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Characterization of photoinduced isomerization and intersystem crossing of the cyanine dye Cy3
Jia, Ke; Wan, Yan; Xia, Andong; Li, Shayu; Gong, Fangbin; Yang, Guoqiang
刊名JOURNAL OF PHYSICAL CHEMISTRY A
2007-03-08
DOI10.1021/jp067843i
111期:9页:1593-1597
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]FLUORESCENCE CORRELATION SPECTROSCOPY ; SINGLE-MOLECULE SPECTROSCOPY ; RESONANCE ENERGY-TRANSFER ; ELECTRON-TRANSFER ; PHOTOPHYSICAL PROPERTIES ; THIACARBOCYANINE DYES ; BACK-ISOMERIZATION ; OXYGEN PRODUCTION ; MEROCYANINE DYES ; GLASS-SURFACE
英文摘要Several important photophysical properties of the cyanine dye Cy3 have been determined by laser flash photolysis. The triplet-state absorption and photoisomerization of Cy3 are distinguished by using the heavy-atom effects and oxygen-induced triplet -> triplet energy transfer. Furthermore, the triplet-state extinction coefficient and quantum yield of Cy3 are also measured via triplet-triplet energy-transfer method and comparative actinometry, respectively. It is found that the triplet -> triplet (T-1 -> T-n) absorptions of trans-Cy3 largely overlap the ground-state absorption of cis-Cy3. Unlike what occurred in Cy5, we have not observed the triplet-state T-1 -> T-n absorption of cis-Cy3 and the phosphorescence from triplet state of cis-Cy3 following a singlet excitation (S-0-S-1) of trans-Cy3, indicating the absence of a lowest cis-triplet state as an isomerization intermediate upon excitation in Cy3. The detailed spectra of Cy3 reported in this paper could help us interpret the complicated photophysics of cyanine dyes.
语种英语
WOS记录号WOS:000244530300004
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140735
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing 100080, Peoples R China
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Jia, Ke,Wan, Yan,Xia, Andong,et al. Characterization of photoinduced isomerization and intersystem crossing of the cyanine dye Cy3[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2007,111(9):1593-1597.
APA Jia, Ke,Wan, Yan,Xia, Andong,Li, Shayu,Gong, Fangbin,&Yang, Guoqiang.(2007).Characterization of photoinduced isomerization and intersystem crossing of the cyanine dye Cy3.JOURNAL OF PHYSICAL CHEMISTRY A,111(9),1593-1597.
MLA Jia, Ke,et al."Characterization of photoinduced isomerization and intersystem crossing of the cyanine dye Cy3".JOURNAL OF PHYSICAL CHEMISTRY A 111.9(2007):1593-1597.
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