957 - 11964, Dec. 2012 , Refereed
  • Effects of lanthanoid cations on the first electronic transition of liquid water studied using attenuated total reflection far-ultraviolet spectroscopy: ligand field splitting of lanthanoid hydrates in aqueous solutions., Goto T, Ikehata A, Morisawa Y, Higashi N, Ozaki Y, Inorganic chemistry, 51, 10650 - 10656, Oct. 2012 , Refereed
  • Development of a time-resolved attenuated total reflectance spectrometer in far-ultraviolet region., Morisawa Y, Higashi N, Takaba K, Kariyama N, Goto T, Ikehata A, Ozaki Y, The Review of scientific instruments, 83, 073103, Jul. 2012 , Refereed
  • Monitoring of a calcination reaction of high reflective green-black (HRGB) pigments by using near-infrared electronic spectroscopy: calcination temperature-dependent crystal structural changes of their components and calibration of the extent of the react, Morisawa Y, Nomura S, Sanada K, Ozaki Y, Applied spectroscopy, 66, 665 - 672, Jun. 2012 , Refereed
  • The Dielectric constant dependence of absorption intensities and wavenumbers of the fundamental and overtone transitions of stretching vibration of the hydrogen fluoride studied by quantum chemistry calculations, Jorunal of Molecular Structure, 1018, 102 - 106, Jun. 2012
  • The effect of metal cations on the nature of the first electronic transition of liquid water as studied by attenuated total reflection far-ultraviolet spectroscopy., Goto T, Ikehata A, Morisawa Y, Higashi N, Ozaki Y, Physical chemistry chemical physics : PCCP, 14, 8097 - 8104, Jun. 2012 , Refereed
  • Spectroscopic characterization of a series of polyyne-iodine molecular complexes H(CºC)nH(I6) of n = 5-9, Wada, Yoriko; Morisawa, Yusuke; Wakabayashi, Tomonari, Chemical Physics Letters, 541, 54 - 59, May 2012 , Refereed
  • Isothermal crystallization of poly(3-hydroxybutyrate) studied by terahertz two-dimensional correlation spectroscopy, Hoshina, Hiromichi; Ishii, Shinya; Morisawa, Yusuke; Sato, Harumi; Noda, Isao; Ozaki, Yukihiro; Otani, Chiko, Applied Physics Letters, 100(1), 011907/1 - 011907/3, Jan. 2012 , Refereed
  • Far-ultraviolet spectroscopy in the solid and liquid states: a review, Ozaki, Yukihiro; Morisawa, Yusuke; Ikehata, Akifumi; Higashi, Noboru, Applied Spectroscopy, 66(1), 1 - 25, 2012 , Refereed
  • Development of Far-UV Spectroscopy for Liquid and Solid and Its Application to Analytical Chemistry, Yusuke Morisawa, Shin Tachibana, Manaka Yasunaga, Motoki Mitsuoka, Harumi Sato, Yukihiro Ozaki, Akifumi Ikehata, Noboru Higashi, Bunseki-kagaku, 61(7), 591 - 603, 2012 , Refereed
  • Hydrogen bonding effects on the wavenumbers and absorption intensities of the OH fundamental and the first, second, and third overtones of phenol and 2,6-dihalogenated phenols studied by visible/near-infrared/infrared spectroscopy., Gonjo T, Futami Y, Morisawa Y, Wojcik MJ, Ozaki Y, The journal of physical chemistry. A, 115, 9845 - 9853, Sep. 2011 , Refereed
  • Polarization and temperature dependent spectra of poly(3-hydroxyalkanoate)s measured at terahertz frequencies., Hoshina H, Morisawa Y, Sato H, Minamide H, Noda I, Ozaki Y, Otani C, Physical chemistry chemical physics : PCCP, 13, 9173 - 9179, May 2011 , Refereed
  • Quantitative analysis of ions in spring water in three different areas of Hyogo Prefecture in Japan by far ultraviolet spectroscopy., Mitsuoka M, Shinzawa H, Morisawa Y, Kariyama N, Higashi N, Tsuboi M, Ozaki Y, Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 27, 177 - 182, Feb. 2011 , Refereed
  • Far-Ultraviolet Spectra of n-Alkanes and Branched Alkanes in the Liquid Phase Observed Using an Attenuated Total Reflection-Far Ultraviolet (ATR-FUV) Spectrometer, TACHIBANA Shin, MORISAWA Yusuke, SATO Harumi, OZAKI Yukihiro, IKEHATA Akifumi, HIGASHI Noboru, Applied Spectroscopy, 65(2), 221 - 226, Feb. 2011 , Refereed
  • Low-n Rydberg transitions of liquid ketones studied by attenuated total reflection far-ultraviolet spectroscopy., Morisawa Y, Ikehata A, Higashi N, Ozaki Y, The journal of physical chemistry. A, 115, 562 - 568, Feb. 2011 , Refereed
  • Effect of cations on absorption bands of first electronic transition of liquid water., Ikehata A, Mitsuoka M, Morisawa Y, Kariyama N, Higashi N, Ozaki Y, The journal of physical chemistry. A, 114, 8319 - 8322, Aug. 2010 , Refereed
