ICCAS OpenIR
Effect of structural modification on photodynamic activity of hypocrellins
Ma, JH; Zhao, JQ; Jiang, LJ
2001-08-01
Source PublicationPHOTOCHEMISTRY AND PHOTOBIOLOGY
ISSN0031-8655
Volume74Issue:2Pages:143-148
AbstractAluminum ion complexed 5,8-di-Br-hypocrellin B is a new water-soluble perylenequinonoid derivative with enhanced absorption over hypocrellin B (HB) in the phototherapeutic window (600-900 nm). Electron paramagnetic resonance and 9,10-diphenyl-anthracene bleaching methods were used to investigate the photosensitizing activity of [Al-2(5,8-di-Br-HB)Cl-4], in the presence of oxygen. Singlet oxygen, superoxide anion radical and hydroxyl radical can be generated by [Al-2(5,8-di-Br-HB)Cl-4](n) photosensitization. Singlet oxygen (O-1(2)) is formed via energy transfer from triplet-state [Al-2(5,8-di-Br-HB)Cl-4](n), to ground-state molecular oxygen. O-1(2) participates in the generation of a portion of superoxide anion radical (O-2(.-)). Besides superoxide anion radical (O-2(.-)) may originate from the electron transfer between the triplet-state [Al-2(5,8-di-Br-HB)Cl-4](n) and the ground-state molecular oxygen. (OH)-O-. is formed through the Fenton-Haber-Weiss reaction and the decomposition of DMPO-O-1(2) adduct. Compared with HB [Al-2(5,8-di-Br-HB)Cl-4](n) primarily remains and enhances the generation efficiency of superoxide anion radical and hydroxyl radical but that of singlet oxygen decreases.
Indexed BySCI
Language英语
WOS IDWOS:000170619600005
PublisherAMER SOC PHOTOBIOLOGY
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76632
Collection中国科学院化学研究所
Corresponding AuthorZhao, JQ
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Ma, JH,Zhao, JQ,Jiang, LJ. Effect of structural modification on photodynamic activity of hypocrellins[J]. PHOTOCHEMISTRY AND PHOTOBIOLOGY,2001,74(2):143-148.
APA Ma, JH,Zhao, JQ,&Jiang, LJ.(2001).Effect of structural modification on photodynamic activity of hypocrellins.PHOTOCHEMISTRY AND PHOTOBIOLOGY,74(2),143-148.
MLA Ma, JH,et al."Effect of structural modification on photodynamic activity of hypocrellins".PHOTOCHEMISTRY AND PHOTOBIOLOGY 74.2(2001):143-148.
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