Photoexcitation dynamics in thin films of insulated molecular wires

A study is presented on how encapsulation of conjugated polymer chains affects the motion of photoexcitations and the formation of interchain aggregates in solid films. It is shown that threading of a poly(diphenylene vinylene) backbone inside insulating cyclodextrins (rotaxination) and/or complexat...

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Bibliografski detalji
Glavni autori: Chang, M, Frampton, M, Anderson, H, Herz, L
Format: Journal article
Jezik:English
Izdano: 2006
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author Chang, M
Frampton, M
Anderson, H
Herz, L
author_facet Chang, M
Frampton, M
Anderson, H
Herz, L
author_sort Chang, M
collection OXFORD
description A study is presented on how encapsulation of conjugated polymer chains affects the motion of photoexcitations and the formation of interchain aggregates in solid films. It is shown that threading of a poly(diphenylene vinylene) backbone inside insulating cyclodextrins (rotaxination) and/or complexation of the chains with poly(ethylene oxide) are effective means of preventing the diffusion of excitons to nonradiative defect sites. Ultrafast time-resolved photoluminescence data reveal that excitation transfer between encapsulated chains is still possible and, for the case of rotaxination, is likely to be facilitated through close packing of end groups belonging to adjacent chains. © 2006 American Institute of Physics.
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spelling oxford-uuid:5a3c23e5-995c-4ef4-a4cb-2a3bd2d352a92022-03-26T17:14:36ZPhotoexcitation dynamics in thin films of insulated molecular wiresJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5a3c23e5-995c-4ef4-a4cb-2a3bd2d352a9EnglishSymplectic Elements at Oxford2006Chang, MFrampton, MAnderson, HHerz, LA study is presented on how encapsulation of conjugated polymer chains affects the motion of photoexcitations and the formation of interchain aggregates in solid films. It is shown that threading of a poly(diphenylene vinylene) backbone inside insulating cyclodextrins (rotaxination) and/or complexation of the chains with poly(ethylene oxide) are effective means of preventing the diffusion of excitons to nonradiative defect sites. Ultrafast time-resolved photoluminescence data reveal that excitation transfer between encapsulated chains is still possible and, for the case of rotaxination, is likely to be facilitated through close packing of end groups belonging to adjacent chains. © 2006 American Institute of Physics.
spellingShingle Chang, M
Frampton, M
Anderson, H
Herz, L
Photoexcitation dynamics in thin films of insulated molecular wires
title Photoexcitation dynamics in thin films of insulated molecular wires
title_full Photoexcitation dynamics in thin films of insulated molecular wires
title_fullStr Photoexcitation dynamics in thin films of insulated molecular wires
title_full_unstemmed Photoexcitation dynamics in thin films of insulated molecular wires
title_short Photoexcitation dynamics in thin films of insulated molecular wires
title_sort photoexcitation dynamics in thin films of insulated molecular wires
work_keys_str_mv AT changm photoexcitationdynamicsinthinfilmsofinsulatedmolecularwires
AT framptonm photoexcitationdynamicsinthinfilmsofinsulatedmolecularwires
AT andersonh photoexcitationdynamicsinthinfilmsofinsulatedmolecularwires
AT herzl photoexcitationdynamicsinthinfilmsofinsulatedmolecularwires