The energy gap law for triplet states in pt-containing conjugated polymers and monomers

J. S. Wilson, N. Chawdhury, M. R A Al-Mandhary, M. Younus, M. S. Khan, P. R. Raithby, A. Köhler, R. H. Friend

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Abstract

The energy gap law established for aromatic hydrocarbons and rare earth ions relates the nonradiative decay rate to the energy gap of a transition through a multiphonon emission process. We show that this energy gap law can be applied to the phosphoresce of a series of conjugated polymers and monomers for which the radiative decay rate has been enhanced through incorporation of a heavy metal. We find that the nonradiative decay rate from the triplet state T1 increases exponentially with decreasing T1-S0 gap for the polymers and monomers at 300 and 20 K. Comparison of the nonradiative decay of polymers with that of their corresponding monomers highlights the role of electron-lattice coupling.

Original languageEnglish
Pages (from-to)9412-9417
Number of pages6
JournalJournal of the American Chemical Society
Volume123
Issue number38
DOIs
Publication statusPublished - Sep 26 2001

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ASJC Scopus subject areas

  • Chemistry(all)

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