KINDAI UNIVERSITY


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MORISAWA Yusuke

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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
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Last Updated :2020/04/01

Education and Career

Education

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

Academic & Professional Experience

  •   2016 04 ,  - 現在, Associate Professor, School of Science and engineering, Kindai University
  •   2012 04 ,  - 2016 03 , Lecturer, School of Science and engineering, Kinki University
  •   2008 04 ,  - 2012 03 , Postdoctoral fellow, School of Science and Technology, Kwansei Gakuin University

Research Activities

Research Areas

  • Nanotechnology/Materials, Basic physical chemistry
  • Nanotechnology/Materials, Analytical chemistry
  • Nanotechnology/Materials, Crystal engineering
  • Nanotechnology/Materials, Applied materials

Research Interests

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

Published Papers

  • Surface Structural Transformation of Pre-Carbonized Solid Biomass from Japanese Cedar via ATR-FTIR and PCA., Cherdkeattikul S, Morisawa Y, Ida T, Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, Dec. 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, CHINESE JOURNAL OF CHEMICAL PHYSICS, 32(2), 175 - 181, May 2019 , Refereed
  • Bi2Ne: Weakly bound cluster of diatomic bismuth with neon, A. Endo, M. Hatanaka, N. Ueno, Y. Morisawa, T. Wakabayashi, Fizika Nizkikh Temperatur, Fizika Nizkikh Temperatur, 45, 807 - 815, Jan. 2019
    Summary:© 2019 Institute for Low Temperature Physics and Engineering. All rights reserved. The A-X transition of diatomic bismuth, Bi2, was revisited by laser induced fluorescence in solid Ne at 3 K. Molecular constants, i.e., vibrational frequencies of 137 cm-1 and 174 cm-1, were reproduced for the upper and lower electronic states as reported by Bondybey et al. [Chem. Phys. Lett. 76, 30 (1980)]. Two-dimensional mapping of emission spectra confirmed satellite bands in higher and lower excitation/emission energies for each of the major bands in the vibrational progression of v′-v″ (v′ = 0.5, v″ = 5-12). Based on the molecular orbital cal-culations, presence of clusters, Bi2Nen (n = 1-6), is proposed for possible carriers of the observed satellites. For the relatively large matrix shift of ∼ 67 cm-1 in solid Ne for the term energy of the A state, the diatomic bismuthis supposed to exist as a linearly coordinated cluster of Bi2Ne in the matrix.
  • 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 d(9) in n-hexane studied by visible/near-infrared/infrared spectroscopy, Yusuke Morisawa, Arisa Suga, SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 197, 121 - 125, May 2018 , Refereed
    Summary:Visible (Vis), near-infrared (NIR) and IR spectra in the 15,600-2500 cm(-1) region were measured for methanol, methanol-d(3), and t-butanol-d(9) in n-hexane to investigate effects of intermolecular interaction on absorption intensities of the fundamental and the first, second, and third overtones of their OH stretching vibrations. The relative area intensities of OH stretching bands of free and hydrogen-bonded species were plotted versus the vibrational quantum number using logarithm plots (V = 1-4) for 0.5 M methanol, 0.5 M methanol d(3), and 0.5 M t-butanol-d(9) in n-hexane. In the logarithm plots the relative intensities of free species yield a linear dependence irrespective of the solutes while those of hydrogen-bonded species deviate significantly from the linearity. The observed results suggest that the modifications in dipole moment functions of the OH bond induced by the formation of the hydrogen bondings change transient dipole moment, leading to the deviations of the dependences of relative absorption intensities on the vibrational quantum number from the linearity. (C) 2017 Elsevier B.V. All rights reserved.
  • 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, APPLIED SPECTROSCOPY, 71(7), 1530 - 1536, Jul. 2017 , Refereed
    Summary:Attenuated total reflection (ATR) spectra, which are often used in IR analysis, can be transformed into extinction and refraction spectra by Kramers-Kronig transformation (KKT) with Fresnel equations. However, it is often difficult to obtain correct optical indices due to the inherent instrumental functions. This paper proposes a simple practical method for correction of KKT with two parameters, which include all the effects of the instrumental function. In order to obtain the parameters of the instrumental function, absorption ratios of charge transfer to solvent (CTTS) transitions of aqueous iodide ions observed at 195 nm and 230 nm were used as a standard. The absorption indices calculated from the ATR spectra with the parameters correspond reasonably well to those given by the transmittance spectra not only in the UV region but also in the far-ultraviolet (FUV, 120-200 nm) region. By applying the corrected KKT to the ATR-FUV spectra of aqueous potassium halide solutions in the range of 0-2 M, correct features of the absorption spectra of KCl and KBr, whose CTTS bands are thought to be observed in FUV region, were confirmed. It is possible to use the parameters representing the instrument function as long as the instrument is not changed.
