One‐Step Synthesis of Closed‐Loop Recyclable and Thermally Superinsulating Polyhexahydrotriazine Aerogels (Adv. Mater. 1/2025)

Polyhexahydrotriazine Aerogels In article number 2412502 by Željko Tomović and co-workers, a simple one-step synthesis of closed-loop recyclable polyhexahydrotriazine (PHT) aerogels is presented, which are made from commercially available aromatic amines and paraformaldehyde. These PHT aerogels display thermal superinsulation, pronounced thermal stability, great mechanical performance, and intrinsic hydrophobicity. Furthermore, PHT aerogels can be depolymerized under acidic aqueous conditions, allowing the monomers to be reused to prepare fresh aerogels.