Spin-orbit interactions between interchain excitations in conjugated polymers
Motivated by the reported enhanced singlet exciton yield in light-emitting polymers, we investigate spin-orbit coupling between Coulombically bound interchain excitations. We show theoretically that because of the close similarity of the singlet and triplet interchain wave functions, spin-orbit coup...
| Auteurs principaux: | , , |
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| Format: | Journal article |
| Langue: | English |
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2010
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| _version_ | 1826284825252724736 |
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| author | Barford, W Bursill, R Makhov, D |
| author_facet | Barford, W Bursill, R Makhov, D |
| author_sort | Barford, W |
| collection | OXFORD |
| description | Motivated by the reported enhanced singlet exciton yield in light-emitting polymers, we investigate spin-orbit coupling between Coulombically bound interchain excitations. We show theoretically that because of the close similarity of the singlet and triplet interchain wave functions, spin-orbit coupling between these states is negligible. Using density matrix renormalization group calculations on model systems, we confirm these theoretical predictions: spin-orbit coupling between interchain states is typically 103 - 104 times smaller than between corresponding intramolecular states, being typically ca. 1× 10 -7 eV for disordered polymers. We discuss the implication of these results for the possibly enhanced singlet exciton yield in light-emitting polymers. © 2010 The American Physical Society. |
| first_indexed | 2024-03-07T01:19:39Z |
| format | Journal article |
| id | oxford-uuid:8fe543f5-f8e8-4f3f-9712-0f5ad721c62a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:19:39Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:8fe543f5-f8e8-4f3f-9712-0f5ad721c62a2022-03-26T23:07:39ZSpin-orbit interactions between interchain excitations in conjugated polymersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8fe543f5-f8e8-4f3f-9712-0f5ad721c62aEnglishSymplectic Elements at Oxford2010Barford, WBursill, RMakhov, DMotivated by the reported enhanced singlet exciton yield in light-emitting polymers, we investigate spin-orbit coupling between Coulombically bound interchain excitations. We show theoretically that because of the close similarity of the singlet and triplet interchain wave functions, spin-orbit coupling between these states is negligible. Using density matrix renormalization group calculations on model systems, we confirm these theoretical predictions: spin-orbit coupling between interchain states is typically 103 - 104 times smaller than between corresponding intramolecular states, being typically ca. 1× 10 -7 eV for disordered polymers. We discuss the implication of these results for the possibly enhanced singlet exciton yield in light-emitting polymers. © 2010 The American Physical Society. |
| spellingShingle | Barford, W Bursill, R Makhov, D Spin-orbit interactions between interchain excitations in conjugated polymers |
| title | Spin-orbit interactions between interchain excitations in conjugated polymers |
| title_full | Spin-orbit interactions between interchain excitations in conjugated polymers |
| title_fullStr | Spin-orbit interactions between interchain excitations in conjugated polymers |
| title_full_unstemmed | Spin-orbit interactions between interchain excitations in conjugated polymers |
| title_short | Spin-orbit interactions between interchain excitations in conjugated polymers |
| title_sort | spin orbit interactions between interchain excitations in conjugated polymers |
| work_keys_str_mv | AT barfordw spinorbitinteractionsbetweeninterchainexcitationsinconjugatedpolymers AT bursillr spinorbitinteractionsbetweeninterchainexcitationsinconjugatedpolymers AT makhovd spinorbitinteractionsbetweeninterchainexcitationsinconjugatedpolymers |