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Enhanced Photo-Responsiveness in a Photoswitchable System Model: Emergent Hormetic Catalysis

Abstract

Michaelis Menten catalysis by a T-photochromic system has been analyzed numerically. Using an appropriate set of rate constants and quantum yields, we have evidenced an enhanced photo-responsiveness at medium light intensity: the plot of the initial rate vs light intensity is bell-shaped. This emergent phenomenon can be qualified as hormetic catalysis. The analysis of the chemical flows shows that a directional rotation is occurring within the cyclic scheme. Non equilibrium conditions are provided by two independent sources: the chemical energy dissipation from the irreversible exergonic reaction and the steady transformation of light into heat by the T-photochromism. A literature survey, showing that most of the required kinetic features are not so rare, let us anticipate its practical feasibility.

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Publication details

The article was received on 07 Mar 2017, accepted on 14 Apr 2017 and first published on 19 Apr 2017


Article type: Paper
DOI: 10.1039/C7CP01470H
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Enhanced Photo-Responsiveness in a Photoswitchable System Model: Emergent Hormetic Catalysis

    C. Coudret and J. C. Micheau, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP01470H

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