Coherent photoisomerization and quantum yield of biomimetic molecular switches

M. Ngueye, I. Schapiro, S. Fusi, S. Haacke, M. Olivucci, J. Leonard

Research output: Contribution to conferencePaperpeer-review

Abstract

Photoisomerizing molecular switches convert light energy into mechanical energy at the molecular level. In coherent photoisomerization, the energy is impulsively funnelled into a small number of vibrational modes, so that vibrational wave packets are observed throughout the reaction. Observing wavepackets in the photoproduct ground ground state, which requires the excited state coherence to survive the passage through the conical intersection, was so far observed for rhodopsin (Rho) only [1,2]. However, using ultrafast pump-probe transient absorption (TA) spectroscopy it was recently demonstrated to occur also in small artificial photoswitches in solution [3]. These were based on an indanylidene-pyrroline (IP) chemical skeleton, where a pyrole ring is linked to an indanone moiety via a single double carbonyl bond C1'=C 1. It was shown by ab initio quantum chemical calculations that IP derivatives are able to reproduce the excited state (S1) potential energy surface of retinal in rhodopsin [4].

Original languageAmerican English
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013 - Munich, Germany
Duration: 12 May 201316 May 2013

Conference

Conference2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013
Country/TerritoryGermany
CityMunich
Period12/05/1316/05/13

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