DETERMINATION OF THE AVERAGE MOLECULAR-WEIGHT OF POLY(P-PHENYLENEVINYLENE)

被引：32

作者：

HALLIDAY, DA ^{[1
]}

BURN, PL ^{[1
]}

FRIEND, RH ^{[1
]}

BRADLEY, DDC ^{[1
]}

HOLMES, AB ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,CHEM LAB,CAMBRIDGE CB2 1EW,ENGLAND

来源：

SYNTHETIC METALS | 1993年 / 55卷 / 2-3期

关键词：

D O I：

10.1016/0379-6779(93)90172-S

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For any polymer the determination of the average molecular weight and its distribution is an important part of characterising its physical properties. We report values for the MnBAR, MwBAR and dispersity, determined using gel permeation chromatography, of a neutral precursor polymer to poly(p-phenylenevinylene) in relation to polymerisation conditions. We have observed a maximum MnBAR value of approximately 100,000 with a dispersity of 5.7 and compare this value to that calculated for the ''effective conjugation length'', that is the number of repeat units over which uninterrupted pi-electron delocalisation actually takes place, in fully converted poly(p-phenylenevinylene).

引用

页码：902 / 907

页数：6

共 11 条

[1] SYNTHESIS, DOPING, AND ELECTRICAL-CONDUCTIVITY OF HIGH-MOLECULAR-WEIGHT POLY(PARA-PHENYLENE VINYLENE) [J].