Pyrazolines and their pyrazole congeners are important heterocyclic building blocks with numerous applications in the fine chemical industries. However, traditional routes towards these entities based on multistep syntheses generating substantial amounts of waste. Here we report an alternative approach using UV-light to convert tetrazoles pyrazolines via a reagent-free photo-click strategy. Thi...

A supramolecular hydrogel formed by dipeptide Gly-Ala linked with biphenyl-substituted tetrazole serves not only as a 3D matrix for live cells, but also as a carrier to deliver microRNA into the encapsulated cells.