Boosting the photo-switchability of double-responsive water-soluble polymers by incorporating arylazopyrazole dyes.
René SteinbrecherPeiran ZhangChristine M PapadakisPeter Müller-BuschbaumAndreas TaubertAndre LaschewskyPublished in: Chemical communications (Cambridge, England) (2024)
Dual thermo- and light-responsive water-soluble copolymers that respond to exclusively non-invasive triggers are obtained by functionalising poly( N , N -dimethylacrylamide) with arylazopyrazole side chains. The light-induced E - Z ( trans - Z ) photo isomerisation of these dyes provides an exceptionally effective photo-switch, which can reversibly shift the LCST-type phase transition temperatures by almost 25 K.