  • New Application of Far-ultraviolet Spectroscopy, Ichiro Tanabe, Takeyoshi Goto, Yusuke Morisawa, Yukihiro Ozaki, BUNSEKI KAGAKU, BUNSEKI KAGAKU, 66(5), 319 - 331, May 2017 , Refereed
    Summary:Recently, spectroscopy and photonics in the far-ultraviolet (FUV) region (120 - 200 nm region) have been a matter of great attention because of rapid development of sensitive instruments in this region and an increase in the possible applications. In the present work the state-of-the-art of progress in FUV spectroscopy of the liquids and solids, which are concerned with various valence electronic transitions including sigma, n, and pi electrons, were outlined. FUV spectroscopy is rich in information about the electronic structure and transitions of a molecule, but the absorptivity is very high for liquid and solid states in the FUV region. Thus, spectral measurements for condensed matter in this region were difficult. To overcome this difficulty we introduced an attenuated total reflection (ATR) technique to the FUV region. ATR-FUV spectroscopy has paved a new avenue for condensed-matter FUV spectroscopy. This article demonstrates that FUV holds considerable promise in various fields of research from basic science, such as studies of electronic structure of molecules and those of hydrogen bonding, hydration, and adsorption of water, to material researche, such as polymers, inorganic semiconductors, and ionic liquids.
  • 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, Yukihiro Ozaki, ACS OMEGA, ACS OMEGA, 2(2), 618 - 625, Feb. 2017 , Refereed
    Summary:Intermolecular interactions between alkyl chains such as CH center dot center dot center dot 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 (T-m = 5.9 degrees C), through both cooling and heating, from 15 to -38 degrees C, to determine its temperature dependency. The chosen temperature range, with the minimum temperature much lower than the melting point of n-tetradecane, allowed for a detailed examination of the liquid- solid phase transition. 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. Because the observed variations in the band intensities are reversible during both cooling and heating processes and the conversion from the 153 nm band to 200 and 230 nm bands takes place at the melting temperature, we concluded that these spectral changes are caused by changes in the electronic states because of the phase change. To understand the origin of this drastic change observed experimentally, we carried out time-dependent density functional theory calculations using a model dimer structure of n-pentane and periodic density functional theory calculations of the polyethylene crystal structure. Although the simulated absorption spectra of both the optimized and crystal structures did not explain the changes observed experimentally in the absorption spectra, compressed structures were found to be a potential explanation for the experimental findings. These results suggest that an unusually compressed structure might be generated on the surface at low temperatures, and this phase change, which is reversible, is responsible for the unusual absorption observed in the attenuated total reflection-far ultraviolet spectra.
  • Analysis of Electronic Transition of Aqueous Solutions Studied by Far-ultraviolet Spectroscopy, Takeyoshi Goto, Akifumi Ikehata, Yusuke Morisawa, Noboru Higashi, Yukihiro Ozaki, BUNSEKI KAGAKU, BUNSEKI KAGAKU, 64(3), 173 - 184, Mar. 2015 , Refereed
    Summary:Far-ultraviolet (FUV, <200 nm) absorption spectroscopy provides molecular information about the electronic ground state and the excited state. Because photon energy of FUV light corresponds to various kinds of valence electronic transitions including sigma, n, and pi electron excitation and charge transfer (CT), almost all chemical compounds show characteristic FUV spectra. However, FUV spectral measurements of liquid samples are highly challenging, because the absorptivity of most liquids is very intense. We have developed an attenuated total reflection FUV spectrophotometer in order to measure the FUV spectra of liquid water and aqueous solutions. This paper introduces the FUV spectra (140-300 nm) of various aqueous solutions to describe (1) how the first electronic transition (<(A)over tilde> <- (X) over tilde )bands of water molecules in Group I, II, XIII, and lanthanoid (Ln(3+)) electrolyte solutions are associated with the hydration states of those metal cations, (2) how the protonation states of amino acids in aqueous solutions affect the electronic transition of the amino acids, and (3) the analysis of O-3 photolytic reaction in aqueous solution using a nano-sec pump-probe transient FUV spectrophotometer.
