Dissipative self-assembly processes in Nature rely on chemical fuels that activate proteins for assembly through the formation of a noncovalent complex. The catalytic activity of the assemblies causes fuel degradation, resulting in the formation of an assembly in a high-energy, out-of-equilibrium state. Herein, we apply this concept to a synthetic system and demonstrate that a substrate can induce the formation of vesicular assemblies, which act as cooperative catalysts for cleavage of the same substrate.

Aphotoresponsive system where structure formation is coupled to catalytic activity is presented. The observed catalytic activity is reliant on intermolecular cooperative effects that are present when amphiphiles assemble into vesicular structures.P hotoresponsive units within the amphiphilic precatalysts allowfor switching between assembled and disassembled states,therebymodulating the catalytic activity.The ability to reversibly form cooperative catalysts within adynamic selfassembled system represents ac onceptually new tool for the design of complex artificial systems in water.

A fraction of the atmospheric pesticides can be adsorbed on particles surface according to their physicochemical properties. After adsorption, pesticides can undergo heterogeneous reactivity with atmospheric oxidants such as ozone, but the influence of the pesticide surface coating (i.e., the percentage of the particle surface covered by pesticide molecules) on the degradation kinetics is not well-understood. To estimate the importance of this phenomenon, the influence of the surface coating level in pesticides on the heterogeneous ozonolysis of cyprodinil, deltamethrin, permethrin, and pendimethalin adsorbed on hydrophobic and hydrophilic silicas was investigated. Surface coating level varied from 0.3% to 15% of a monolayer. Generally, the increase of the surface coating level induced a slower degradation of the pesticides above 1% to 3% of a monolayer. This decrease was attributed to a shielding

Dissipative self-assembly processes in nature rely on chemical fuels that activate proteins for assembly through the formation of an oncovalent complex. The catalytic activity of the assemblies causes fuel degradation, resulting in the formation of an assembly in ahigh-energy,out-of-equilibrium state.H erein, we apply this concept to as ynthetic system and demonstrate that as ubstrate can induce the formation of vesicular assemblies,w hich act as cooperative catalysts for cleavage of the same substrate.