laboratoire de physique statistique
 
 
laboratoire de physique statistique

Publications

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CHEMISTRY-A EUROPEAN JOURNAL 


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P U B L I C A T I O N S



 
2012
Energy Propagation Through a Protometabolism Leading to the Local Emergence of Singular Stationary Concentration Profiles - Emond, Matthieu and Le Saux, Thomas and Allemand, Jean-Francois and Pelupessy, Philippe and Plasson, Raphael and Jullien, Ludovic
CHEMISTRY-A EUROPEAN JOURNAL 1814375-14383 (2012)

Abstract : Living systems rely on chains of energy transfer from an energy source to maintain their metabolism. This task requires functionally identified components and organizations. However, propagation of a sustained energy flux through a cascade of reaction cycles has never been reproduced at a steady state in a simple chemical system. By using energy patterning and a diffusing hub reactant, we achieved the transfer of energy through an abiotic protometabolism. Patterned illumination was applied to a liquid solution of a reversible photoacid. It resulted in the local onset of a proton pump, which subsequently drove an extended reactiondiffusion cycle that involved pH-sensitive reactants. Thus, light has been used for locally setting out of chemical equilibrium a reaction involving blind reactants. The spontaneous onset of an energy-transfer chain notably drives the local generation of singular dissipative chemical structures; continuous matter fluxes are dynamically maintained at boundaries between spatially and chemically segregated zones, in the absence of any membrane or predetermined material structure.