  • Higher order conformation of poly(3-hydroxyalkanoates) studied by terahertz time-domain spectroscopy , Hiromichi Hoshina, Yusuke Morisawa, Harumi Sato, Akitsugu Kamiya, Isao Noda, Yukihiro Ozaki and Chiko Otani, Applied Physics Letter, 96(10), 101904, Mar. 2010 , Refereed
  • Attenuated total reflectance–far ultraviolet (ATR–FUV) spectra of CH3OH, CH3OD, CD3OH and CD3OD in a liquid phase ∼Rydberg states∼, Yusuke Morisawa, Akifumi Ikehata, Noboru Higashi, Yukihiro Ozaki, Chem. Phys. Lett., 476(4-6), 205 - 208, May 2009 , Refereed
  • Photodissociation dynamics of 2,5-dihydroxyacetophenone., Morisawa Y, Dyakov YA, Tseng CM, Lee YT, Ni CK, The journal of physical chemistry. A, 113, 97 - 102, Jan. 2009 , Refereed
  • Correlation between Nuclear Spin Ratio of cyclic-C3H2 and Chemical Evolution in TMC-1 Core, Yusuke Morisawa, Mizuho Fushitani, Yoshiyasu Kato, Hiromichi Hoshina, Zenzo Simizu, Shiori Watanabe, Yuki Miyamoto, Yasuko Kasai, Kentarou Kawaguchi, Takamasa Momose, Astrophysical Journal , 642, 954 - 965, 2006 , Refereed
  • Search for CCH-, NCO-, and NCS- Negative Ions in Molecular Clouds , MORISAWA Yusuke, HOSHINA Hiromichi, KATO Yoshiyasu, SIMIZU Zenzo, KUMA Susumu, SOGOSHI Norihito, FUSHITANI Mizuho, KASAI Yasuko, KAWAGUCHI Kentarou, Publ Astron Soc Jpn , 57(2), 325 - 334, Apr. 2005 , Refereed
  • UV and IR absorption spectra of C3 embedded in solid para-hydrogen, Hoshina, Hiromichi; Kato, Yoshiyasu; Morisawa, Yusuke; Wakabayashi, Tomonari; Momose, Takamasa, Chemical Physics, 300(1-3), 69 - 77, 2004 , Refereed

Books etc

  • Molecular Spectroscopy(Yukihiro Ozaki, Marek J. Wojcik, Jurgen Popp Ed), Masahiro Ehara, Yusuke Morisawa, Contributor, Sec. 4 , Wiley-VHC,   2019 09 , 978-3527344611
  • Frontiers and Advances in Molecular Spectroscopy (Ed. Jaan Laane), Yusuke Morisawa, Ichiro Tanabe, Yukihiro Ozaki, Contributor, Advances in Far-Ultraviolet Spectroscopy in the Solid and Liquid State, Elsevier,   2017 10 , 9780128112212
    Summary:https://www.elsevier.com/books/frontiers-and-advances-in-molecular-spectroscopy/laane/978-0-12-811220-5
  • Far- and Deep-Ultraviolet Spectroscopy, Contributor, Springer,   2015 06

Conference Activities & Talks

  • Study of Electronic States of Deep Eutectic Solvents by using Attenuated Total Reflectance Spectroscopy in the Far-UV spectroscopy, Kazutaka Nishikido, Yusuke Morisawa, Japan-Taiwan Medical Spectroscopy International Symposium,   2016 12 06
  • Study of electronic transitions of polymers by using attenuated total reflectance spectroscopy in the far-UV region, Yusuke Morisawa, Erika Tanimura,Yukihiro Ozaki, Japan-Taiwan Medical Spectroscopy International Symposium,   2016 12 06
  • Decreasing of electronic transitions of Poly Ethylene Glycol Applied to Li/PEG complex, Nami Ueno, Yusuke Morisawa, Japan-Taiwan Medical Spectroscopy International Symposium,   2016 12 05
  • Electronic state of nano carbon and nano carbon/polymer nanocomposite studied by attenuated total reflectance (ATR) far- and deep-ultraviolet spectroscopy, Kenta Kobashi, Yusuke Morisawa, Harumi Sato, Ichiro Tanabe, Takeyoshi Goto,Yukihiro Ozaki, Japan-Taiwan Medical Spectroscopy International Symposium,   2016 11 06
  • Study of Electronic States of Molecules in the Condensed Phase by Using Attenuated Total Reflectance Far-UV Spectroscopy, Yusuke Morisawa, SCIX 2016 ,   2016 09 20
  • Electronic States of Composite Polymer Electrolyte Composed of PEG and Lithium-salts., Nami Ueno, Tomonari Wakabayashi, Yusuke Morisawa, SCIX 2016 ,   2016 09 19
  • 遠紫外分光と量子化学計算によるイミダゾリウム系イオン液体の電状態研究, 田邉 一郎,藏脇 悠司,森澤 勇介,尾崎 幸洋, 第10回分子科学討論会2016神戸,   2016 09 16
  • ナノカーボン材料およびポリマーナノコンポジットの電子状態の研究, 小橋 健太,田邉 一郎,森澤 勇介,佐藤 春実,後藤 剛喜,尾崎 幸洋, 第10回分子科学討論会2016神戸,   2016 09 15
  • 減衰全反射遠紫外分光法による凝縮相中の分子間相互作用による電子状態の変化, Yusuke Morisawa, 第10回分子科学討論会2016神戸,   2016 09 15
  • ネオンマトリックス中に捕捉されたビスマス二量体のPLマップにおけるサテライト構造, 遠藤 あすか,畑中 美穂,森澤 勇介,若林 知成, 第10回分子科学討論会2016神戸,   2016 09 13
  • ポリエチレングリコール酸素原子へのカチオン配位による電子状態の変化, 野 那美,森澤 勇介,若林 知成, 第10回分子科学討論会2016神戸,   2016 09 13
  • Study of electronic transitions by using attenuated total reflectance spectroscopy in the far-UV region, Yusuke Morisawa,Shin Tachibana,Masahiro Ehara,Yukihiro Ozaki, SPIE Nanoscience + Engineering 2016,   2016 08 28
  • 減衰全反射型遠紫外〜深紫外分光法によるナノカーボン材料およびポリマーナノ コンポジットの電子状態の研究, 小橋健太,田邉一郎,森澤勇介,佐藤春実,後藤剛喜,尾崎幸洋, 平成28年度 日本分光学会年次講演会,   2016 05 24
