Dependence of photochemical reactivity of the all-trans retinal protonated Schiff base on the solvent and the excitation wavelength

Photochemistry and Photobiology
Goran ZgrablićFulvio Parmigiani

Abstract

An all-optical experimental technique aimed at measuring photoisomerization quantum yield (phi) of the all-trans protonated Schiff base of retinal in solution has been implemented. Upon the increase in the excitation wavelength from 400 to 540 nm a slight increase in phi from 0.16 +/- 0.03 to 0.20 +/- 0.02 is observed in the chromophore dissolved in methanol, whereas the phi value of the one dissolved in acetonitrile varies only from 0.22 +/- 0.03 (400 nm) to 0.23 +/- 0.04 (540 nm). The results suggest that dissipation of the excited-state vibrational energy excess, along with environment-induced modifications of the potential energy surfaces are necessary for an efficient retinal photoisomerization in both solvent and protein environment.

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Citations

May 3, 2014·The Journal of Chemical Physics·N J A CoughlanE J Bieske
May 11, 2019·Physical Chemistry Chemical Physics : PCCP·James N BullJan R R Verlet
Oct 29, 2011·Physical Chemistry Chemical Physics : PCCP·Jan Philip KraackMarcus Motzkus
Sep 26, 2017·Physical Chemistry Chemical Physics : PCCP·M MališN Došlić
Oct 22, 2013·Physical Chemistry Chemical Physics : PCCP·Y TokerL H Andersen
Sep 20, 2012·Physical Chemistry Chemical Physics : PCCP·Jan Philip KraackMarcus Motzkus
Dec 8, 2011·Journal of the American Chemical Society·Goran ZgrablićFulvio Parmigiani
Oct 12, 2010·The Journal of Physical Chemistry. a·João Pedro MalhadoJames T Hynes
Sep 3, 2014·The Journal of Physical Chemistry. B·Chutintorn PunwongTodd J Martínez

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