ICCAS OpenIR
Characterization of photoinduced isomerization and intersystem crossing of the cyanine dye Cy3
Jia, Ke; Wan, Yan; Xia, Andong; Li, Shayu; Gong, Fangbin; Yang, Guoqiang
2007-03-08
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
ISSN1089-5639
Volume111Issue:9Pages:1593-1597
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.
DOI10.1021/jp067843i
Indexed BySCI
Language英语
WOS IDWOS:000244530300004
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/62824
Collection中国科学院化学研究所
Corresponding AuthorXia, Andong
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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