Robust, adaptive, sustainable: we develop noncovalent nanomaterials that can be as tough as covalent ones (such as polymers), and yet can be easily assembled and disassembled, enabling simple fabrication and recycling. Being bio-inspired, we employ water as a major material component and/or as an assembly medium, leading to unique structures and unparalleled materials strength. Regarding materials’ function we are interested in filtration membranes, recyclable supramolecular plastic materials, and solar energy conversion.