  • 減衰全反射遠紫外スペクトルを用いたイオン液体中のアニオンについての電子 状態の研究, 森澤勇介,田邉一郎 , 平成28年度 日本分光学会年次講演会,   2016 05 26
  • ポリアルカングリコールの分子構造による電子状態の変化, 上野那実,森澤勇介, 平成28年度 日本分光学会年次講演会,   2016 05 26
  • 遠紫外分光法と量子化学計算を利用したイオン液体の電子状態研究, 田邉一郎,藏脇悠司,森澤勇介,尾崎幸洋, 平成28年度 日本分光学会年次講演会,   2016 05 26
  • ATR-FUV 分光法による CTTS バンドの観察:塩化ナトリウムの分光学的定量法, 池羽田晶文,森澤勇介, 平成28年度 日本分光学会年次講演会,   2016 05 24
  • ポリアルカングリコールの遠紫外スペクトルの帰属と電子状態 の固液変化についての研究, 上野那美,森澤勇介, 日本化学会 第96春季年会 (2016),   2016 03 27
  • 減衰全反射型遠紫外~深紫外分光法によるナノカーボン材料お よびナノカーボン/ポリマーナノコンポジットの電子状態評価, 小橋健太,田邉一郎,森澤勇介,佐藤春実,後藤剛喜,尾崎幸洋, 日本化学会 第96春季年会 (2016),   2016 03 27
  • 減衰全反射遠紫外分光法による単結合からなるイオン液体の電 子状態の研究, 森澤勇介,曽我賢冶,田邉一郎, 日本化学会 第96春季年会 (2016),   2016 03 27
  • 減衰全反射遠紫外分光と量子化学計算によるイミダゾリウム系 イオン液体の電子状態研究, Ichiro Tanabe,Yuji Kurawaki,Yusuke Morisawa,Yukihiro Ozaki, 日本化学会 第96春季年会 (2016),   2016 03 27
  • 電解酸化により発生・蓄積させたチイレニウムイオンの反応性, 堀内 俊,林 竜太朗,清水章弘,松本浩一,宮本侑,森澤勇介,若林知成,吉田潤一, 日本化学会 第96春季年会 (2016),   2016 03 25
  • 減衰全反射遠紫外分光法を用いた凝縮相における単結合分子骨格の電子状態研究, Yusuke Morisawa, 日本分光学会遠紫外分光部会 第1回講演会,   2016 01 20
  • Study of electronic states of aqueous solutions of sodium halides by using temperature dependence attenuated total reflectance spectroscopy in the far ultraviolet region, Yuka Nishikawa, Yusuke Morisawa, Akifumi Ikehata, Pacifichem 2015,   2015 12 18
  • Study of surface analysis of polystyrene nano particle by using attenuated total reflectance spectroscopy in the far-UV region, Yusuke Morisawa, Pacifichem 2015,   2015 12 17
  • Study of electronic state of polyethylene glycol using attenuated total reflectant spectrosopy in far ultraviolet, Nami Ueno、Yusuke Morisawa, Pacifichem 2015,   2015 12 17
  • Far UV absorption spectroscopy of linear polyyne molecules in solutions, Yoriko Wada, Usuke Morisawa, Tomonari Wakabayashi, Yukihiro Ozaki, Pacifichem 2015,   2015 12 16
  • Study of absorption intendsities in the near infrared region for the first and second overtones of OH and NH stretching vibration with hydrogen bonding, Misaki Tatsumi, Yusuke Morisawa, Pacifichem 2015,   2015 12 16
  • Temperature Dependence of FUV Spectra for Aqueous Solutions of Alkali Halide to the Freezing-point of Eutectic, Yusuke Morisawa, Yuka Nishikawa, Akifumi, Ikehata, Scix 2015,   2015 09 28
    Summary:(97)
  • Studies of Electronic States of CNT/Rubber Nanocomposites by using Attenuated Total Reflectance Spectroscopy in the Ultraviolet Region, Yusuke Morisawa, Kenta Kobashi, Ichiro Tanabe, Harumi Sato, Takeyoshi Goto, Yukihiro Ozaki, Scix 2015,   2015 09 28
    Summary:(109)
  • Investigation of Electronic States of Nano Carbon/Polymer Nanocomposites by Attenuated Total Reflectance-Ultraviolet Spectroscopy, Kenta Kobashi, Ichiro Tanabe, Yusuke Morisawa, Harumi Sato, Takeyoshi Goto, Yukihiro Ozaki, Scix 2015,   2015 09 28
    Summary:(110)
  • 低温アルカン固体で観測されるHOMO-LUMOギャップの減少についての研究, 森澤勇介、立花 慎,池羽田 晶文,江原 正博,尾崎 幸洋, 第9回 分子科学討論会,   2015 09 19
    Summary:4D07
  • 減衰全反射遠紫外分光法を用いたポリエチレングリコール電子状態の水素結合による変化, Nami Ueno, Yusuke Morisawa, 第9回 分子科学討論会,   2015 09 19
    Summary:4P049
  • 減衰全反射紫外分光法によるカーボン材料/ポリマーナノコンポジットの電子状態の研究, 小橋 健太,田邉 一郎,森澤 勇介,佐藤 春実,後藤 剛喜,尾崎 幸洋, 第9回 分子科学討論会,   2015 09 19
    Summary:4P051
  • 減衰全反射遠紫外分光法によるポリエチレングリコールの表面分析, 森澤勇介, 上野那美, 日本分析化学会年会,   2015 09 11
    Summary:J3007
  • 第一,第二,第三級アルコールのOH伸縮振動第一,第二倍音の水素結合の有無による吸収強度の変化の研究, 立美美沙紀, 森澤勇介, 日本分析化学会年会講演要旨集,   2015 09 11
    Summary:J3002Y
  • 遠紫外分光法によるナトリウムハロゲン化物水溶液中のハロゲン化物イオンCTTSバンドに現れる変化からみた,低温溶液および固体中の電解質水和状態に関する研究, 西川由華, 森澤勇介, 日本分析化学会年会,   2015 09 11
    Summary:J3005
  • 遠紫外CTTSバンドを用いた塩化物イオンの定量, 池羽田晶文, 森澤勇介, 日本分析化学会年会,   2015 09 09
    Summary:P1128
  • Effect of Intermolecular Interactions on Absorption Intensities of the First and Second Overtones of OH and NH Stretching Vibrations Studied by Near-Infrared Spectroscopy, Yusuke Morisawa, Misaki Tatsumi, Yukihiro Ozaki, 8th International Conference on Advanced Vibrational Spectroscopy,   2015 08 14
    Summary:In the present study we have investigated effects of intermolecular interactions on absorption intensities of the OH and NH the first and second overtones of 1-octanol, and pyrrole in none polar solvent by using NIR spectroscopy. We selected these molecules because they easily form hydrogen-bonding aggregates while in enough dilute solutions they do not form hydrogen-bonding species and have an intermolecular interaction with a solvent (solvent effect). We investigated higher order overtones than previous work.
