High‐performance and recyclable high valence oxides of ruthenium catalyst had been released safely from commercially available ruthenium carbon catalyst in situ. They could selectively oxidize C=C bonds to corresponding aldehydes or ketones in 78%–99% yields and C ≡ C bonds to α‐diketones in 93%–99% yields. The cheap availability, recyclability, safety, and low toxicity of ruthenium carbon might endow the catalyst with great potential in industrial scale unsaturated bond oxidation cleavage applications.

A high‐performance catalyst, RuO4@C, was safely generated in situ from a safety mask Ru@C, which was recyclable and commercially available. The catalyst could selectively oxidize thioethers to sulfones in 95%–99% yields and alkynyl sulfurs to alkynylsulfones in 93%–98% yields. This safe, non‐toxic, inexpensive, and readily available catalyst is potentially promising for industrial applications in the production of sulfones from sulfur oxidation.

Because of low immunogenicity, ease of modification, and inherent biosafety, peptides have been well recognized as vehicles to deliver therapeutic agents to targeted regions with improved pharmacokinetic characteristics. Enzyme-responsive self-assembled peptides (ERSAPs) show superiority over their naive forms due to their enhanced targeting efficacy and long-retention property. In this review, we have summarized recent advances in the therapeutic application of ERSAPs, mainly focusing on their self-therapeutic properties and potential as vehicles to deliver different drugs.