Multifunctional Entropy-Driven Supramolecular Glasses Fei Nie, Jiayi Guo, and Dongpeng Yan prepared a supramolecular glass whose main components are complexes formed by urea, biuret, cyanuric acid, and zinc ions. The glass exhibits wavelength-dependent tunable afterglow color under different excitation wavelengths, varying from blue to green and then to yellow. More details can be found in the Research Article (DOI: 10.1002/adma.75050).