Breakthroughs in membrane engineering and nanoparticle formulation are set to elevate drug delivery and separation technologies. Interfacial polymer cross-linking enables ultrathin membranes with angstrom-scale selectivity and high ion permeability, ideal for energy storage and purification. Xi’an Jiaotong-Liverpool University researchers developed a protein-polymer coassembly nanoparticle combining PLGA with albumin, achieving ultrahigh drug loading capacity and stability for chemotherapy delivery. Such innovations promise improved therapeutic efficacy and sustainability across biomedical and environmental applications.