Photomotion of Hydrogels with Covalently Attached Azo Dye Moieties-Thermoresponsive and Non-Thermoresponsive Gels.

ABSTRACT: The unique photomotion of azo materials under irradiation has been in the focus of research for decades and has been expanded to different classes of solids such as polymeric glasses, liquid crystalline materials, and elastomers. In this communication, azo dye-containing gels are obtained by photocrosslinking of non-thermoresponsive and lower critical solution temperature type thermoresponsive copolymers. These are analysed with light microscopy regarding their actuation behaviour under laser irradiation. The influences of the cloud-point temperature and of the laser power are investigated in a series of comparative experiments. The thermoresponsive hydrogels show more intense photoactuation when the cloud-point temperature of the non-crosslinked polymer is above, but closer to, room tempe

SUBMITTER: Jaik TG 

PROVIDER: S-EPMC9498539 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature