Abstract
By adjusting pH, two zero-dimensional (0D) Zn(II)-based functional complexes, namely, [Zn(CEbpy)(TPDC)(H2O)4]·3H2O (1) and (CEbpy)2·[Zn(H2O)6](TPDC)·3H2O (2) have been successfully constructed from thiophene-2,5-dicarboxylic acid (H2TPDC) and 1-carboxyethyl-4,4′-bipyridine (CEbpy). Both 1 and 2 display electron transfer (ET)-mediated photochromic behaviors with different photoresponsive rates. Furthermore, the solid-state photo-controlled luminescence of two compounds is also examined at ambient temperature. Appealingly, upon UV illumination, compound 1 possesses potential as an inkless and erasable printing medium. These results provide potential avenues for rational design and synthesis of functional materials that can be used in photochromic devices by modulating pH.
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