%0 Journal Article %T Exploring crystal structure-physical property relationships with pressure. %A Allan DR %J IUCrJ %V 11 %N 0 %D 2024 Jul 1 %M 38958012 %F 5.588 %R 10.1107/S205225252400602X %X From its conception, X-ray crystallography has provided a unique understanding of the structure, bonding and electronic state of materials, which, in turn, unlocks a means of examining the properties and function of crystalline systems. Using state-of-the-art single-crystal X-ray diffraction, along with UV-Vis spectroscopy and DFT calculations, Zwolenik et al. [(2024). IUCrJ, 11, 519-527] have provided a comprehensive study of the structure-optical property relationship of 1,3-diacetylpyrene with methodologies that are increasingly accessible to non-specialist laboratories.