Solvent effect on the photophysical properties of 4-phenoxy-N-methyl-1,8-naphthalimide

被引：67

作者：

Magalhaes, J. L. ^{[1
]}

Pereira, R. V. ^{[1
]}

Triboni, E. R. ^{[1
]}

Berci Filho, P. ^{[1
]}

Gehlen, M. H. ^{[1
]}

Nart, F. C. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560590 Sao Carlos, SP, Brazil

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2006年 / 183卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

naphthalimide; solvent effects; photophysical properties;

D O I：

10.1016/j.jphotochem.2006.03.012

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 properties of N-methyl-1,8-naphthalimide (NI) and 4-phenoxy-N-methyl-1,8-naphthalimide (4-PNI) are studied by steady-state and time-resolved emission measurements. Both absorption and fluorescence spectra are red-shifted when the electron donor phenoxy group (-OPh) is introduced at the C-4 position. Compared to NI, the spectral shift in acetonitrile is 27 and 42 nm for the absorption and fluorescence, respectively. The 4-PNI shows high fluorescence emission in non-polar aprotic solvents that can be ascribed to stabilization of the S, state. The emission intensity of the 4-PNI decreases by addition of water to dioxane solution, and the fluorescence quenching occurs by combination of dynamic and static contribution ascribed to specific solute-solvent interaction. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：165 / 170

页数：6

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