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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
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
2007-03-08
DOI10.1021/jp067843i
Volume111Issue:9Pages:1593-1597
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordFLUORESCENCE CORRELATION SPECTROSCOPY ; SINGLE-MOLECULE SPECTROSCOPY ; RESONANCE ENERGY-TRANSFER ; ELECTRON-TRANSFER ; PHOTOPHYSICAL PROPERTIES ; THIACARBOCYANINE DYES ; BACK-ISOMERIZATION ; OXYGEN PRODUCTION ; MEROCYANINE DYES ; GLASS-SURFACE
AbstractSeveral 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.
Language英语
WOS IDWOS:000244530300004
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140735
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
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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