Solution processable alternating oligothiophene-PEO-block-co-polymers: synthesis and evidence for solvent dependent aggregation

被引：33

作者：

Kilbinger, AFM ^{[1
]}

Feast, WJ ^{[1
]}

机构：

[1] Univ Durham, IRC Polymer Sci & Technol, Durham DH1 3LE, England

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2000年 / 10卷 / 08期

关键词：

D O I：

10.1039/b002899l

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：

A new route to oligothiophene-PEO-block-co-polymers has been developed, in which well-defined alpha-oligothiophene blocks (from bithiophene to sexithiophene) alternate with poly(ethylene oxide) blocks. These materials show high solubility in common organic solvents. UV/visible and fluorescence studies in solution indicate that the oligothiophene segments are molecularly dissolved in good solvents like chloroform. Aggregation of the oligothiophenes occurs in dioxane-water mixtures, which is manifest by shifts of the UV/visible absorption maxima towards the blue and quenching of the fluorescence. An oligothiophene length of three thiophenes (terthiophene) is necessary to observe this aggregation phenomenon.

引用

页码：1777 / 1784

页数：8

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