  • Rydberg and pi-pi* 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 Bondings, Yusuke Morisawa, Manaka Yasunaga, Harumi Sato, Ryoichi Fukuda, Masahiro Ehara, Yukihiro Ozaki, JOURNAL OF PHYSICAL CHEMISTRY B, JOURNAL OF PHYSICAL CHEMISTRY B, 118(40), 11855 - 11861, Oct. 2014 , Refereed
    Summary:Attenuated total reflection far ultraviolet (ATR-FUV) spectra in the 145-260 nm region were measured for surfaces (thickness 50-200 nm) of various kinds of nylons in cast films to explore their electronic transitions in the FUV region. ATR-FUV spectra show two major bands near 150 and 200 nm in the surface condensed phase of nylons. Transmittance (Tr) spectra were also observed in particular for the analysis of valence excitations. Time-dependent density functional theory (TD-DFT/CAM-B3LYP) calculations were carried out using the model systems to provide the definitive assignments of their absorption spectra and to elucidate their peak shifts in several nylons, in particular, focusing on their crystal alignment structures and intermolecular hydrogen bondings. Two major bands of nylon films near 150 and 200 nm are characterized as sigma-Rydberg 3p and pi-pi* transitions are relatively localized at the amide group. Differences in the peak positions and intensity were found in both ATR and Tr FUV Spectra for different nylons. A red-shift of the pi-pi* amide band in the FUV spectra of nylon-6 and nylon-6/6 models in alpha form is attributed to the crystal structure pattern and the intermolecular hydrogen bondings, which result in the different delocalization character of the pi-pi* transitions and transition dipole coupling.
  • 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, JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 122(1425), 322 - 328, May 2014 , Refereed
    Summary:The physical and optical properties of newly synthesized, environmentally friendly, highly reflective green-black (HRGB) pigments (CoO)(x)(MgO)(1-x)center dot n{(Al2O3)(y)(Fe2O3)(1-y)} (x = 0.5, y = 0.75, and n = 1) calcined at various temperatures were studied. The pigments were prepared from Fe2O3, Al(OH)(3), Mg(OH)(2), and CoCO3 by a novel modified solid solution method. The synthesis was performed at a reduced calcination temperature with lower energy consumption than the standard methods. The physical and optical properties (lower magnetization and higher total solar reflectance) of the HRGB pigments were superior to those of related pigments with the same chemical structure. Dependence of physical and spectroscopic properties of the HRGB pigments on the calcination temperature was also studied. Mixed with TiO2, a highly reflective black pigment, synthesized similarly to the HRGB pigment and possessing similar physical properties, exhibited 80% higher reflectivity than a standard black pigment similarly mixed with TiO2. (C)2014 The Ceramic Society of Japan. All rights reserved.
  • 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, Miroslaw A. Czarnecki, Hai-Shui Wang, Yukihiro Ozaki, JOURNAL OF PHYSICAL CHEMISTRY A, JOURNAL OF PHYSICAL CHEMISTRY A, 118(14), 2576 - 2583, Apr. 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 fundamental to the first overtone of the C=O stretching vibration is around 50, which is significantly larger than those of the O-H, C H, and S H stretching vibration. Both the calculated and experimental results suggest that excessive weakness in the C=O stretching overtone was shown to be a result of both a low anharmonicity and a substantial reduction in the oscillator strength. These results provide new insight into our understanding of the C=O stretching vibration.
  • 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 Miura, Yukihiro Ozaki, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 16(37), 20236 - 20240, 2014 , Refereed
    Summary:We develop a bulk silver tip for tip-enhanced Raman scattering (TERS) and obtain TERS spectra of epitaxial graphene on the carbon face of 4H-SiC(000-1) with a high signal-to-noise ratio. Thanks to the high quality of TERS spectra we firstly find that the G band in the TERS spectra exhibits position-by-position variations in both lower wavenumber shifts and spectral broadening. The analysis of the variations reveals that the shifts and broadenings have a linear correlation between each other, indicating that the variations are induced by the position dependent local stress on graphene based on a uniaxial strain model.
