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Ultrafast spectroscopic investigation of discrete co-assemblies of a Zn-porphyrin–polymer conjugate with a hexapyridyl template
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Quan, Wen-Dong, Baker, Lewis A., Napier, Richard, O'Reilly, Rachel K., Stavros, Vasilios G., Staniforth, Michael and Wilks, Thomas R. (2021) Ultrafast spectroscopic investigation of discrete co-assemblies of a Zn-porphyrin–polymer conjugate with a hexapyridyl template. Chemical Physics Letters, 777 . 138736. doi:10.1016/j.cplett.2021.138736 ISSN 0009-2614.
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Official URL: http://dx.doi.org/10.1016/j.cplett.2021.138736
Abstract
One of the key features of biological light harvesting complexes (LHCs) is their incorporation of multi-chromophoric reaction centres via non-covalent interactions. Most synthetic mimics require relatively complex syntheses and are constructed in organic solvents. Here, we report the use of polymer self-assembly to enable the formation of Zn-porphyrin–pyridine complexes in aqueous solution. Time-resolved femtosecond pump–probe spectroscopy revealed four time constants, each associated with significant ground state bleach recovery, suggesting energy transfer between the porphyrin and pyridine. Self-assembly opens up new photophysical relaxation pathways, making it a useful additional strategy for the construction of more advanced LHC mimics.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QD Chemistry Q Science > QK Botany Q Science > QP Physiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) |
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Library of Congress Subject Headings (LCSH): | Polymers , Porphyrins , Supramolecular chemistry , Photochemistry , Flash photolysis, Photosynthesis | ||||||||||||||||||
Journal or Publication Title: | Chemical Physics Letters | ||||||||||||||||||
Publisher: | Elsevier BV | ||||||||||||||||||
ISSN: | 0009-2614 | ||||||||||||||||||
Official Date: | 16 August 2021 | ||||||||||||||||||
Dates: |
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Volume: | 777 | ||||||||||||||||||
Article Number: | 138736 | ||||||||||||||||||
DOI: | 10.1016/j.cplett.2021.138736 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
Date of first compliant deposit: | 6 July 2021 | ||||||||||||||||||
Date of first compliant Open Access: | 11 May 2022 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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