The synthesis of supramolecular crosslinked linear poly(trimethylene iminium trifluorosulfonimide) polymer gels, which are sensitive to light and thermal stimuli, was analyzed. It is found that the reversible sol-gel phase transition in the gels is based on the supramolecular crosslinking of polymers by bifunctional crosslinkers. The strategy is based on the formation of selective supramolecular attachments between multiple hydrogen bond donors on the polymer and two hydrogen bond acceptors in the crosslinkers. Upon irradiating the composite gels with UV light, their viscosity changes significantly. Supramolecular crosslinking of polymers by low-molecular-weight crosslinkers is a useful strategy for designing and constructing thermally reversible. The results show that by appropriate molecular design of the crosslinker, it is possible to obtain some new reversible gels.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering