Spectroscopic Investigation of the Carotenoid Deoxyperidinin: Direct Observation of the Forbidden S0 → S1 Transition

The Journal of Physical Chemistry. B
Jordan A GrecoHarry A Frank

Abstract

This paper presents a spectroscopic investigation of deoxyperidinin, a synthetic peridinin analogue in which the carbonyl functional group in peridinin was replaced by a nonconjugated methylene group. Steady-state and ultrafast time-resolved absorption and fluorescence spectroscopic experiments are carried out on deoxyperidinin in n-hexane and acetonitrile at room temperature and in 2-methyltetrahydrofuran at 77 K. The spectra of deoxyperidinin have higher vibronic resolution compared to those of peridinin. The higher resolution is due to a substantial reduction in both molecular conformational disorder and inhomogeneous broadening of the spectra of deoxyperidinin compared to peridinin. Features in the steady-state absorption spectrum of deoxyperidinin that are not evident in the spectrum of peridinin are unambiguously assigned to the forbidden S0 (1(1)Ag(-)) → S1 (2(1)Ag(-)) absorption transition. The characteristics of both the steady-state and time-resolved spectra are interpreted using EOM-CCSD, SAC-CI, and MNDO-PSDCI quantum computational formalisms that provided a theoretical framework for understanding the photophysical properties of the molecules.

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Citations

Aug 26, 2016·The Journal of Physical Chemistry Letters·Leszek FiedorMariusz Pilch
Jan 4, 2017·The Journal of Physical Chemistry Letters·Soumen GhoshWarren F Beck
Apr 7, 2017·The Journal of Physical Chemistry. B·Valentyna KuznetsovaMarcel Fuciman
Jan 13, 2017·Physical Chemistry Chemical Physics : PCCP·Daisuke KosumiHideki Hashimoto
Jan 13, 2017·Biochimica Et Biophysica Acta. Bioenergetics·Hui-Yuan S ChenDariusz M Niedzwiedzki
Jun 9, 2019·Annual Review of Physical Chemistry·Andrew J Musser, Jenny Clark
Sep 5, 2019·Journal of the Royal Society, Interface·Leszek FiedorMariusz Pilch
May 10, 2018·Archives of Biochemistry and Biophysics·Dariusz M Niedzwiedzki, Robert E Blankenship
Mar 19, 2019·Biochimica Et Biophysica Acta. Bioenergetics·Maria Agustina Dominguez-MartinCheryl A Kerfeld
Jul 19, 2017·The Journal of Physical Chemistry. B·Dariusz M NiedzwiedzkiRobert E Blankenship
Jan 20, 2018·The Journal of Physical Chemistry. B·Jason K GurchiekWarren F Beck
Dec 5, 2017·The Journal of Physical Chemistry. a·Jordan A GrecoRobert R Birge
Jan 26, 2018·Organic Letters·Naoto KinashiKazuhiko Sakaguchi

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