ENHANCEMENT OF LUMINESCENCE OF COLLOIDAL CDS IN THE PRESENCE OF INDOLES - STUDY OF CDS-SENSITIZED REACTIONS OF INDOLE

被引：21

作者：

KUMAR, A

KUMAR, S

机构：

[1] Department of Chemistry, University of Roorkee, Roorkee

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1994年 / 83卷 / 03期

关键词：

D O I：

10.1016/1010-6030(94)03828-7

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 presence of indole causes an increase in the green photoluminescence of colloidal CdS and simultaneously quenches its 660 nm emission. The enhancement of luminescence can be explained by the formation of a transitory charge transfer (CT) complex between the excited CdS and the adsorbed indole. The CdS-sensitized oxidation of indole results in the formation of indigo. The first monolayer of indole leads to the observed photophysical effects but does not contribute to the formation of indigo. The subsequent layer of adsorbed indole undergoes photo-oxidation to produce indigo. The extent of adsorption controls the photochemical yield of the product. About 2.5 x 10(-3) M of indole completely prevents the photodissolution of CdS particles.

引用

页码：251 / 256

页数：6

共 26 条

[1] ONE-ELECTRON OXIDATION OF METHOXYLATED AND HYDROXYLATED INDOLES BY N-3. .1. CHARACTERIZATION OF THE PRIMARY INDOLIC RADICALS [J].