  • Study of the electronic state on nano-surface of cast LDPE film by using ATR-FUV spectroscopy; Redcution of the HOMO-LUMO gap on the surface, Yusuke Morisawa, Erika Tanimura, Shin Tachibana, Masahiro Ehara, Yukihiro Ozaki, morisawayusuke,   2014 10 02 , FACSS
    Summary:Far-ultraviolet (FUV) spectroscopy has been a subject of considerable interest because it provides unique information about the electronic states and their transitions of molecules which usual UV region cannot provide. However, investigations on FUV spectra in the condensed phase have long been rare because of the difficulty in observing whole FUV bands of liquid and solid samples owing to their strong absorption. Thus, studies of FUV spectra in the condensed phase give the novel information of the energy gap of the frontier orbital and will use in the precise consideration of chemical reaction in the condensed phase. Recently, we developed an attenuated total reflection (ATR) technique for use in the FUV region. By using the ATR-FUV, we can measured FUV spectra more feasibly. In this presentation, ATR-FUV spectra were measured for low-density polyethylene (LDPE) films prepared by two different methods. A pressed LDPE film showed the similar spectrum to liquid n-alkane, while the spectrum of a cast LDPE film was totally different feature from the press film. The 8.0-eV band was weaken, and two bands peaked at 6.3 and 5.5 eV were appeared. The component which have the novel 3-bands component could be found on the nano-surface because the penetration depth of the ATR-FUV is lower than 100 nm, and the transmittance spectrum of cast LDPE film doesn`t show thecomponent. At the lower energy region very small signal was found at 4.5eV. Those features are similar to low-temperature solid of n-alkane. The origin of these spectral changes was investigated by quantum chemical calculations that calculate orbital energy and electronic transitions of model dimer by changing the intermolecular distance between two molecules. These results provide new insight: valence molecular orbitals, even σ orbitals, interact with their neighbors in the condensed phase. As a result, the band gap energy is reduced by about 3 eV, which corresponds to one third of the liquid state. The surface of the cast LDPE film shows the reduction on the surface of casting film at room temperature.
  • 衰全反射遠紫外分光法を用いた固体表面の分光分析, morisawayusuke,   2014 09 19 , 招待有り
  • タイトル(英語), 講演者(英語), morisawayusuke,   2014 03
  • タイトル(英語), 講演者(英語), 会議名(英語),   2014 03 , 主催者(英語)
    Summary:概要(英語)
  • First Electronic Transition of Vicinal Water of α-Alumina Surface Studied by Attenuated Total Reflection Far-Ultraviolet Spectroscopy, UV-DUV Plasmonics and Nanophotonics Workshop (UPN2013),   2013 10 , UV-DUV Plasmonics and Nanophotonics Workshop (UPN2013)
  • Low-frequency Raman and Terahertz spectroscopies and Quantum chemical calculation studies on temperature-dependent structural changes in Nylon 6, SCIX 2013,   2013 10 , SCIX 2013
  • Study of S0→S3 Transition for Liquid Benzene and Mono-Substituted Benzenes by Using Far-Ultraviolet Spectroscopy and Quantum Chemical Calculations, SCIX 2013,   2013 10 , SCIX 2013
  • Temperature and Consentration Dependence of Far Ultraviolet Spectra in Alcohol-Hexane Solution ~ Alternation of Hydrogen bonding~, SCIX 2013,   2013 10 , SCIX 2013
    Summary:Poster;FUV Spectrum of methanol in the pure-liquid states have already reported by using attenuated total reflection (ATR) - FUV spectroscopy. Concentration dependence of tail structure in the region of 190-210 nm has been observed. The molar absorption coefficient of the tail structure was decreasing with the increase of the concentration of methanol. In the present study, temperature dependence of the tail structure for the alcohol-hexane solution of the different concentration. Temperature dependence of the molar absorption coefficients were increasing with the increasing of temperature for the conc-solution, on the other hand, that for the diluted solution were decreasing. We will discuss about this alternation of the temperature dependence
  • Effects of Intermolecular Interactions on Absorption Intensities of the Fundamental and Overtones of OH Stretching Vibrations, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Infrared Spectra of the Polyynes and Polyyne-Iodine Complexes in Solutions, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Terahertz vibrational spectroscopy of poly(3-hydroxybutyrate) and nylon, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Near-Infrared Electronic Spectra of High Reflective Green-Black (HRGB) Pigments, Its Related Pigments, and Their Components Inorganic Materials, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Non-ideality of Acetic Acid/Water Binary Mixture Studied by Near-Infrared and Far-Ultraviolet Spectroscopy, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Study on Temperature-dependent Structural Changes due to Intermolecular Interaction of Nylon 6 by using Low-frequency Raman, Terahertz Spectroscopies and Quantum Chemical Calculation, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Terahertz vibrational spectroscopy of poly(3-hydroxybutyrate) and nylon, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Time Resolved Raman Spectroscopy of Electrochemically Generated ArS(ArSSAr)+, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Tip-enhanced Raman spectroscopic measurement of epitaxial graphene prepared by SiC thermal decomposition method, 7th International Conference on Advanced Vibrational Spectroscopy,   2013 08 , 7th International Conference on Advanced Vibrational Spectroscopy
