This research explores the catalytic activity and properties of azobenzene ionic liquids, suggesting potential for innovative applications.
We report on the synthesis of surface-active azobenzene-based ionic liquids (AzoILs) with tuneable and photoswitchable physicochemical properties. The reversible isomerization between the trans- and the cis-form was studied in different solvents and concentration by spectroscopic methods. The potential of ionic AzoILs as light-controllable epoxidation catalysts was studied regarding their catalytic activity and switchable micelle formation in aqueous media. Zwitterionic AzoILs were investigated regarding their unprecedented light-controlled solubility, surface-activity in aqueous media and potential application in biphasic epoxidations. Additional valuable insight into the photoisomerizations is provided by computational studies.
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Hegelmann et al. (2025) studied this question.
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