Robust, adaptive, sustainable: we develop self-assembled nanomaterials prone to simple fabrication, biodegradability, and recycling. This is based on fundamental insights into crystallization mechanisms leading to control over (nano)crystallization of small molecules and polymers, with a focus on creating novel biodegradable plastics. We employ state-of-the art electron microscopy to obtain structural insights and develop new imaging methodologies for beam-sensitive materials. We also work on self-assembled electrode materials for batteries, supercapacitors, transparent electrodes and actuators.