  • Intermolecular vibrational modes of crystalline poly-(R)-3-hydroxybutyrate, 19th European Symposium on Polymer Spectroscopy (ESOPS19),   2013 07 , 19th European Symposium on Polymer Spectroscopy (ESOPS19)
    Summary:P-05
  • Temperature-dependent structural changes and intermolecular hydrogen bonds in Nylon 6 studied by low-frequency Raman and Terahertz spectroscopies and Quantum chemical calculation, 19th European Symposium on Polymer Spectroscopy (ESOPS19),   2013 07 , 19th European Symposium on Polymer Spectroscopy (ESOPS19)
  • Electronic Transitions from Liquid Amides Studied by Attenuated Total Reflection Far-Ultraviolet Spectroscopy and Quantum Chemical Calculations, 33rd International Conference on Solution Chemistry,   2013 07 , 33rd International Conference on Solution Chemistry
    Summary:3PB20
  • Study of Electron Transition for the liquid benzene and mono-substituted benzenes by using far-ultraviolet spectroscopy and quantum chemical calculations, 33rd International Conference on Solution Chemistry,   2013 07 , 33rd International Conference on Solution Chemistry
    Summary:2PB06
  • Spectroscopy, Yusuke Morisawa, Daitarou Ishikawa, Shigeki Yamamoto, Toshiaki Suzuki, Yasutaka Kitahama, Yukihiro Ozaki , 光学,   2013 04 , 招待有り
  • Far-Ultraviolet (FUV) Spectroscopy in the Slid and Liquid States, Principle Instrumentation, and Application, 森澤 勇介, 後藤剛嬉 池羽田晶文 , 東昇, 尾崎幸洋, Encyclopedia of Analytical Chemistry,   2013 03
    Summary:DOI: 10.1002/9780470027318.a9287
  • A study of electronic state of nylon at the extreme surface by using attenuated total reflection spectroscopy in far ultraviolet region, The 9th SPSJ International Polymer Conference,   2012 12 , The 9th SPSJ International Polymer Conference
  • Electronic States on Extreme Surface of Polymers Studied by Using Attenuated Total Reflection Spectroscopy in Far Ultraviolet Region, The 9th SPSJ International Polymer Conference,   2012 12 , The 9th SPSJ International Polymer Conference
  • Temperature-dependent structural changes and hydrogen bonding in Nylon studied by low frequency Raman and Terahertz spectroscopy, The 9th SPSJ International Polymer Conference,   2012 12 , The 9th SPSJ International Polymer Conference
  • Study of electronic state of polyethylene on surface by using attenuated total ref1ection in far-UV region,   2012 11
  • Extreme Surface Analysis of Polyethylenes by Attenuated Total Reflection Far-ultraviolet Spectroscopy - Comparison with Atomic Force Microscope, FACSS presents SciX 2012,   2012 10 , FACSS presents SciX 2012
    Summary:poster presentation (221)
  • Far-Ultraviolet Spectroscopy in the Solid and Liquid States, FACSS presents SciX 2012,   2012 10 , FACSS presents SciX 2012
    Summary:Oral Presentation (671)
  • Intermolecular Vibrations of poly-(R)-3-hydroxybytyrate in Low-Frequency Raman and THz Time-Domain Spectra Explored by DFT calculation with Cartesian Coordinate Tensor Transfer, FACSS presents SciX 2012,   2012 10 , FACSS presents SciX 2012
    Summary:presentation (611)
  • Two-Dimensional Correlation Spectroscopy of Polymer in Terahertz Frequency Region, FACSS presents SciX 2012,   2012 10 , FACSS presents SciX 2012
    Summary:oral presentation (370)
  • ATTENUATED TOTAL REFLECTION SPECTROSCOPY IN FAR ULTRAVIOLET REGION (ATR-FUV) FOR EXTREME SURFACE OF POLYMERS, RSC Tokyo International Conference, International Session, JASIS Conference,   2012 09 , RSC Tokyo International Conference, International Session, JASIS Conference
    Summary:A technique for the surface analysis of polymers regarding molecular level is needed. ATR-IR spectroscopy has been widely used for surface analysis of polymers. In the measurement of ATR-IR, however, the depth of analysis is reached to several micrometers. In the far-UV region, transitions of the valence electrons have been observed in the liquid phase by using ATR-FUV spectroscopy. Because the penetration depth is proportional to the wavelength, it is tens of nanometers in the ATR-FUV measurement. Thus, if we applied the ATR-FUV to the polymers, one should be possible to obtain the information of electronic structure localized to the more extreme surface by using ATR-FUV. In this study, we originally developed FUV spectrometer for investigating extreme surface of polymers by using ATR technique. To test the instrument, we studied electronic state of several kinds of polyethylenes.
