Studies on Cross-linked PPE π-π Stack Effect in Solid State

Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (3): 589.

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Studies on Cross-linked PPE π-π Stack Effect in Solid State

WANG Wen-Zhong, HUANG Peng-Cheng*

Department of Polymer and Composites Materials, School of Materials Science and Engineering, Beihang University, Beijing 100083, China

Received:2005-02-22 Online:2006-03-10 Published:2006-03-10
Contact: HUANG Peng-Cheng,E-mail: huangpc@buaa.edu.cn

Abstract

Abstract:

We synthesized oligo(p-phenyleneethynylene)s and oligo(p-phenyleneethynylene)s end-capped by vinyl by Sonogashira cross\|coupling reaction. Then we prepared cross-linked PPE with or without residue vinyl by radical polymerization or heat curing at 175\_280 ℃ of vinyl\|functionalized olgomers. Having investigated cross-linked PPE and oligomers by FTIR, WXRD and photoluminescence, we found that cross-linked PPE without residual vinyl destroys the main chain π-π stacking completely in solid state. Moreover, the wavelength of the strongest emission of these cross-linked PPE varies from 310 nm to 390 nm, so they can be used as purple/blue light\|emitting materials.

Key words: Oligo(p\, phenyleneethynylene); Cross-linking; π-π stack; Photoluminescence

CLC Number:

O631

TrendMD:

WANG Wen-Zhong, HUANG Peng-Cheng. Studies on Cross-linked PPE π-π Stack Effect in Solid State[J]. Chem. J. Chinese Universities, 2006, 27(3): 589.

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Studies on Cross-linked PPE π-π Stack Effect in Solid State

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