  • Elucidating Electronic Transitions from sigma Orbitals of Liquid n- and Branched Alkanes by Far-Ultraviolet Spectroscopy and Quantum Chemical Calculations, Yusuke Morisawa, Shin Tachibana, Masahiro Ehara, Yukihiro Ozaki, JOURNAL OF PHYSICAL CHEMISTRY A, JOURNAL OF PHYSICAL CHEMISTRY A, 116(48), 11957 - 11964, Dec. 2012 , Refereed
    Summary:Attenuated total reflection far-ultraviolet (ATR-FUV) spectra containing Rydberg states of n-alkanes (CmH2m+2; m varies in the range 5-9) and branched alkanes observed in the liquid phase were investigated by quantum chemical calculations with the aim of elucidating electronic transitions from sigma orbitals of liquid n- and branched alkanes. New assignments are proposed based on the time-dependent density functional theory (TD-DFT) and symmetry-adapted cluster configuration interaction (SAC-CI) calculations, and the differences in these spectra are analyzed in detail. The FUV spectra of n-alkanes show a broad asymmetric feature near 8.3 eV. The strong band at similar to 8.3 eV shows a red shift with a significant increase in intensity as the carbon chain length increases, which is attributed to the overlapping transitions from the third (or fourth) highest occupied molecular orbitals HOMO-2 (or HOMO-3) and HOMO-1 to Rydberg 3p(y) by the TD-DFT and SAC-CI calculations. This band was previously assigned to the overlap of two peaks arising from the transition from the HOMO to 3p and from the HOMO-1 to 3s based on their term values. Although the most intense transition, T1, is from HOMO-2 for m = 5 and 6 and HOMO-3 for m varying in the range of 7-9, the shape of Kohn Sham molecular orbital for T1 is similar among the all-alkanes investigated. The theoretical result also has demonstrated that the red shift originates in both stabilization of the Rydberg 3p(y) and destabilization of the occupied orbitals. The intensity of the shoulder at 7.7 eV drastically increases in the spectra of the branched alkanes, especially for those with quaternary carbon atoms such as 2,2-dimethyl butane. This increase in intensity is caused by a reduction in symmetry in the branched alkanes, which leads the forbidden transitions to Rydberg 3s to allowed transitions, In this way, the present study has provided new insight into the existence of their Rydberg transitions and the shape of the relevant MOs of the transitions.
  • 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, Akifumi Ikehata, Noboru Higashi, Yukihiro Ozaki, BUNSEKI KAGAKU, BUNSEKI KAGAKU, 61(7), 591 - 603, Jul. 2012 , Refereed
    Summary:Spectroscopic studies in the far-UV (FUV) region (120-200 nm) are very attractive for both basic sciences and applications, since various kinds of electronic transitions are observed in the region. However, because of very large absorption coefficients, full-scale FUV spectra for liquids and solids could not be measured easily. We have recently developed a totally new FUV spectrometer based on attenuated total reflection (ATR) that enables us to measure the full-scale spectra of liquid and solid samples in the 140-200 nm region. In this paper, at first we outline the characteristics and advantages of the FUV spectroscopy, and then discuss our studies on the development of an ATR-FUV spectrometer and its applications to analytical chemistry. At the end, we introduce our newly developing time-resolved ATR-FUV spectrometer.
  • Spectroscopic characterization of a series of polyyne-iodine molecular complexes H(C C)(n)H(I-6) of n=5-9, Yoriko Wada, Yusuke Morisawa, Tomonari Wakabayashi, CHEMICAL PHYSICS LETTERS, CHEMICAL PHYSICS LETTERS, 541, 54 - 59, Jul. 2012 , Refereed
    Summary:A series of molecular complexes, C2nH2I6 (n = 5-9), formed from size-selected hydrogen-end-capped polyyne, H(C C)(n)H, and iodine molecules was characterized by UV-vis and IR absorption spectroscopy for elucidating location and geometry of iodine atoms in the complex. The IR lines for the CH-stretching sigma(u) fundamental at 3305 cm (1) and CH-bending pi(u) fundamental at 625 cm (1) for C2nH2 (n = 5-7) in CCl4 were red-shifted by 220 and 15 cm (1), respectively, for its complex of C2nH2I6. A few lines were intensified in the low-frequency region of 850-1450 cm (1) for CC-stretching sigma(u) modes of polyynes in the complex. (C) 2012 Elsevier B. V. All rights reserved.
  • Attenuated total reflectance-far ultraviolet (ATR-FUV) spectra of CH3OH, CH3OD, CD3OH and CD3OD in a liquid phase similar to Rydberg states similar to, Yusuke Morisawa, Akifumi Ikehata, Noboru Higashi, Yukihiro Ozaki, CHEMICAL PHYSICS LETTERS, CHEMICAL PHYSICS LETTERS, 476(4-6), 205 - 208, Jul. 2009 , Refereed
