1273 Color-tunable upconversion-emission switch based on cocrystal-to-cocrystal transformation, (Y. Wang, H. Wu, L. O. Jones, M. A. Mosquera, C. L. Stern, G. C. Schatz, J. F. Stoddart), J. Am. Chem. Soc. 2023, 145, 1855–1865. Full Text