Dr. Changan Li is a chemist specializing in crystal engineering, supramolecular chemistry, organic solid-state photochemistry, and DNA nanotechnology. He received his Ph.D. in Chemistry from the University of Iowa, where he studied light-controlled solid-state reactions in cocrystals, publishing in Angewandte Chemie, Chemistry – A European Journal, and Chemical Communications. He is currently a postdoctoral researcher at Columbia University, working on DNA nanomaterials and programmable self-assembly, including light-controlled DNA–nanoparticle superlattices assembly. Dr. Li has authored 15+ peer-reviewed publications (eight as first author), several featured as cover articles. His awards include the A. Lynn Anderson Outstanding Graduate Research Award. His long-term vision is to develop light-programmable, sustainable materials platforms that enable next-generation molecular synthesis, responsive devices, and biomedical applications.