Chemical tuning of the electronic properties of poly(p-phenylenevinylene)-based copolymers

P L Burn, A Kraft, D R Baigent, D D C BRADLEY, A R BROWN, R H FRIEND, R W Gymer, A B HOLMES, R W Jackson

Research output: Contribution to journalArticle

Abstract

Molecular engineering has allowed the control of the HOMO-LUMO gap energy in a family of conjugated polymers based on poly(p-phenylenevinylene) (PPV). Random copolymerization of 1 and 6 afforded precursor polymers 10 with two different leaving groups. Treatment under thermal conditions led to a partially conjugated polymer 11 with regions of high and low HOMO-LUMO gap energy, showing a 30-fold improvement in electroluminescence efficiency compared with PPV, while treatment under acidic and thermal conditions gave more substantially conjugated polymers 12 with lower HOMO-LUMO gap energies. This chemistry enabled the formation of lithographically patterned polymers exhibiting electroluminescence. The scope of these copolymerizations was also explored with other copolymers, 19 and 22b,c.

Original languageEnglish
Pages (from-to)10117-10124
Number of pages8
JournalJournal of the American Chemical Society
Volume115
Issue number22
DOIs
Publication statusPublished - 3 Nov 1993

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