Excited state dynamics of cis,cis-1,3-cyclooctadiene: Non-adiabatic trajectory surface hopping

Chakraborty, Pratip, Liu, Yusong, Weinacht, Thomas and Matsika, Spiridoula (2020) Excited state dynamics of cis,cis-1,3-cyclooctadiene: Non-adiabatic trajectory surface hopping. The Journal of Chemical Physics, 152 (17). ISSN 0021-9606

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Abstract

We have performed trajectory surface hopping dynamics for cis, cis-1, 3-cyclooctadiene to investigate the photochemical pathways involved after being excited to the S 1 state. Our calculations reveal ultrafast decay to the ground state, facilitated by conical intersections involving distortions around the double bonds. The main distortions are localized on one double bond, involving twisting and pyramidalization of one of the carbons of that double bond (similar to ethylene), while a limited number of trajectories decay via delocalized (non-local) twisting of both double bonds. The interplay between local and non-local distortions is important in our understanding of photoisomerization in conjugated systems. The calculations show that a broad range of the conical intersection seam space is accessed during the non-adiabatic events. Several products formed on the ground state have also been observed.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Chemistry, Pharmacy and Pharmacology
Related URLs:	http://www.scopus.com/inward/record.url?... https://pubs.aip.org/aip/jcp/article-abs...
Depositing User:	LivePure Connector
Date Deposited:	29 Sep 2025 08:35
Last Modified:	07 Oct 2025 15:32
URI:	https://ueaeprints.uea.ac.uk/id/eprint/100473
DOI:	10.1063/5.0005558

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