Details

Autor(en) / Beteiligte

• Wang, Hai-Ying
• Zheng, Xiu-Ying
• Long, La-Sheng
• Kong, Xiang-Jian
• Zheng, Lan-Sun

Titel

Sandwich-Type Uranyl Phosphate–Polyoxometalate Cluster Exhibiting Strong Luminescence

Ist Teil von

• Inorganic chemistry, 2021-05, Vol.60 (9), p.6790-6795

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A pure inorganic uranyl phosphate–polyoxometalate of Na17{Na@[(SbW9O33)2(UO2)6(PO3OH)6]}·xH2O (abbreviated as Na@U 6 P 6 , with x ≈ 46) featuring a sandwich-type structure was prepared using Keggin-type trilacunary [α-B-SbW9O33]9– units as building blocks, which were formed in situ by SbCl3 and Na2WO4·2H2O. Crystal structural analysis showed that six UO2 2+ cations and six PO3OH2– anions generated a wheel-like cluster unit with a Na+ center ([Na@(UO2)6(PO3OH)6]+) that is stabilized by two [α-B-SbW9O33]9– units. Na@U 6 P 6 displayed a solid-state photoluminescence quantum yield of 33% at 300 K. The temperature-dependent fluorescence emission spectra showed that Na@U 6 P 6 has temperature-sensitive fluorescence in which its emission intensity decreased by 77% as the temperature increased from 200 to 300 K. These results suggest that such uranyl phosphate–polyoxometalate clusters could serve as potential temperature-sensitive molecular materials.