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Nanostructures in Uranium Oxocompounds

Published online by Cambridge University Press:  26 February 2011

Sergey V. Krivovichev ,
Ivan G. Tananaev  and
Boris F Myasoedov
Sergey V. Krivovichev
Affiliation:
skrivovi@mail.ru, St.Petersburg State University, Crystallography, University Emb. 7/9, St.Petersburg, N/A, 199034, Russian Federation, 7(812)3289647, 7(812)3284418
Ivan G. Tananaev
Affiliation:
geokhi@mail.ru, Instute of Physical Chemistry RAS, Russian Federation
Boris F Myasoedov
Affiliation:
bmyas@pran.ru, Institute of Physical Chemistry RAS, Russian Federation
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Abstract

Examples of uranium-oxide-based nanostructures are considered, including 2D organic-inorganic nanocomposites and nanotubules. In nanocomposites, interfacial interactions between organic and inorganic substructures can be studied by charge-density matching principle. Application of this principle to uranyl compounds requires special attention since surface area of uranyl-based 2D units is higher than that of other inorganic oxysalts units (i.e. metal phosphates). The charge-density matching principle is, however, observed either through tail interdigitation (for long-chain monoamines) or incorporation of acid-water interlayers into organic substructure (for long-chain diamines). In some compounds, protonated amine molecules form cylindrical micelles that involves self-assembly governed by competing hydrophobic/hydrophillic interactions. The flexible inorganic complexes present in the reaction mixture could then form around cylindrical micelles to produce highly undulated 2D sheets or nanotubules.

Keywords

actinidenanostructurecrystallographic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 893: Symposium JJ – Actinides 2005 – Basic Science, Applications and Technology , 2005 , 0893-JJ09-05
Copyright
Copyright © Materials Research Society 2006

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