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Structure-Directed Exciton Dynamics in Templated Molecular Nanorings
Conjugated polymers with cyclic structures are interesting because their symmetry leads to unique electronic properties. Recent advances in Vernier templating now allow large shape-persistent fully conjugated porphyrin nanorings to be synthesized, exhibiting unique electronic properties. We examine...
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| Published in: | Journal of physical chemistry. C 2015-03, Vol.119 (11), p.6414-6420 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-a532t-69a8ecc627baf35b3376cfad050b988cdae2beb3ebbe39f9569d09eba37e9b833 |
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| cites | cdi_FETCH-LOGICAL-a532t-69a8ecc627baf35b3376cfad050b988cdae2beb3ebbe39f9569d09eba37e9b833 |
| container_end_page | 6420 |
| container_issue | 11 |
| container_start_page | 6414 |
| container_title | Journal of physical chemistry. C |
| container_volume | 119 |
| creator | Gong, Juliane Q Parkinson, Patrick Kondratuk, Dmitry V Gil-Ramírez, Guzmán Anderson, Harry L Herz, Laura M |
| description | Conjugated polymers with cyclic structures are interesting because their symmetry leads to unique electronic properties. Recent advances in Vernier templating now allow large shape-persistent fully conjugated porphyrin nanorings to be synthesized, exhibiting unique electronic properties. We examine the impact of different conformations on exciton delocalization and emission depolarization in a range of different porphyrin nanoring topologies with comparable spatial extent. Low photoluminescence anisotropy values are found to occur within the first few hundred femtoseconds after pulsed excitation, suggesting ultrafast delocalization of excitons across the nanoring structures. Molecular dynamics simulations show that further polarization memory loss is caused by out-of-plane distortions associated with twisting and bending of the templated nanoring topologies. |
| doi_str_mv | 10.1021/acs.jpcc.5b00210 |
| format | article |
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| identifier | ISSN: 1932-7447 |
| ispartof | Journal of physical chemistry. C, 2015-03, Vol.119 (11), p.6414-6420 |
| issn | 1932-7447 1932-7455 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4418736 |
| source | American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list) |
| subjects | Anisotropy Electronic properties Excitation Molecular dynamics Molecular structure Nanostructure Porphyrins Topology |
| title | Structure-Directed Exciton Dynamics in Templated Molecular Nanorings |
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