Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Chemical Society of Japan Award for Creative Work for 2008
Study on Electronic Properties of Composite Clusters toward Nanoscale Functional Advanced Materials
Atsushi Nakajima
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2013 Volume 86 Issue 4 Pages 414-437

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Abstract

Clusters consisting of 10–1000 atoms size-dependently exhibit novel electronic and geometric properties. In particular, composite clusters composed of several elements and/or components provide a promising way for a bottom-up approach for designing functional advanced materials, because the functionality of the composite clusters can be optimized not only by the cluster size but also by their compositions. This account surveys recent investigations of composite clusters focusing on the efforts to create a new functional composite cluster by a fine doping or hybridization based on their size-specific electronic properties. Organometallic clusters and caged clusters are demonstrated as a representative example of designing the functionality of magnetism and electronic state structures. In order to create functional nanomaterials, furthermore, a fine controlling methodology of the soft-landing technique has been developed to fix the composite clusters onto a surface decorated with a self-assembled monolayer. The embedded isolation mechanism on the substrate is discussed form the viewpoint of self-assembly phenomena with the molecular ordering of σ–σ interaction, and also the electronic structures characterized by molecular ordering of π–π interaction is intrinsically revealed by molecular clusters of π-conjugate polyacenes as a model for self-assembled aggregates.

Composite clusters composed of several elements and/or components provide a promising way for a bottom-up approach for designing functional advanced materials. This account surveys recent investigations of composite clusters focusing on the efforts to create organometallic clusters and caged clusters with the development of a soft-landing technique with a self-assembled monolayer. Self-assembly phenomena are also discussed using molecular clusters of π-conjugate polyacenes. Fullsize Image
 
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© 2013 The Chemical Society of Japan
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