A Theranostic Probe for Promotion of Skin Wound Healing by Exudate-Triggered H2S Release with Self-Monitoring Ability.

Hydrogen sulfide (H2S) as an endogenous gasotransmitter plays a critical role in promotion of wound healing. However, the current H2S release system lacks the in situ monitoring ability, which may lead to insufficient or overdose release of H2S and serious side effects. Herein, we develop a self-monitoring theranostic probe TPATCF-S, which can quickly release H2S under water stimuli associated with a self-monitoring ability by a color change from colorless to deep blue. With a full thickness dermal defect as a model, the TPATCF-S absorbed on alginate dressings can be used for wound exudate-responsive release of H2S to efficiently promote skin wound healing.