Dimeric Organic-Inorganic Hybrid Zr-Substituted Antimonotungstate-Featured Photochromic Responses
Miao Zhang1, Lihua Liu1, Yizhen Song1
1Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, China.
Abstract:
Photochromic materials are increasingly attracting attention for their potential applications in smart devices. Here, a novel organic-inorganic hybrid Zr-containing polyoxometalate [H2N(CH3)2]10H8[Zr(DL-tart)2(SbW17ZrO58)2]·36H2O (DL-tartH4 = dl-Tartaric Acid) (1) was synthesized. The dimeric polyanion of 1 contains two Dawson-like {SbW17ZrO58}7- subunits bridged by one {Zr(DL-tart)2}4- connector. Interestingly, compound 1 exhibits a rapid photochromic response with a half-life (t1/2) of 6.62 s, good reversibility, and an easy fading process in an air environment. Notably, compound 1 also retains its photochromic behavior upon exposure to visible light irradiation.
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