American Chemical Society
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A d‑Methionine-Bonded Nanosized Heteropolyoxotungstate with Photocoloration

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journal contribution
posted on 2023-08-04, 11:34 authored by Kangting Zheng, Yunfan Zhang, Miao Zhang, Ruiyang Wang, Pengtao Ma, Jingping Wang, Jingyang Niu
A d-methionine-bonded nanosized arsenotungstate, Ba9K10H6­[{As2W19O67­(H2O)}2­{AsW9O33}2­{W3O6­(H2O)­(d-Met)}2­{W2O4(OH)(d-Met)}]·60H2O [1; d-Met = d-methionine (C5H11NO2S)], is constructed without the use of lanthanide ions. The polyanion of 1 contains two {As2W19O67(H2O)}14– building blocks and two {B-β-AsW9O33}9– subunits, integrated together with a {W2O4(OH)(d-Met)}2+ and two {W3O6(H2O)(d-Met)}5+ subclusters. Interestingly, 1 displays a highly reversible photocoloration property with a half-life (t1/2) time measured as about 0.793 min.