QUENCHING OF SUBSTITUTED NAPHTHALENES FLUORESCENCE BY CHLOROMETHANES

被引：26

作者：

BEHERA, PK

MUKHERJEE, T

MISHRA, AK

机构：

[1] INDIAN INST TECHNOL,DEPT CHEM,MADRAS 600036,TAMIL NADU,INDIA

[2] SAMBALPUR UNIV,DEPT CHEM,SAMBALPUR 768019,INDIA

[3] BHABHA ATOM RES CTR,DIV CHEM,BOMBAY 400085,MAHARASHTRA,INDIA

来源：

JOURNAL OF LUMINESCENCE | 1995年 / 65卷 / 03期

关键词：

D O I：

10.1016/0022-2313(95)00066-Y

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The fluorescence quenching of some substituted naphthalenes by chloromethanes such as carbontetrachloride (CCl4), chloroform (CKCl3) and dichloromethane (CH2Cl2) have been studied in a large number of solvents in room temperature. The quenching rate constants (k(q)) have been determined for all the fluorophores in all the solvents. For CCl4 quenching the k(q) depends on solvent viscosity whereas for CHCl3 and CH2Cl2 it depends neither on solvent viscosity nor on solvent polarity. From the results the quenching mechanism is explained in terms of an encounter complex formation for CCl4 quenching and an intermediate donor-acceptor complex formation for CHCl3 and CH2Cl2 quenching in the excited state.

引用

页码：137 / 142

页数：6

共 20 条

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