Photophysical study of two carbostyril dyes: Investigation of the possible role of a rotary decay mechanism

被引：22

作者：

Saroja, G ^{[1
]}

Sankaran, NB ^{[1
]}

Samanta, A ^{[1
]}

机构：

[1] UNIV HYDERABAD,SCH CHEM,HYDERABAD 500046,ANDHRA PRADESH,INDIA

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 249卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(95)01407-1

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 photophysical behaviour of two carbostyrils used as layer dyes has been investigated. From a study of the solvent polarity dependence of the fluorescence properties we have shown that twisting of the amino or dimethylamino group does not affect the photophysical behaviour of carbostyrils. The results of AM1 calculations clearly show unfavourable energetics for the rotary decay process in carbostyrils. The keto form, of the carbostyrils is shown to be the only absorbing and emitting species. In light of the present results, a reinvestigation of the fluorescence properties of structurally similar coumarins seems to be necessary.

引用

页码：392 / 398

页数：7

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