GENERATION AND SPECTROSCOPIC CHARACTERIZATION OF 2 PERSISTENT RADICAL CATIONS FROM BIS[4-(DIMETHYLAMINO)PHENYL]SQUARAINE

被引:5
作者
EBERSON, L
机构
[1] Chemical Center, Lund University, S-221 00 Lund
关键词
D O I
10.1021/j100054a007
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The squaraine dye bis[4-(dimethylamino)phenyl]squaraine gives a persistent radical cation upon one-electron oxidation in dichloromethane. In the presence of trifluoroacetic acid in high concentration (0.5-1.0 M), a second persistent radical cation is detectable upon oxidation, most likely formed by one-electron loss from a dye species protonated on one oxygen and one nitrogen. Both species were characterized by their UV-vis and EPR spectral properties.
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页码:752 / 756
页数:5
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