ICCAS OpenIR
Effect of solvents on the barrierless reaction in the excited state of cyanine dye
Feng, JA; Xiang, JF; Zhang, HJ; Ai, XC; Zhang, JP; Zhang, XK; Xu, GZ
2003-03-01
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume48Issue:6Pages:526-530
AbstractUV-Vis, fluorescence spectroscopy and time resolved spectroscopic technique on picosecond and femtosecond scales have been utilized to investigate the effect of steric hindrance and multiple hydroxyl groups of solvents on the barrierless isomerization in excited state of 3, 3'-di(3-sulfopropyl)thiacyanine triethylaminium salt. The results show that the factors mentioned above may be responsible for a different "short-time behavior" of the bleaching signal on the ground state and nonlinear viscosity dependence of the excited-state lifetime in isopropanol and glycol. These phenomena are distinguished from the situation reported in the long-chained monohydroxyl alcohol solvents. However, the dye molecule still exhibits the analyzing-wavelength dependence of the observed fluorescence lifetime, that is, the fluorescence lifetime increases with the increasing of analyzing-wavelength. The conclusions are in agreement with those drawn from femtosecond upconversion fluorescence experiments and further exemplify the barrierless isomerization model in the excited state.
KeywordPicosecond Time-resolved Fluorescence Spectroscopy Femtosecond Transient Absorption Technique Barrierless Isomerization
Indexed BySCI
Language英语
WOS IDWOS:000182036500005
PublisherSCIENCE CHINA PRESS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81248
Collection中国科学院化学研究所
Corresponding AuthorFeng, JA
Affiliation1.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Feng, JA,Xiang, JF,Zhang, HJ,et al. Effect of solvents on the barrierless reaction in the excited state of cyanine dye[J]. CHINESE SCIENCE BULLETIN,2003,48(6):526-530.
APA Feng, JA.,Xiang, JF.,Zhang, HJ.,Ai, XC.,Zhang, JP.,...&Xu, GZ.(2003).Effect of solvents on the barrierless reaction in the excited state of cyanine dye.CHINESE SCIENCE BULLETIN,48(6),526-530.
MLA Feng, JA,et al."Effect of solvents on the barrierless reaction in the excited state of cyanine dye".CHINESE SCIENCE BULLETIN 48.6(2003):526-530.
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