Endowing molecular motions in the solid materials

Building macro continuous materials that play an important role in our daily lives directly from powder is in line with the development needs of green chemistry. Powders or particles tend to spontaneously aggregate and fuse to reduce the interfacial energy of the system, but compared to solutions or melts, the molecular motion ability in the solid phase is significantly limited. Inspired by the agglomeration of powder and kneading dough, the introduction of a small amount of water and pressure has enabled the preparation of continuous self-supporting materials based on surfactants, and even the construction of ordered molecular membranes through solid-phase molecular self-assembly. This article summarizes the recent work on the construction of macroscopic materials using molecular motion in solid phase, and mainly introduces its principles, self-healing properties, and application directions, including strain sensing, oil absorption, humidity response, circularly polarized luminescence, etc., and looks forward to the future development space.