Fluorescent Uranyl Ion Lidded Cucurbit[5]uril Capsule

A novel fluorescent complex {(UO2)2(CB5)}(NO3)4·4HNO3.3H2O (U2CB5) is obtained from cucurbit[5]uril (CB5) and uranyl nitrate under ambient temperature conditions. The crystal structure revealed that two uranyl ions are coordinated to the two open portals of CB5 giving a closed molecular capsule, whi...

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Bibliographic Details
Published in:Inorganic chemistry Vol. 51; no. 1; pp. 267 - 273
Main Authors: Kushwaha, S, Rao, Srinivas A, Sudhakar, Padmaja P
Format: Journal Article
Language:English
Published: United States American Chemical Society 02-01-2012
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Summary:A novel fluorescent complex {(UO2)2(CB5)}(NO3)4·4HNO3.3H2O (U2CB5) is obtained from cucurbit[5]uril (CB5) and uranyl nitrate under ambient temperature conditions. The crystal structure revealed that two uranyl ions are coordinated to the two open portals of CB5 giving a closed molecular capsule, which further connected through CB5 molecules to give two-dimensional frameworks. The U2CB5 complex was further investigated by NMR, FTIR and TGA techniques. The Fluorescence of uranyl ion was found to be enhanced due to complexation with cucurbituril.
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ISSN:0020-1669
1520-510X
DOI:10.1021/ic201641g