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Chang MH, Frampton MJ, Anderson HL, et al. Intermolecular interaction effects on the ultrafast depolarization of the optical emission from conjugated polymers. Phys Rev Lett. 2007;98(2):027402doi: 10.1103/PhysRevLett.98.027402.
Chang, M. H., Frampton, M. J., Anderson, H. L., & Herz, L. M. (2007). Intermolecular interaction effects on the ultrafast depolarization of the optical emission from conjugated polymers. Physical review letters, 98(2), 027402. https://doi.org/10.1103/PhysRevLett.98.027402
Chang, M H, et al. "Intermolecular interaction effects on the ultrafast depolarization of the optical emission from conjugated polymers." Physical review letters vol. 98,2 (2007): 027402. doi: https://doi.org/10.1103/PhysRevLett.98.027402
Chang MH, Frampton MJ, Anderson HL, Herz LM. Intermolecular interaction effects on the ultrafast depolarization of the optical emission from conjugated polymers. Phys Rev Lett. 2007 Jan 12;98(2):027402. doi: 10.1103/PhysRevLett.98.027402. Epub 2007 Jan 10. PMID: 17358647.
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Phys Rev Lett. 2007 Jan 12;98(2):027402. doi: 10.1103/PhysRevLett.98.027402. Epub 2007 Jan 10.

Intermolecular interaction effects on the ultrafast depolarization of the optical emission from conjugated polymers.

Physical review letters

M H Chang, M J Frampton, H L Anderson, L M Herz

Affiliations

  1. Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.

PMID: 17358647 DOI: 10.1103/PhysRevLett.98.027402

Abstract

We have investigated the effect of interchain interactions on the ultrafast depolarization of the photoluminescence from solid films of a conjugated polymer. Accurate control was exercised over the interchain separation by threading of the conjugated chains with insulating macrocycles or complexation with an inert host polymer. Our measurements indicate that excitation into the higher electronic states of a chain aggregate is followed by a fast (<100 fs) relaxation into lower excited states with an associated rotation of the transition dipole moment. These findings emphasize the need for consideration of initial excitonic delocalization across more than one polymeric chain.

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