Solvent influence on the photophysical properties of 4-methoxy-N-methyl-1,8-naphthalimide

被引：32
|
作者：
Demets, GJF
Triboni, ER
Alvarez, EB
Arantes, GM
Berci, P
Politi, MJ
机构：
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Ribeirao Preto, SP, Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
[3] Univ Sao Paulo, Inst Quim, BR-05599970 Sao Paulo, SP, Brazil
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2006年 / 63卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
naphthalimide; solvatochromism and spectrophotometric probe; ethanol-water mixtures;
D O I：
10.1016/j.saa.2005.05.008
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
4-Methoxy-N-methyl-1,8-naphthalimide (1) exhibits considerable solvatochromism and its UV-vis spectral properties have been studied in several polar/non-polar and protic/aprotic solvents, as well as in ethanol-water mixtures. The results reveal a strong influence of the solvent's polarity and its hydrogen-bond donor (HBD) capability on the photophysical properties of 1. For binary ethnaol/water mixtures, preferential solvation models describe the band shifts in the probe's visible absorption spectrum well, but they fail to describe the correponding shifts of the emission maxima. Pseudolinear approximations between solvent composition and molecule's transition energies, ET, can be used to study the composition of ethanol-water mixtures, simplifying the mathematical treatment for eventual analytical applications. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：220 / 226
页数：7
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