ICCAS OpenIR
The photophysical characteristics of 2-butylamino-2-demethoxy-hypocrellin B
Lee, HY; Zhou, ZX; Chen, S; Zhang, MH; Shen, T
2004-07-15
Source PublicationJOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
ISSN1010-6030
Volume165Issue:1-3Pages:3-9
Abstract2-Butylamino-2-demethoxy-hypocrellin B (BAHB), is an efficient photodynamic sensitizer, excited singlet-state energies are determined from the overlap of the normalized from absorption and emission spectra to be 176.4 kJ mol(-1) (ESCT) and 202.8 kJ mol(-1) (Es-1), respectively. The quantum yields of BAHB fluorescence are 0.0098 (phi(f1)) and 0.0076 (phi(f2)), respectively. The energies and quantum yields of excited triplet states of BARB are examined from the external effect of heavy atom on its florescence emission in the mixture of n-propyl iodide and benzene. The energies of excited triplet states of BAHB are 134.4 +/- 10.5 kJ mol(-1) (ETCT) and 158.6 +/- 10.5 kJ mol(-1) (ET1), respectively. The quantum yields of excited triplet states of BAHB are 0.73 +/- 0.04 (phiT(CT)) and 0.56 +/- 0.04 (phi(T1)), respectively. Meanwhile, the kinetic constants of fluorescence emission, intersystem crossing and internal conversion are also calculated from relative equations. (C) 2004 Elsevier B.V. All rights reserved.
Keyword2-butylamino-2-demethoxy-hypocrellin b External Heavy-atom Effect Singlet State Triplet State
DOI10.1016/j.jphotochem.2004.01.013
Indexed BySCI
Language英语
WOS IDWOS:000222693900002
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82470
Collection中国科学院化学研究所
Corresponding AuthorShen, T
Affiliation1.Chinese Acad Sci, Key Lab Photochem, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Inst Biophys, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Lee, HY,Zhou, ZX,Chen, S,et al. The photophysical characteristics of 2-butylamino-2-demethoxy-hypocrellin B[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,2004,165(1-3):3-9.
APA Lee, HY,Zhou, ZX,Chen, S,Zhang, MH,&Shen, T.(2004).The photophysical characteristics of 2-butylamino-2-demethoxy-hypocrellin B.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,165(1-3),3-9.
MLA Lee, HY,et al."The photophysical characteristics of 2-butylamino-2-demethoxy-hypocrellin B".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 165.1-3(2004):3-9.
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