TWISTED INTERNAL CHARGE-TRANSFER IN (AMINOPHENYL)PYRIDINIUM

被引：79

作者：

FROMHERZ, P

HEILEMANN, A

机构：

[1] Abteilung Biophysik, Universität Ulm

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 17期

关键词：

D O I：

10.1021/j100196a004

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 electron donor dimethylaniline and the electron acceptor methylpyridinium are coupled with a twistable bond as [(dimethylamino)phenyl]methylpyridinium and in the rigid frame of fluorene as (dimethylamino)methylazafluorenium. The fluorescence of both chromophores is studied. The quantum yield of the rigid dye is around 50%. The quantum yield of the twistable homolog is low. It drops to about 0.05% in solvents of high polarity and fluidity. The difference is assigned to the formation of a TICT state (twisted internal charge transfer) with efficient radiationless deactivation.

引用

页码：6864 / 6866

页数：3

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