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理学部

Researcher List >> Koichi Iwata
 

Koichi Iwata

 
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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

 
 
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...
 
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...
 
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...
 
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...
 
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.

 
 
Fengniu Lu   Naoki Kitamura   Tomohisa Takaya   Koichi Iwata   Takashi Nakanishi   Yuki Kurashige   
PHYSICAL CHEMISTRY CHEMICAL PHYSICS   20(5) 3258-3264   Feb 2018   
We investigated the fluorescence properties of dialkoxyphenyl-pyrene molecules experimentally as well as theoretically. Our experiments confirmed fluorescence solvatochromism in 2,5-dimethoxyphenylpyrene and, in contrast there was no significant s...
 
Ryo Ohtani   Tsukasa Tokita   Tomohisa Takaya   Koichi Iwata   Masanao Kinoshita   Nobuaki Matsumori   Masaaki Nakamura   Leonard F. Lindoy   Shinya Hayami   
CHEMICAL COMMUNICATIONS   53(99) 13249-13252   Dec 2017   
A morphology transformation of hybrid liposomes was shown to occur from spherical vesicles to tubular micelles when increasing the ratio of the metal complex lipid present. Phase transition temperatures increased while viscosities decreased, indic...
 
Nidhi Dwivedi   Sumit K. Panja   Abhineet Verma   Tomohisa Takaya   Koichi Iwata   Sailaja S. Sunkari   Satyen Saha   
JOURNAL OF LUMINESCENCE   192 156-165   Dec 2017   
Two series of new 3d-4f heterodinuclear [Zn(II)Ln(III)] Schiff base complexes of general formula [Zn(mu-L1)(mu-CH3COO)Ln(NO3)(2)(S)] [Ln = Pr (1), Nd (2), Sm (3), Gd (4); S = MeOH; H(2)L1 = N,N-bis(3-methoxysalicylidene)-1,4-diaminobutane] and [Zn...
 
Fengniu Lu   Tomohisa Takaya   Koichi Iwata   Izuru Kawamura   Akinori Saeki   Masashi Ishii   Kazuhiko Nagura   Takashi Nakanishi   
SCIENTIFIC REPORTS   7    Jun 2017   
Solvent-free, nonvolatile, room-temperature alkylated-pi functional molecular liquids (FMLs) are rapidly emerging as a new generation of fluid matter. However, precision design to tune their physicochemical properties remains a serious challenge b...
 
Tomohisa Takaya   Koichi Iwata   
ANALYST   141(14) 4283-4292   2016   
Charge transfer and charge delocalisation processes play key roles in the functions of large biomolecular systems and organic/inorganic devices. Many of the short-lived transients involved in these processes can be sensitively detected by monitori...

Presentations

 
 
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

 
 
   
 
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