Determination of the average molecular weight of poly(p-phenylenevinylene)

D. A. Halliday, P. L. Burn, R. H. Friend, D. D.C. Bradley, A. B. Holmes

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For any polymer the determination of the average molecular weight and its distribution is an important part of characterizing its physical properties. We report values for the M̄n, M̄w and dispersity, determined using gel permeation chromatography, of a neutral precursor polymer to poly(p-phenylenevinylene) in relation to polymerization conditions. We have observed a maximum M̄n 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 π-electron delocalization actually takes place, in fully converted poly(p-phenylenevinylene).
Original languageEnglish (US)
JournalSynthetic Metals
Issue number2 -3 pt 2
StatePublished - Mar 1 1993
Externally publishedYes


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