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. 2023 Nov 6;14:7139. doi: 10.1038/s41467-023-43013-8

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Fig. 2 — A Synthesis of chalcogen bond-containing dithienylethene photoswitches (E isomer is shown). B Crystal structures of E-4, Z-4, and Z-6, with the distances of chalcogen bonding listed. Displacement ellipsoids are drawn at the 50% probability level, with hydrogen atoms as spheres of arbitrary radii.