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...
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...
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...
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...
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...
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...
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...
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...
2013 Korea - Japan Symposium on Frontier Photoscience (KJFP-2013), Invited Lecture 50, Hoam Faculty House, Seoul National University, Seoul , Korea 2013