Solvent influence on the photophysical properties of 4-methoxy-N-methyl-1,8-naphthalimide
Solvent influence on the photophysical properties of 4-methoxy-N-methyl-1,8-naphthalimide
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DOI：
10.1016/j.saa.2005.05.008
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发表时间：
2006-01-01
影响因子：
4.4
通讯作者：
Politi, MJ
中科院分区：
文献类型：
--
作者：
Demets, GJF;Triboni, ER;Politi, MJ
研究了4-甲氧基-N-甲基-1，8-萘酰亚胺(1)在几种极性/非极性、质子性/非质子性溶剂以及乙醇-水混合溶剂中的紫外-可见光谱性质。结果表明，溶剂的极性及其氢键给体(HBD)能力对1的光物理性质有很大的影响。对于二元醇/水混合物，优先溶剂化模型很好地描述了探针可见吸收光谱中的谱带移动，但不能描述相应的发射极大值的移动。溶剂组成与分子跃迁能Et之间的拟线性近似可用于研究乙醇-水混合物的组成，简化了最终分析应用的数学处理。(C)2005 Elsevier B.V.保留所有权利。
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.