Photocontrolled Healable Structural Color Hydrogels

Abstract

Structural color hydrogels with healable capability are of great significance in many fields, however the controllability of these materials still needs optimizing. Thus, this work presents a healable structural color hydrogel with photocontrolling properties. The component parts of the hydrogel are a graphene oxide (GO) integrated inverse opal hydrogel scaffold and a hydrogel filler with reversible phase transition. The inverse opal scaffold provides stable photonic crystal structure and the hydrogel filler is the foundation of healing. Taking advantage of the prominent photothermal conversion efficiency of GO, the healable structural color material is imparted with photocontrolled properties. It is found that the structural color hydrogel shaped in complex patterns can heal under near‐infrared (NIR) irradiation. These features indicate that the optical controllable healable structural color hydrogel can be employed in various applications, such as constructing complex objects, repairing tissues, and so on.

Fatigue‐Resistant, Notch‐Insensitive Zwitterionic Polymer Hydrogels with High Self‐Healing Ability

“…These conductive materials include ionic salts, conductive polymers, graphene and metal, etc. Among them, graphene and its derivatives have long been used in the preparation of high‐performance hydrogels due to their excellent characteristics . Here we prepared HDS/Reduced Graphene Oxide (RGO) composite by polymerizing H 2 D 4 S 4 monomers in the presence of RGO aerogel (Figure S3).…”

Fabrication and Mechanical Properties of Engineered Protein‐Based Adhesives and Fibers

“…The formation of Schiff base formation and the existence of dodecyl tails in the system results in the outstanding tissue adhesion, blood cell coagulation and hemostasis of this multifunctional hybrid hydrogel. Moreover, the same group also realized the photocontrol healable structural color hydrogels which consist of graphene oxide (GO) integrated inverse opal hydrogel scaffold and a hydrogel filler with reversible phase transition . Those structural color hydrogels exhibited their potential applications in constructing novel optical or biomedical objects.…”

Bioinspired structural color nanocomposites with healable capability

“…Currently, by using healable polymers, three strategies have been mainly adopted to obtain the structural color nanocomposites with healable capability (Fig. 1): (1) self-assembly of colloidal particles tethered with polymer chains with dynamic reversible connections; 76 (2) introduction of healable polymeric materials (i.e., polymers or polymerizable materials) into preformed periodic nanostructures (i.e., ordered opal structure and inverse opal scaffold structure); 60,65,[77][78][79][80][81] (3) self-assembly of colloidal particles with healable polymeric materials. 58,59,61,82,83 These dynamic reversible bonds in the structural color nanocomposites endow the materials with healable capability.…”