Coherent intrachain energy migration in a conjugated polymer at room temperature

Elisabetta Collini, Gregory D. Scholes

Research output: Contribution to journalArticle

597 Scopus citations

Abstract

The intermediate coupling regime for electronic energy transfer is of particular interest because excitation moves in space, as in a classical hopping mechanism, but quantum phase information is conserved. We conducted an ultrafast polarization experiment specifically designed to observe quantum coherent dynamics in this regime. Conjugated polymer samples with different chain conformations were examined as model multichromophoric systems. The data, recorded at room temperature, reveal coherent intrachain (but not interchain) electronic energy transfer. Our results suggest that quantum transport effects occur at room temperature when chemical donor-acceptor bonds help to correlate dephasing perturbations.

Original languageEnglish (US)
Pages (from-to)369-373
Number of pages5
JournalScience
Volume323
Issue number5912
DOIs
StatePublished - Jan 16 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

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