Intermolecular photoinduced proton transfer in nile blue and oxazine 720

被引：25

作者：

Grofcsik, A ^{[1
]}

Kubinyi, M ^{[1
]}

Jones, WJ ^{[1
]}

机构：

[1] UNIV COLL SWANSEA,DEPT CHEM,SWANSEA SA2 8PP,W GLAM,WALES

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 250卷 / 3-4期

基金：

英国工程与自然科学研究理事会; 匈牙利科学研究基金会;

关键词：

D O I：

10.1016/0009-2614(96)00003-6

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 S-1 excited state lifetimes of laser dyes nile blue (NB) and oxazine 720 (OX) have been determined in acidic aqueous solutions as functions of pH. The decay constants show a linear dependence on [H+], with an identical slope for both molecules. The reason for the faster decay in acidic solutions results from the formation of dications by reaction of excited state monocations with hydrogen ions. These results suggest that in the excited state reaction the additional proton locates on the ring nitrogen atom rather than on the terminal amino groups.

引用

页码：261 / 265

页数：5

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