Solvent Programmable Polymers Based on Restricted Rotation

摘要

The ability to control and manipulate recognition properties of polymer gels is important for many applications including chro-matography, drug delivery, and biosensors. An attractive strategy has been to develop stimuli-responsive gels that can change their chemical properties in response to heat, solvent, and pH. A limitation of this strategy is that the stimuli-induced structural changes are typically fragile and unstable. Thus, the gels revert back to their equilibrium states upon removal of the stimuli. Reported, herein, is a new class of solvent programmable polymers (SPPs) based on restricted rotation with the ability to respond and remember their stimuli-induced properties (Scheme 1).