  • MONITORING OF PHOTOREACTION OF OZONE WATER BY USING NOVEL TIME-RESOLVED FAR-ULTRAVIOLET SPECTROSCOPY., RSC Tokyo International Conference, International Session, JASIS Conference,   2012 09 , RSC Tokyo International Conference, International Session, JASIS Conference
  • Vibrational Spectroscopy of Nylon Samples in Terahertz Frequency Region, The 2nd International Symposium on Terahertz Nanoscience (TeraNano 2012),   2012 07 , The 2nd International Symposium on Terahertz Nanoscience (TeraNano 2012)
  • Assignments and analyses of vibrational bands in THz and low-frequency Raman spectra of poly-(R)-3-hydroxybutyrate (PHB) based on the DFT calculation with Cartesian coordinate tensor transfer method, European Optical Society,   2012 06 , European Optical Society
  • Terahertz Vibrational Spectroscopy of Polymers with Hydrogen Bonds, European Optical Society,   2012 06 , European Optical Society
  • Near Infrared Spectroscopy,   2012 06
  • Study of Photo-dissociation of Phenol and Tryptophan by using Time-Resolved Attenuated Total Reflection Spectroscopy for Far-UV region,   2012 05
  • Relation between Surface Structure of Polyethylene and its Far-UV Spectra by using Attenuated Total Reflection Spectroscopy,   2012 05
  • Expanding World of Vibrational Spectroscopy: Advances Brought by Ultra-Short Pulse Laser Light , Yusuke Morisawa, Yukihiro Ozaki, Hiromichi Hoshina, 光学,   2011 08 , 招待有り
  • Terahertz spectroscopy of poly(3-hydroxyalkanoate)s, Hoshina, Hiromichi; Morisawa, Yusuke; Ishii, Shinya; Sato, Hammi; Noda, Isao; Ozaki, Yukihiro; Otani, Chiko, Annual Report - Conference on Electrical Insulation and Dielectric Phenomena,   2011
  • Analysis of Water and Aqueous Solutions by Far Ultraviolet Spectroscopy , Akifumi Ikehata, Takeyoshi Goto, Yusuke Morisawa, Yukihiro Ozaki, Noboru Higashi, Bunseki-kagaku,   2011 , 招待有り
  • Correlation between Nuclear Spin Ratio of cyclic-C3H2 and Chemical Evolution in TMC-1 Core , Yusuke Morisawa, 分光研究,   2006 , 招待有り

Misc

  • Analysis Using a Multivariable Statistical Method, Yusuke Morisawa, Analytical Sciences, 35, 8, 833, 834,   2019 08 , Refereed, 招待有り, 10.2116/analsci.highlights1908
  • Investigation for electronic states of molecules in gel and solid electrolytes using attenuated total reflectance spectroscopy in the far-UV region, Yusuke Morisawa, Nami Ueno, Kazutaka Nishikido, Proceedings of SPIE - The International Society for Optical Engineering, 10727,   2018 01 01 , 10.1117/12.2320923, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85054813138&origin=inward
    Summary:© SPIE 2018. Far-ultraviolet (FUV) spectroscopy gives rich information about changes in the electronic states of molecules from interactions in condensed phase. We are investigated electronic states of molecules in the condensed ionic environment such as gel electrolytes, ionic liquids, and deep eutectic solvents. To measure the FUV spectra for liquid and solid nondestructively and feasibly, attenuate total reflectance (ATR) spectroscopy were developed to measure spectra of liquid, gel and solid samples in the 140-300 nm region. In this paper, we discuss about changes by interaction due to ionic environment in the electronic state of poly (ethylene glycol) (PEG) in gel electrolytes with Li salts, and deep eutectic solvents composed of acetamide and Li salts.
  • Advances in Far-Ultraviolet Spectroscopy in the Solid and Liquid States, Yusuke Morisawa, Ichiro Tanabe, Yukihiro Ozaki, Frontiers and Advances in Molecular Spectroscopy, 251, 285,   2017 11 13 , 10.1016/B978-0-12-811220-5.00007-1, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85042666323&origin=inward
    Summary:© 2018 Elsevier Inc. All rights reserved. This chapter is concerned with recent advances in far-ultraviolet (FUV) spectroscopy of liquids and solids. In the FUV region not only - and n-π but also Rydberg transitions may be observed. Using an attenuated total reflection (ATR)-FUV spectrometer, one can measure FUV spectra of almost all kinds of solid and liquid samples. The most fundamental advantage of FUV spectroscopy is that it contains unique information about the electronic transitions and structure of molecules. In this chapter principle, advantages, and instrument of FUV spectroscopy for studies of condensed matters are described first, and then ATR-FUV studies of electronic structure of organic molecules, polymers, and water are reported. To interpret their spectra quantum chemical calculations were carried out. Finally, FUV spectroscopy of inorganic semiconductor powders is discussed. ATR-FUV spectroscopy has opened a new avenue for σ chemistry.
  • Changes in electronic states of molecules resulted from interactions in the condensed phase, Yusuke Morisawa, Nami Ueno, Shin Tachibana, Masahiro Ehara, Yukihiro Ozaki,, Proc. of SPIE, 10351,   2017 08 , Refereed, 招待有り, 10.1117/12.2273128, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85034098832&origin=inward
    Summary:© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. The wavelength region shorter than 200 nm, far-ultraviolet (FUV) region, is very rich in information about the electronic states and structure of a molecule. We have recently developed a totally new UV spectrometer based on attenuated total reflection (ATR) that enables us to measure spectra of liquid and solid samples in the 140-280 nm region. This paper shows the studies by the attenuated total reflection far-ultraviolet (ATR-FUV) spectroscopy. Intermolecular interactions between alkyl chains such as CH - -HC should be reflected in the phase behavior of organic compounds. We measured the attenuated total reflectance spectra in the far-UV region (145-300 nm) of n-tetradecane (Tm = 5.9 °C) from 15 to -38 °C to determine its temperature dependency. With decreasing temperature, the absorption band at 153 nm in the liquid phase becomes weaker and new bands appear at around 200 and 230 nm. These results suggest that an unusually compressed structure might be generated at the surface at low temperatures, and this phase change, which is reversible, is responsible for the unusual absorption observed in the ATR-FUV spectra. We have also investigated composite polymer electrolytes (CPE). ATR-FUV spectra of CPEs composed of Poly(ethylene oxide) (PEO) and Li salt were observed and its variation of anions for the CPEs are studied.
  • Far ultraviolet spectroscopy; Introduction to novel electronic spectroscopy and its application., Yusuke Morisawa, Chemistry (Kagaku), 72, 3, 31, 35,   2017 02 , 招待有り
  • Study of electronic transitions by using attenuated total reflectance spectroscopy in the far-UV region, Yusuke Morisawa; Shin Tachibana; Masahiro Ehara; Yukihiro Ozaki, Proc. of SPIE, 9926, 992604-(1), 992604-(7),   2016 09 , Refereed, 10.1117/12.2238790, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85006482241&origin=inward
    Summary:© 2016 SPIE. The wavelength region shorter than 200 nm, far-ultraviolet (FUV) region, is very rich in information about the electronic states and structure of a molecule. Since the molar absorption coefficient is very high (∼105 mol-1 dm3 cm-1) in the FUV region, the electronic states and structure mainly for gas molecules has been investigated for a long time. On the other hand, as to molecules in the condensed phase transmittance spectra could not measure because of high molecular density, and reflection spectroscopy has been used to observe spectra of solid samples in the FUV region. However, for liquid samples generally either absorption spectroscopy or specular reflection spectroscopy was difficult to observe. Accordingly, FUV spectroscopy for liquid samples has been a relatively undeveloped research area. To solve the above difficulties of FUV spectroscopy we have recently developed a totally new UV spectrometer based on attenuated total reflection (ATR) that enables us to measure spectra of liquid and solid samples in the 140-280 nm region. This paper shows the studies by the attenuated total reflection far-ultraviolet (ATR-FUV) spectroscopy. These investigations elucidate the electronic structure and electronic transition in the FUV region for molecules such as n- and branched alkanes, alcohols, ketones, amides, and nylons in the liquid or solid phase. The consistent assignments were performed with a help of quantum chemical calculation.
  • Attenuated total reflection far-ultraviolet spectroscopy, Yukihiro Ozaki; Yusuke Morisawa; Takeyoshi Goto; Ichiro Tanabe, Proc. of SPIE, 9926, 992603-(1), 992603-(6),   2016 09 , Refereed, 10.1117/12.2236269, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85006507560&origin=inward
    Summary:© 2016 SPIE. Recently, far-ultraviolet (FUV) spectroscopy of solid and liquid states has been a matter of keen interest because it provides new possibilities for studying electronic structures and transitions of almost all kinds of molecules. It has also great potential for a variety of applications from quantitative and qualitative analysis of aqueous solutions to environmental and geographical analyses. This review describes the state-of- the-art of FUV spectroscopy; an introduction to FUV spectroscopy, the development of FUV spectrometers, investigations on electronic transitions and structure, its various applications, and future prospects.
  • Study of Electronic Transition of Molecules in the Condensed Phase by using Attenuated Total Reflectance Spectroscopy, Yusuke Morisawa, Journal of the Spectroscopical Society of Japan, 65, 2, 92, 103,   2016 , Refereed, 招待有り
  • 溶液中の分子会合状態によって変化する振動倍音遷移の吸収強度の研究, 森澤勇介, 森田成昭, FERI Act Rep, 25, 46, 52,   2015 03 31 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201502212565315797
  • Terahertz vibrational spectroscopy of poly(3-hydroxybutyrate) and nylon: Potential of terahertz spectroscopy for polymer science, Hiromichi Hoshina, Shinya Ishii, Hal Suzuki, Chiko Otani, Yusuke Morisawa, Harumi Sato, Shigeki Yamamoto, Yukihiro Ozaki, Isao Noda, Proceedings of IEEE International Conference on Solid Dielectrics, ICSD, 497, 500,   2013 12 01 , 10.1109/ICSD.2013.6619826, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891600617&origin=inward
    Summary:Terahertz absorption spectra of poly(3-hydroxybutylate) (PHB) and nylon were measured by a terahertz time domain spectrometer and a Fourier transform far-infrared spectrometer. Clear differences were observed between the spectra of crystalline and amorphous PHB, indicating that the absorption peaks observed in the THz spectra originated in the higher-order conformation of PHB. Direction of the vibrational transition moments was obtained by the polarization spectra of stretched sample in which the crystal axis were aligned. On the basis of these results, the structural change in PHB is studied. The isothermal crystallization of PHB is monitored with the help of THz absorption spectra. The observed spectra clearly show the crystal growth, and the crystallization rate is estimated by Avrami's model. The higher order conformations of the nylon were determined by the X-ray diffraction measurement. Different spectral features among the samples were interpreted as the characteristics of higher order conformations of nylons. © 2013 IEEE.
