Spectroscopic Characterizations of Semiquinone Anion Radical Formation and Autosensitized Photooxidation for Elsinochrome A | |
Department | 非现建制 |
Lao, Wenjian1; Li, Cong2; Tai, Hong3; You, Jinmao4 | |
2015 | |
Source Publication | Journal- Chemical Society of Pakistan |
ISSN | 0253-5106 |
Volume | 37Issue:1Pages:99-104 |
Abstract | Elsinochrome A (EA) is a natural perylenequinone known for high photosensitization activity. There are a limited number of studies on its photophysical and photosensitive properties. In this study, formation of semiquinone anion radical and EA autosensitized photooxidation reactions were examined. Rate constant of semiquinone anion radical formation under anaerobic condition, and rate constant of autosensitized photooxidation reaction under aerobic condition were measured for Elsinochrome A (EA) by electron paramagnetic resonance and UV-visible spectra, respectively. The rate constant of formation was estimated at 0.767 min(-1) (R-2 = 0.963) using the zero-order reaction equation. The autosensitized photooxidation reaction occurred only when irradiation and oxygen co-existed in the EA solution. The average reaction rate constant was 3.22 +/- 0.36 (x10(-9), mol.s(-1)), and EA half-life was 4.48 +/- 0.52 (h) in the tetrachloromethane solution. |
Keyword | Elsinochrome a Epr Spectra Semiquinone Anion Radical Autosensitized Photooxidation |
Funding Organization | the Director Foundation of Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences |
Indexed By | SCI |
If | 0.276 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/18571 |
Collection | 非现建制 |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China 2.Yunnan Univ, Sch Chem Sci & Technol, Kunming 650091, Peoples R China 3.Johns Hopkins Sch Med, Dept Pathol, Baltimore, MD 21205 USA 4.Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Shandong, Peoples R China |
Recommended Citation GB/T 7714 | Lao, Wenjian,Li, Cong,Tai, Hong,et al. Spectroscopic Characterizations of Semiquinone Anion Radical Formation and Autosensitized Photooxidation for Elsinochrome A[J]. Journal- Chemical Society of Pakistan,2015,37(1):99-104. |
APA | Lao, Wenjian,Li, Cong,Tai, Hong,&You, Jinmao.(2015).Spectroscopic Characterizations of Semiquinone Anion Radical Formation and Autosensitized Photooxidation for Elsinochrome A.Journal- Chemical Society of Pakistan,37(1),99-104. |
MLA | Lao, Wenjian,et al."Spectroscopic Characterizations of Semiquinone Anion Radical Formation and Autosensitized Photooxidation for Elsinochrome A".Journal- Chemical Society of Pakistan 37.1(2015):99-104. |
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