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...
| Váldodahkkit: | , , , |
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| Materiálatiipa: | Journal article |
| Giella: | English |
| Almmustuhtton: |
2006
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| _version_ | 1826274013282828288 |
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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. |
| first_indexed | 2024-03-06T22:36:59Z |
| format | Journal article |
| id | oxford-uuid:5a3c23e5-995c-4ef4-a4cb-2a3bd2d352a9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:36:59Z |
| publishDate | 2006 |
| record_format | dspace |
| 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 |