  • Spectroscopy, Yusuke Morisawa, Daitarou Ishikawa, Shigeki Yamamoto, Toshiaki Suzuki, Yasutaka Kitahama, Yukihiro Ozaki , 42, 4, 170, 175,   2013 04 , Refereed, 招待有り
  • Far-Ultraviolet (FUV) Spectroscopy in the Slid and Liquid States, Principle Instrumentation, and Application, Encyclopedia of Analytical Chemistry, 2013, March, 1, 21,   2013 03 , 10.1002/9780470027318.a9279
    Summary:DOI: 10.1002/9780470027318.a9287
  • Vibrational spectra of nylon-6, nylon-6/6, nylom-11 and nylon-12 studied by terahertz spectroscopy, S. Ishii, S. Ishii, H. Suzuki, Y. Morisawa, Y. Morisawa, H. Sato, S. Yamamoto, Y. Ozaki, C. Otani, T. Uchiyama, H. Hoshina, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz,   2012 12 01 , 10.1109/IRMMW-THz.2012.6380372, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84873449766&origin=inward
    Summary:Terahertz absorption spectra were measured for nylon-6/6, nylon-6, nylon-11 and nylon-12 by Fourier transform far-infrared spectroscopy. Different spectral features among the four species were interpreted as the characteristics of crystalline conformations of nylons. © 2012 IEEE.
  • Terahertz spectroscopy of poly(3-hydroxyalkanoate)s, Hoshina, Hiromichi; Morisawa, Yusuke; Ishii, Shinya; Sato, Hammi; Noda, Isao; Ozaki, Yukihiro; Otani, Chiko, Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, 1, 195, 198,   2011 12 01 , 10.1109/CEIDP.2011.6232630, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84864655876&origin=inward
    Summary:Terahertz (THz) absorption spectra of poly(3-hydroxyalkanotes) (PHA) were measured by a terahertz timedomain spectrometer and Fourier transform far-infrared spectrometer. Clear differences were observed between the spectra of crystalline and amorphous PHA, indicating that the absorption peaks observed in the THz spectra originated in the higher-order conformation of PHA. Direction of the vibrational transition moments was obtained by the polarization spectra of stretched sample in which the crystal axis were aligned. THz spectra were also measured over a temperature range from 10 K to 465 K with a liquid helium cryostat and a heating cell. The temperature dependences of the spectra reveal frequency shifts and broadening of the absorption peaks with temperature, suggesting large anharmonicity of the vibrational potential. © 2011 IEEE.
  • Isothermal crystallization of poly(3-hydroxybutyrate) studied by terahertz time-domain spectroscopy, Shinya Ishii, Shinya Ishii, Hiromichi Hoshina, Yusuke Morisawa, Harumi Sato, Isao Noda, Yukihiro Ozaki, Chiko Otani, IRMMW-THz 2011 - 36th International Conference on Infrared, Millimeter, and Terahertz Waves,   2011 12 01 , 10.1109/irmmw-THz.2011.6104876, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84855865472&origin=inward
    Summary:Isothermal crystallization of poly(3-hydroxy-butyrate) was studied by terahertz time-domain spectroscopy. The temporal change of the ratio between the crystalline and amorphous structure was estimated by the integrated absorption intensity. The crystallization process was discussed by using Avrmi's equation. © 2011 IEEE.
  • Isothermal crystallization of poly(3-hydroxybutylate) studied by terahertz two-dimensional correlation spectroscopy, Hiromichi Hoshina, Shinya Ishii, Shinya Ishii, Yusuke Morisawa, Harumi Sato, Isao Noda, Yukihiro Ozaki, Chiko Otani, IRMMW-THz 2011 - 36th International Conference on Infrared, Millimeter, and Terahertz Waves,   2011 12 01 , 10.1109/irmmw-THz.2011.6104771, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84855869100&origin=inward
    Summary:Isothermal crystallization of poly(3-hydroxybutylate) was observed by the temporal change of terahertz absorption spectra. The obtained spectra were analyzed by using two-dimensional correlation spectroscopy. Synchronous and asynchronous plots show the correlation of the absorption peaks and the order of the spectral change, which helps to understand the crystallization process. © 2011 IEEE.
  • Expanding World of Vibrational Spectroscopy: Advances Brought by Ultra-Short Pulse Laser Light , Yusuke Morisawa, Yukihiro Ozaki, Hiromichi Hoshina, 40, 8, 388, 401,   2011 08 , Refereed, 招待有り
  • Higher order conformation of Poly(3-hydroxybutyrate)s studied by terahertz time-domain spectroscopy, Hiromichi Hoshin, Yusuke Morisawa, Harumi Sato, Isao Noda, Yukihiro Ozaki, Chiko Otani, IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide,   2010 11 30 , 10.1109/ICIMW.2010.5612538, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649372294&origin=inward
    Summary:Terahertz absorption spectra of Poly(3-hydroxybutyrate)s were measured. The orientation of the transition dipole moment was investigated by the polarization spectra. The temperature dependence of the spectra reflects the change in the hydrogen bonding distance of the crystalline structure. © 2010 IEEE.
  • Correlation between Nuclear Spin Ratio of cyclic-C3H2 and Chemical Evolution in TMC-1 Core , Yusuke Morisawa, 55, 4, 239, 244,   2006 , Refereed, 招待有り, 10.5111/bunkou.55.239

Research Grants & Projects

  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(若手研究(B)), How does the hydrogen bonding give changes to valence electrons?, Yusuke MORISAWA, Effect of intermolecular interaction, such as hydrogen bonds and van der Waals forces to valence electrons were investigated by using an attenuated total reflection spectrometer in far-UV(ATR-FUV). After developing the ATR-FUV equipment for measurements in low temperature(~-70℃), ATR-FUV spectra of liquid acetone and, solid and liquid alkanes were observed. Comparing the results of electronic states in low-temperature liquids and high level quantum chemical calculations, we got a new insight about the effect of intermolecular interaction to valence electrons.