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Synthesis of inorganic nanophase materials in supramolecular protein cages


Meldrum, FC and Wade, VJ and Nimmo, DL and Heywood, BR and Mann, S, Synthesis of inorganic nanophase materials in supramolecular protein cages, Nature, 349, (6311) pp. 684-687. ISSN 0028-0836 (1991) [Refereed Article]

Copyright Statement

1991 Nature Publishing Group

DOI: doi:10.1038/349684a0


There is currently great interest in the synthesis of inorganic materials of nanometre dimensions. The small size of these particles endows them with unusual structural and optical properties that may find application in catalysis and electro-optical devices. Such materials may also prove valuable as precursor phases to strong ceramics. Many approaches to the synthesis of these materials have focused on constraining the reaction environment through the use of surface-bound organic groups, polymers, porous glasses, zeolites, phospholipid vesicles ' and reverse micelles. Nanometre-sized particles may also be produced in vivo by microorganisms. Here we describe a novel synthetic route based on the use of a supramolecular protein structure as a reaction cage in which to form inorganic phases. We show that the iron-storage protein ferritin can be used to generate nanometre-sized iron sulphide particles by in situ reaction of the iron oxide core of the native ferritin. Discrete nanoscale particles of manganese and uranium oxo-species can also be formed in the protein cavity. Our results highlight the potential of adapting natural biomineralization processes to problems in materials science, and suggest that the use of biological molecules and their synthetic analogues in mediating solid-state reactions constitutes a promising approach to nanophase engineering.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic chemistry
Research Field:Bioinorganic chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Heywood, BR (Professor Brigid Heywood)
ID Code:104366
Year Published:1991
Web of Science® Times Cited:419
Deposited By:Research Division
Deposited On:2015-11-10
Last Modified:2015-12-22

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