EXTENDED PI-CONJUGATION IN POLY(P-PHENYLENEVINYLENE) FROM A CHEMICALLY-MODIFIED PRECURSOR POLYMER

被引：49

作者：

HALLIDAY, DA ^{[1
]}

BURN, PL ^{[1
]}

FRIEND, RH ^{[1
]}

BRADLEY, DDC ^{[1
]}

HOLMES, AB ^{[1
]}

KRAFT, A ^{[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)90181-U

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have developed a synthetic method that allows a controlled increase in the one-dimensional character of poly(p-phenylenevinylene) by subtle chemical modification of the precursor polymer. Examples of the unoriented fully conjugated material exhibit room temperature optical absorption spectra (uncorrected for reflectivity) which have a peak in absorption at 2.45 eV with subsidiary shoulders at higher photon energies. The absorption maximum is red-shifted with respect to previously observed values. Luminescence spectra of these samples recorded at 10K are complementary with a peak in emission at 2.38 eV and accompanying subsidiary maxima at lower energies. The peaks in absorption and emission are identified as the transitions between the vibrational ground states of the electronic and the first excited singlet states which we term the (0,0) transitions.

引用

页码：954 / 959

页数：6

共 17 条

[1]

BRADLEY DDC, 1991, CHEM BRIT, V27, P719

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