Silk fibroin-based hydrogels with low hysteresis, self-adhesion, and tunable ionic conductivity for wearable devices.

Silk Fibroin (SF) hydrogels are easy to functionalize and possess biocompatibility, making them highly promising for the development of flexible electronic devices and wearable equipment. However, fabricating SF-based hydrogels with multiple functions such as low hysteresis, self-adhesion, and high elasticity, while constructing flexible wearable electronic devices with high sensitivity and fidelity, remains a challenge to date. To address these issues, this work reports a one-step preparation of a fully polymer-based triple-network hydrogel through precursor solution pH pre-regulation, with polyacrylamide (PAM) as a brittle network, methyl cellulose (MC) as a tough network, and SF as a zwitterionic macromolecule.

Layered Hybrid Zincophosphites for Room Temperature Phosphorescent Emission.

Two layered zincophosphites constructed from an emissive linker molecule were prepared. The ligand connects zincophosphite chains or clusters to form two distinct two-dimensional hybrid frameworks in two compounds. The coordinating effect of an organic ligand to Zn centers increases the rigidity and results in room temperature phosphorescence.

An organic-inorganic hybrid zinc phosphite framework with room temperature phosphorescence.

A novel room temperature phosphorescent material has been developed by the use of luminescent organic rigid poly-imidazole moieties coordinating to a zinc phosphite framework, which shows excellent thermal and mechanical stability.