Influence of inter-ring bridge on the optical properties of thiophene-based oligomers

被引：15

作者：

Pasini, M ^{[1
]}

Destri, S ^{[1
]}

Botta, C ^{[1
]}

Porzio, W ^{[1
]}

机构：

[1] CNR, Ist Chim Macromol, I-20133 Milan, Italy

来源：

SYNTHETIC METALS | 2000年 / 113卷 / 1-2期

关键词：

blocked-oligomers; structure; optical properties;

D O I：

10.1016/S0379-6779(00)00189-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four tetramers, based on thiophene and phenylene residues in which the torsion angles between thiophene rings are blocked by a chemical bridge, are characterized with X-ray diffraction analysis and optical spectroscopy by comparison with quaterthiophene. Structural determinations show different packing arrangements for substituted and unsubstituted oligomers, resulting in different pi-overlap among adjacent molecules. While in solution, the locked molecules display red-shifted absorptions and decreased Stokes-shifts, in the solid state, their optical properties strongly depend on the packing arrangements. (C) 2000 Elsevier Science S.A. All rights reserved.

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收藏

页码：129 / 133

页数：5

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