Size-independent energy transfer in biomimetic nanoring complexes
Supramolecular antenna-ring complexes are of great interest due to their presence in natural light-harvesting complexes. While such systems are known to provide benefits through robust and efficient energy funneling, the relation-ship between molecular structure, strain (governed by nuclear co-ordin...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Chemical Society
2016
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| _version_ | 1826289192596930560 |
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| author | Parkinson, P Kamonsutthipaijit, N Anderson, H Herz, L |
| author_facet | Parkinson, P Kamonsutthipaijit, N Anderson, H Herz, L |
| author_sort | Parkinson, P |
| collection | OXFORD |
| description | Supramolecular antenna-ring complexes are of great interest due to their presence in natural light-harvesting complexes. While such systems are known to provide benefits through robust and efficient energy funneling, the relation-ship between molecular structure, strain (governed by nuclear co-ordinates and motion) and energy dynamics (arising from electronic behavior) is highly complex. We present a synthetic antenna-nanoring system based on a series of conjugated porphyrin chromophores ideally suited to explore such effects. By systematically varying the size of the acceptor nanoring, we reveal the interplay between antenna-nanoring binding, local strain and energy dynamics on the picosecond timescale. Binding of the antenna unit creates a local strain in the nanoring, and this strain was measured as a function of the size of the nanoring, by UV-vis-NIR titration, providing information on the conformational flexibility of the system. Strikingly, the energy transfer rate is independent of nanoring size, indicating the existence of strain-localized acceptor states, spread over about six porphyrin units, arising from the non-covalent antenna-nanoring association. |
| first_indexed | 2024-03-07T02:25:10Z |
| format | Journal article |
| id | oxford-uuid:a5573353-5b50-4edb-9169-739cb1b54ac5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:25:10Z |
| publishDate | 2016 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:a5573353-5b50-4edb-9169-739cb1b54ac52022-03-27T02:39:50ZSize-independent energy transfer in biomimetic nanoring complexesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a5573353-5b50-4edb-9169-739cb1b54ac5EnglishSymplectic Elements at OxfordAmerican Chemical Society2016Parkinson, PKamonsutthipaijit, NAnderson, HHerz, LSupramolecular antenna-ring complexes are of great interest due to their presence in natural light-harvesting complexes. While such systems are known to provide benefits through robust and efficient energy funneling, the relation-ship between molecular structure, strain (governed by nuclear co-ordinates and motion) and energy dynamics (arising from electronic behavior) is highly complex. We present a synthetic antenna-nanoring system based on a series of conjugated porphyrin chromophores ideally suited to explore such effects. By systematically varying the size of the acceptor nanoring, we reveal the interplay between antenna-nanoring binding, local strain and energy dynamics on the picosecond timescale. Binding of the antenna unit creates a local strain in the nanoring, and this strain was measured as a function of the size of the nanoring, by UV-vis-NIR titration, providing information on the conformational flexibility of the system. Strikingly, the energy transfer rate is independent of nanoring size, indicating the existence of strain-localized acceptor states, spread over about six porphyrin units, arising from the non-covalent antenna-nanoring association. |
| spellingShingle | Parkinson, P Kamonsutthipaijit, N Anderson, H Herz, L Size-independent energy transfer in biomimetic nanoring complexes |
| title | Size-independent energy transfer in biomimetic nanoring complexes |
| title_full | Size-independent energy transfer in biomimetic nanoring complexes |
| title_fullStr | Size-independent energy transfer in biomimetic nanoring complexes |
| title_full_unstemmed | Size-independent energy transfer in biomimetic nanoring complexes |
| title_short | Size-independent energy transfer in biomimetic nanoring complexes |
| title_sort | size independent energy transfer in biomimetic nanoring complexes |
| work_keys_str_mv | AT parkinsonp sizeindependentenergytransferinbiomimeticnanoringcomplexes AT kamonsutthipaijitn sizeindependentenergytransferinbiomimeticnanoringcomplexes AT andersonh sizeindependentenergytransferinbiomimeticnanoringcomplexes AT herzl sizeindependentenergytransferinbiomimeticnanoringcomplexes |