insight into the self-assembly evolution of ABA-type block copolymers in water during the gelation process using infrared spectroscopy and near-infrared spectroscopy.

As a kind of thermo-responsive hydrogel, amphiphilic block copolymers are widely investigated. However, the molecular mechanism of their structural change during the gelation process is still limited. Here, a well-controlled triblock copolymer poly(,-dimethylacrylamide)--poly(diacetone acrylamide)--poly(,-dimethylacrylamide) (PDMAA--PDAAM--PDMAA) was synthesized.