Move to the content area
学習院大学研究者情報
研究者情報
Researcher Information
 
change language:

メニュー/MENU

Academic Staff search
Graduate School of HumanitiesProfessional School of LawFaculty of LawFaculty of EconomicsFaculty of LettersFaculty of ScienceFaculty　of　International　Social　SciencesCentre for Sports and Health SciencesComputer CentreForeign Language Teaching and Research CentreResearch Institute for Oriental CulturesUniversity Museum of HistoryGlobal Exchange Organisation for Research and Education
 
Academic Staff search 

理学部

Researcher List >> Koichi Iwata
 

Koichi Iwata

 
Avatar
NameKoichi Iwata
URLhttps://www-cc.gakushuin.ac.jp/~20040130/index.htm
AffiliationGakushuin University
SectionFaculty of Science, Department of Chemistry, Faculty of Science Department of Chemistry
Job titleProfessor
Degree(BLANK)(The University of Tokyo)
J-Global ID200901030161773730

Research Interests

 
ionic liquids ,Raman spectroscopy ,lipid bilayer membranes ,脂質二重膜 ,ラマン分光法 ,イオン液体 ,化学反応 ,時間分解分光法 ,chemical reaction ,time-resolved spectroscopy

Research Areas

 
  • Nanotechnology/Materials / Basic physical chemistry / 

Research History

 
 
   
 
Gakushuin University Faculty of Science, Department of Chemistry  Professor 
 

Awards

 
May 2018
日本分光学会賞
岩田耕一 
 
2000
分子科学奨励森野基金
 
1997
日本分光学会論文賞
 

Papers

1234>
 
 
Femtosecond Time-resolved Near-infrared Spectroscopy of Oligothiophenes and Polythiophene: Energy Location and Effective Conjugation Length of Their Low-lying Excited States
Shunnosuke Okino   Tomohisa Takaya   Koichi Iwata   
CHEMISTRY LETTERS   44(8) 1059-1061   Aug 2015   [Refereed]
The energies of low-lying singlet excited states of oligothiophenes, xT's (x = 3 to 8), and polythiophene are determined using femtosecond time-resolved near-infrared spectroscopy. The energies are linearly correlated with the reciprocal number of...
 
Rapid microstructure characterization of polymer thin films with 2D-array multifocus Raman microspectroscopy
Ashok Zachariah Samuel   Sohshi Yabumoto   Kenichi Kawamura   Koichi Iwata   
ANALYST   140(6) 1847-1851   2015   [Refereed]
Raman imaging is one of the very informative methods for the characterization of chemically and structurally heterogeneous materials without employing specific molecular labels. Multifocus Raman imaging is one of the fast-imaging alternatives to t...
 
Viscosity Heterogeneity inside Lipid Bilayers of Single-Component Phosphatidylcholine Liposomes Observed with Picosecond Time-Resolved Fluorescence Spectroscopy
Yuki Nojima   Koichi Iwata   
JOURNAL OF PHYSICAL CHEMISTRY B   118(29) 8631-8641   Jul 2014   [Refereed]
A number of biochemical reactions proceed inside biomembranes. Because the rate of a chemical reaction is influenced by chemical properties of the reaction field, it is important to examine the chemical properties inside the biomembranes, or lipid...
 
Relaxation Mechanism of beta-Carotene from S-2 (1B(u)(+)) State to Si (2A(g)(-)) State: Femtosecond Time-Resolved Near-IR Absorption and Stimulated Resonance Raman Studies in 900-1550 nm Region
Tomohisa Takaya   Koichi Iwata   
JOURNAL OF PHYSICAL CHEMISTRY A   118(23) 4071-4078   Jun 2014   [Refereed]
Carotenoids have two major low-lying excited states, the second lowest (S-2 (1B(u)(+))) and the lowest (S-1 (2A(g)(-))) excited singlet states, both of which are suggested to be involved in the energy transfer processes in light-harvesting complex...
 
Ultrafast bimolecular radical reaction between S1 p-terphenyl and carbon tetrachloride: mode-specific acceleration of vibrational dephasing in reactant molecule
Koichi Iwata   
JOURNAL OF RAMAN SPECTROSCOPY   39(11) 1512-1517   Nov 2008   [Refereed]
Ultrafast bimolecular radical reaction proceeds between photoexcited p-terphenyl and carbon tetrachloride. The lifetime of the first excited singlet (Si) state of p-terphenyl in carbon tetrachloride measured with picosecond time-resolved fluoresce...

Misc.

<12345
 
 
Femtosecond time-resolved absorption anisotropy spectroscopy on 9,9(')-bianthryl: Detection of partial intramolecular charge transfer in polar and nonpolar solvents
Tomohisa Takaya   Hiro-o Hamaguchi   Koichi Iwata   
JOURNAL OF CHEMICAL PHYSICS   130(1) 014501-1-014501-9   Jan 2009   
Femtosecond time-resolved absorption anisotropy spectroscopy by multichannel detection has been developed. The charge transfer (CT) character and dynamics of the UV-photoexcited 9,9(')-bianthryl (BA) in heptane, acetonitrile, and ethanol are revea...
 
Effects of pump and probe light field on picosecond time-resolved Raman spectra of S1 trans-stilbene. Disagreement between Stokes-and anti-Stokes scattering fregnencies
IWATA KOICHI   
Bulletin of the Chemical Society of Japan   75, 1075    2002   
 
Microsoopic Mechamism of the Solute-solvent Energy Dissipation Probed by Picosecond Time-rsolved Raman Spectroscopy
IWATA KOICHI   
Journal of Physical Chemistry, A   101 632   1997   
 
Construction of a Transform-limited Picosecond Time-resolved Raman Spectrometer
IWATA KOICHI   
Reniew of Scientific Instrnments   64 2140   1993   
 
CONSTRUCTION OF A VERSATILE MICROSECOND TIME-RESOLVED INFRARED SPECTROMETER
K IWATA   H HAMAGUCHI   
APPLIED SPECTROSCOPY   44(9) 1431-1437   Nov 1990   

Presentations

12345>
 
 
12th Trombay Symposium on Radiation and Photochemistry (TSRP-2014), IT-15, Bhabha Atomic Research Centre, Mumbai, India   2014   
 
The First Taiwan International Symposium on Raman Spectroscopy, IL-2, National Chiao Tung University, Hsinchu, Taiwan   2013   
 
Taiwan Association of Raman Spectroscopy Summer Camp, Hsinchu, Taiwan   2013   
 
Seventh International Conference on Advanced Vibrational Spectroscopy (ICAVS7), PL-4(Plenary Lecture), Kobe Convention Center, Kobe, Japan   2013   
 
2013 Korea - Japan Symposium on Frontier Photoscience (KJFP-2013), Invited Lecture 50, Hoam Faculty House, Seoul National University, Seoul , Korea   2013   

Professional Memberships

12>
 
 
   
 
イオン液体研究会
 
   
 
JAPAN SOCIETY FOR MOLECULAR SCIENCE
 
   
 
光化学協会
 
   
 
米国化学会
 
   
 
日本分光学会

Works

12>
 
 
2000
 
1998 - 1999
 
1997 - 1998
 
 

Research Projects