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Issue 3, 2011
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Ordered metal nanostructure self-assembly using metal–organic frameworks as templates

Benjamin W. Jacobs,a  Ronald J. T. Houk,a  Mitchell R. Anstey,a  Stephen D. House,b  Ian M. Robertson,*c  A. Alec Talinc  and  Mark D. Allendorf*a 
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* Corresponding authors

a Sandia National Laboratories, Mail Stop 9291, Livermore, USA
E-mail: mdallen@sandia.gov
Fax: +001 925-294-3282
Tel: +001 925-294-2895

b Material Science and Engineering University of Illinois, 1304 W. Green St, Urbana, USA

c Center for Nanoscience and Technology, National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, USA

Abstract

We demonstrate that nanoporous metal–organic frameworks (MOFs) loaded with silver can serve as templates for ordered nanostructures comprising either silver nanoparticles or nanowires. Exposure to an electron beam breaks down the template, leading to rapid silver coalescence. The geometric and chemical structure of the MOF, as well as the extent of metal loading, determine whether nanoparticles or nanowires are formed and define their size and orientation. Nanowires with diameters as small as 4 nm and aspect ratios >125 can be formed, overcoming the limitations of existing templating methods. This method is relatively simple, compatible with many materials, and proceeds by a distinct template-directed growth mechanism. Since MOFs offer an unprecedented level of synthetic flexibility, combined with highly uniform porosity as a result of their crystalline structure, this approach opens a promising new route for synthesis of self-assembled, ordered nanostructures.

Graphical abstract: Ordered metal nanostructure self-assembly using metal–organic frameworks as templates

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Publication details

The article was received on 18 Jul 2010, accepted on 23 Nov 2010 and first published on 13 Dec 2010


Article type: Edge Article
DOI: 10.1039/C0SC00377H
Citation: Chem. Sci., 2011,2, 411-416
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    Ordered metal nanostructure self-assembly using metal–organic frameworks as templates

    B. W. Jacobs, R. J. T. Houk, M. R. Anstey, S. D. House, I. M. Robertson, A. A. Talin and M. D. Allendorf, Chem. Sci., 2011, 2, 411
    DOI: 10.1039/C0SC00377H

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