Theoretical and experimental study demonstrates solubility changes in diarylethene due to light exposure, indicating significant interactions between crystal structure and solvent.
The Cover Feature illustrates the light-controlled solubility change of diarylethene derivatives. The shallow upstream flow represents the closed-ring form, characterized by low solubility, whereas the deeper downstream pool represents the open-ring form with higher solubility. The waterfall symbolizes the Gibbs free energy difference between the two photoisomers. Arrows indicating ultraviolet and visible light depict the reversible photoisomerization process between the open- and closed-ring forms. The study by J. Shen, S. Nakamura and co-workers (see Research Article 10.1002/cptc.202500351) demonstrates that both crystal packing stability and solute–solvent interactions play crucial roles in governing the pronounced change in solubility.
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Nakamura et al. (2026) studied this question.
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