Unveiling the transient template in the self-assembly of a molecular oxide nanowheel

Miras, H.N. , Cooper, G.J.T., Long, D.-L., Bogge, H., Muller, A., Streb, C. and Cronin, L. (2010) Unveiling the transient template in the self-assembly of a molecular oxide nanowheel. Science, 327(5961), pp. 72-74. (doi:10.1126/science.1181735)

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Abstract

Self-assembly has proven a powerful means of preparing structurally intricate nanomaterials, but the mechanism is often masked by the common one-pot mixing procedure. We employed a flow system to study the steps underlying assembly of a previously characterized molybdenum oxide wheel 3.6 nanometers in diameter. We observed crystallization of an intermediate structure in which a central {Mo<sub>36</sub>} cluster appears to template the assembly of the surrounding {Mo<sub>150</sub>} wheel. The transient nature of the template is demonstrated by its ejection after the wheel is reduced to its final electronic state. The template’s role in the self-assembly mechanism is further confirmed by the deliberate addition of the template to the reaction mixture, which greatly accelerates the assembly time of the {Mo<sub>150</sub>} wheel and increases the yield.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Moiras, Dr Haralampos and Long, Dr Deliang and Cooper, Dr Geoff and Cronin, Professor Lee and Streb, Mr Carsten
Authors: Miras, H.N., Cooper, G.J.T., Long, D.-L., Bogge, H., Muller, A., Streb, C., and Cronin, L.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Science
Publisher:American Association for the Advancement of Science
ISSN:0036-8075
ISSN (Online):1095-9203

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
461871Evolvable Process Design.Leroy CroninEngineering & Physical Sciences Research Council (EPSRC)EP/F016360/1Chemistry