SOLVENT-INDUCED EXCITED-STATE QUENCHING IN A CHROMOPHORE QUENCHER COMPLEX

被引:47
作者
PERKINS, TA
HUMER, W
NETZEL, TL
SCHANZE, KS
机构
[1] UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611
[2] AMOCO TECHNOL CORP,NAPERVILLE,IL 60566
关键词
D O I
10.1021/j100369a005
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 emission properties, electrochemical potentials, and picosecond transient absorption spectra of the chromophore-quencher complex, [(bpy)Re1(CO)3DMABN]+ (where bpy = 2,2′-bipyridine and DMABN = 4-(dimethylamino)benzonitrile) were studied in CH2Cl2, CH3CN, and in mixtures of the two solvents. Strong dπ(Re) → π*(bpy) MLCT emission is observed in CH2Cl2, but not in CH3CN. The MLCT quenching process is attributed to the presence of a ligand-to-ligand charge-transfer state in the excited-state manifold. © 1990 American Chemical Society.
引用
收藏
页码:2229 / 2232
页数:4
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