Carotenoid radical cations and dications: EPR, optical, and electrochemical studies

被引：36
|
作者：
Kispert, LD [1 ]
Konovalova, T [1 ]
Gao, Y [1 ]
机构：
[1] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA
来源：
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS | 2004年 / 430卷 / 01期
关键词：
carotenoids; radical cations; dications; electron paramagnetic resonance; isomers; electron-nuclear double resonance; electrochemical; optical; electron transfer;
D O I：
10.1016/j.abb.2004.03.036
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Investigations of the structure and properties of paramagnetic carotenoid radical cations and diamagnetic carotenoid dications using electron paramagnetic resonance (EPR) and electron-nuclear double resonance (ENDOR) spectroscopy in conjunction with electrochemical, optical, and HPLC measurements, and molecular orbital calculations are described. These methods were applied to determine how the carotenoid radical cations and dications can be formed, their electron-transfer properties and stability in various media, and the mechanism by which carotenoid radical cations can isomerize. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：49 / 60
页数：12
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