A simple multifunctional PNIPAM-GO/PANI hydrogel preparation strategy and its application in dye adsorption and infrared switching

Preparation of multifunctional hydrogels with pore channels using agarose sacrificial templates and its applications

“…It is worth mentioning that in previous studies, we have studied the use of PANI for anionic dye adsorption. The ch‐PNIPAM/PEG/PANI has the function of selective adsorption and reuse, and the adsorption rate can be increased by heating the hydrogel and then adsorption at room temperature 27 . High conductivity and excellent stability also provide a better platform for hydrogel adsorption sensors.…”

“…Usually, monomers or other dopants that play a decisive role in hydrogel performance are doped into hydrogels by chemical crosslinking or physical bonding. These dopants will enhance some properties of the hydrogels while weakening the stimuli‐responsive properties of hydrogels 25‐27 . For example, nanoparticle graphene oxide was introduced into hydrogel by hydrogen bonding, although the mechanical properties of smart hydrogels were enhanced and the absorption efficiency of infrared light was improved, the temperature response volume swelling shrinkage ratio of hydrogels was also reduced.…”

Fast-response photothermal bilayer actuator based on poly(N-isopropylacrylamide)–graphene oxide–hydroxyethyl methacrylate/polydimethylsiloxane

“…However, merely combining photothermal material with thermally responsive hydrogel only enhances the shrinkage deformation of the thermally responsive hydrogel itself under light radiation, but cannot achieve the practical functions such as bending. For example, Yu 32 et al combined temperature-sensitive hydrogel, GO, and polyaniline (PANI) to prepare an infrared optical switch taking advantage of the photothermal shrinkage and electrical conductivity of the monolayer hydrogel. The switch of the circuit was controlled by controlling the contraction and expansion of the hydrogel.…”