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Title of Journal: Sci China Chem

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Abbravation: Science China Chemistry

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Science China Press

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DOI

10.1002/jlac.18380260106

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1869-1870

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Uranyl oxamate hydrates hydrothermal synthesis c

Authors: Yubo Shu Weisheng Liu
Publish Date: 2016/05/14
Volume: 59, Issue: 6, Pages: 740-745
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Abstract

Presented here are two isostructural uranyl coordination polymers UO2EDOH2O·H2O 1 and UO2BDOH2O·2H2O 2 EDO2=ethylene12dioxamate BDO2=butylene12dioxamate with identical stepwise zigzag chain structure and distinct interchain hydrogen bonding interaction prepared from hydrothermal reaction of DEEDO or DEBDO DEEDO=diethyl ethylene12dioxamate DEBDO=diethyl butylene12dioxamate with uranyl ions The monomeric uranylbased fluorescence emissions of compounds 1 and 2 are redshifted by about 6 and 5 nm respectively compared to that of uranyl nitrate hexahydrate Compound 1 has stronger emission than compound 2 but both their emissions exhibit tripleexponential decay The photophysics of uranyl oxalate trihydrate was also investigated for comparison The selective crystallization of compound 1 in alkaline solution was applied to the sequestration of uranyl ions showing a kinetic preference

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