Molecular assemblies that form, break up, or change morphology upon application of external stimuli, such as light irradiation, redox reaction, magnetic field, temperature or pH change, have been applied for triggering controlled release in a range of systems such as drug delivery and perfume in personal care products.  Our particular interest lies in active control of interfacial properties and molecular assemblies formations by means of photo-responsive amphiphiles (surfactants). The benefits of photo-responsive nature as an external stimulus over other stimuli include scalable miniaturization and limited chemical contamination, which allows for the development of green sustainable systems.<br/>      In this presentation, our recent studies will be presented regarding the formation control of various molecular assemblies, such as micelles (with and without solubilizates),  worm-like micelles, and admicelles formed on the silica surface, using “photo-switchable”  azobenzene modified surfactants, and novel "photo-cleavable" surfactants.  By switching the formation of these micellar systems by light irradiation, active control of solubilization, viscoelasticity, and dispersion stability of solid particles became possible, respectively.  <br/>

Novel photo-switchable surfactant molecular assemblies- micelles, worm-like micelles, and admicelles

254th National Meeting (2017)

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