Issue 20, 2017

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 a 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 occurs 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 T-photochromism. A literature survey, showing that most of the required kinetic features are not so rare, let us anticipate its practical feasibility.

Graphical abstract: Enhanced photo-responsiveness in a photoswitchable system model: emergent hormetic catalysis

Supplementary files

Article information

Article type
Paper
Submitted
07 Mar 2017
Accepted
14 Apr 2017
First published
19 Apr 2017

Phys. Chem. Chem. Phys., 2017,19, 12890-12897

Enhanced photo-responsiveness in a photoswitchable system model: emergent hormetic catalysis

J.-C. Micheau and C. Coudret, Phys. Chem. Chem. Phys., 2017, 19, 12890 DOI: 10.1039/C7CP01470H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements