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Giant regular polyhedra from calixarene carboxylates and uranyl.

Abstract：

:Self-assembly of large multi-component systems is a common strategy for the bottom-up construction of discrete, well-defined, nanoscopic-sized cages. Icosahedral or pseudospherical viral capsids, built up from hundreds of identical proteins, constitute typical examples of the complexity attained by biological self-assembly. Chemical versions of the so-called 5 Platonic regular or 13 Archimedean semi-regular polyhedra are usually assembled combining molecular platforms with metals with commensurate coordination spheres. Here we report novel, self-assembled cages, using the conical-shaped carboxylic acid derivatives of calix[4]arene and calix[5]arene as ligands, and the uranyl cation UO(2)2+ as a metallic counterpart, which coordinates with three carboxylates at the equatorial plane, giving rise to hexagonal bipyramidal architectures. As a result, octahedral and icosahedral anionic metallocages of nanoscopic dimensions are formed with an unusually small number of components.

journal_name

Nat Commun

journal_title

Nature communications

authors

Pasquale S,Sattin S,Escudero-Adán EC,Martínez-Belmonte M,de Mendoza J

doi

10.1038/ncomms1793

subject

Has Abstract

pub_date

2012-04-17 00:00:00

pages

785

issn

2041-1723

pii

ncomms1793

journal_volume

3

pub_type

杂志文章

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