Photophysical behavior of some aromatic poly(1,3,4-oxadiazole-ether)s derivatives

被引：10

作者：

Ipate, A. M. ^{[1
]}

Homocianu, M. ^{[1
]}

Hamciuc, C. ^{[1
]}

Airinei, A. ^{[1
]}

Bruma, M. ^{[1
]}

机构：

[1] Petru Poni Inst Macromol Chem, Iasi 700487, Romania

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 123卷

关键词：

Solvent effect; Electronic absorption spectra; Emission spectra; Binary mixtures; Preferential salvation; LIGHT-EMITTING POLYMERS; PREFERENTIAL SOLVATION; POLY(ARYLENE ETHER)S; SOLVENT INTERACTIONS; OPTICAL-PROPERTIES; POLARIZABILITY SP; SOLUTE-SOLVENT; OXADIAZOLE; POLYETHERS; FORMAMIDE;

D O I：

10.1016/j.saa.2013.12.057

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The change in electronic absorption and emission spectra of two fluorinated poly(1,3,4-oxadiazoleether)s in neat and binary solvent mixtures has been studied. The optical properties, absorption and photoluminescence of these polymers were investigated in solution and in solid state. The results were discussed as a function of solvent nature, excitation wavelength and local solvent composition, X-2. The Catalan solvent scale was used for describing the solvatochromic shifts of the absorption and emission bands. The following binary solvent mixtures were used: chloroform-N,N'-dimethylformamide (CHCl3-DMF), chloroform-dimethyl sulfoxide (CHCl3-DMSO), and dimethylformamide-dimethyl sulfoxide (DMF-DMSO) and the influence of their composition on the absorption and emission maxima has been analyzed. The preferential solvation parameters such as local mole fraction (X-2(L)), excess function (delta(s2)) and preferential salvation constant (K-PS) were determined. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：167 / 175

页数：9

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