Time resolved structural dynamics of butadiyne-linked porphyrin dimers

Camargo, Franco V. A., Hall, Christopher R., Anderson, Harry L., Meech, Stephen R. ORCID: https://orcid.org/0000-0001-5561-2782 and Heisler, Ismael A. (2016) Time resolved structural dynamics of butadiyne-linked porphyrin dimers. Structural Dynamics, 3. ISSN 2329-7778

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Abstract

In this work the timescales and mechanisms associated with the structural dynamics of butadiyne-linked porphyrin dimers are investigated through time resolved narrowband pump / broadband probe transient absorption spectroscopy. Our results confirm previous findings that the broadening is partly due to a distribution of structures with different (dihedral) angular conformations. Comparison of measurements with excitations on the red and blue sides of the Q-band unravel the ground and excited state conformational re-equilibration timescales. Further comparison to a planarized dimer, through addition of a ligand, provide conclusive evidence for the twisting motion performed by the porphyrin dimer in solution.

Item Type:	Article
Additional Information:	© 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Faculty \ School:	Faculty of Science > School of Chemistry (former - to 2024) Faculty of Science > School of Chemical Sciences and Pharmacy (former - to 2009)
UEA Research Groups:	Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017) Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Depositing User:	Pure Connector
Date Deposited:	14 Jan 2016 17:00
Last Modified:	18 Oct 2024 23:42
URI:	https://ueaeprints.uea.ac.uk/id/eprint/56324
DOI:	10.1063/1.4940222

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