Journal
SYNTHETIC METALS
Volume 114, Issue 1, Pages 61-64Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0379-6779(00)00225-3
Keywords
dendritic sidegroups; three-dimensional barriers; conjugated polymer fluorescence
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We study the photophysics of poly-phenylenevinylene (PPV) polymers with large dendritic sidegroups under both isolated chain and aggregated chain conditions. Aggregation causes a substantial reduction in photoluminescence (PL) quantum yield but that decrease is ameliorated by the attachment of an additional generation of dendron to the PPV backbone. Three-dimensional separation of chromophores can be achieved with these sidegroups and the formation of nearly nan-emissive interchain excitations leads to a factor of four enhancements in solid-state PL. (C) 2000 Elsevier Science S.A. All rights reserved.
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