    Summary:Absorption bands near 155 nm due to electronic transitions of CH3OH, CH3OD, CD3OH and CD3OD in a liquid phase were observed by using a uniquely designed attenuated total reflectance-far ultraviolet (ATR-FUV) spectrometer. Their transmittance spectra were also measured for the absorption tail region of 190-220 nm. Isotope effects were found in the peak maxima and tail structures of these bands. The ATR-FUV and transmittance spectra reveal that the lowest electronic states of CH3OH and the deuterated species in the liquid phase shift to higher energy from those in the gas phase. (C) 2009 Elsevier B. V. All rights reserved.
  • 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, 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, 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, 分担執筆, Sec. 4, Wiley-VHC,   2019 09 , 9783527344611
  • Frontiers and Advances in Molecular Spectroscopy (Ed. Jaan Laane), Yusuke Morisawa, Ichiro Tanabe, Yukihiro Ozaki, 分担執筆, 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, Yukihiro Ozaki, Satoshi Kawata, 分担執筆, 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
  • 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
  • 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 electronic state of polyethylene glycol using attenuated total reflectant spectrosopy in far ultraviolet, Nami Ueno, Yusuke Morisawa, Pacifichem 2015,   2015 12 17
  • 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 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
  • Far UV absorption spectroscopy of linear polyyne molecules in solutions, Yoriko Wada, Usuke Morisawa, Tomonari Wakabayashi, Yukihiro Ozaki, Pacifichem 2015,   2015 12 16
  • 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)
  • 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)
  • 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)
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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, 会議名(英語),   2014 03 , 主催者(英語)
    Summary:概要(英語)
  • タイトル(英語), 講演者, morisawayusuke,   2014 03
  • 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
  • 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
  • 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
  • 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)
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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)
  • 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
  • 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, 田晶文, 東昇, 尾崎幸洋, Encyclopedia of Analytical Chemistry,   2013 03
    Summary:DOI: 10.1002/9780470027318.a9287
  • 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
  • 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
  • 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
  • Study of electronic state of polyethylene on surface by using attenuated total ref1ection in far-UV region,   2012 11
  • Two-Dimensional Correlation Spectroscopy of Polymer in Terahertz Frequency Region, FACSS presents SciX 2012,   2012 10 , FACSS presents SciX 2012
    Summary:oral presentation (370)
  • 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)
  • Far-Ultraviolet Spectroscopy in the Solid and Liquid States, FACSS presents SciX 2012,   2012 10 , FACSS presents SciX 2012
    Summary:Oral Presentation (671)
  • 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)
  • 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
  • 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.
  • 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)
  • Near Infrared Spectroscopy,   2012 06
  • Terahertz Vibrational Spectroscopy of Polymers with Hydrogen Bonds, European Optical Society,   2012 06 , European Optical Society
  • 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
  • Relation between Surface Structure of Polyethylene and its Far-UV Spectra by using Attenuated Total Reflection Spectroscopy,   2012 05
  • Study of Photo-dissociation of Phenol and Tryptophan by using Time-Resolved Attenuated Total Reflection Spectroscopy for Far-UV region,   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
  • 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
  • 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
  • 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

  • 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, https://www.kagakudojin.co.jp/book/b280861.html
  • 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
  • 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.
  • 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
  • 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?, 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.