Study on electronic properties of composite clusters toward nanoscale functional advanced materials

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Abstract

Clusters consisting of 101000 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 -conjugate polyacenes as a model for self-assembled aggregates.

Original languageEnglish
Pages (from-to)414-437
Number of pages24
JournalBulletin of the Chemical Society of Japan
Volume86
Issue number4
DOIs
Publication statusPublished - 2013

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Electronic properties
Composite materials
Aromatic polymers
Magnetism
Electronic states
Self assembled monolayers
Organometallics
Landing
Nanostructured materials
Self assembly
Electronic structure
Doping (additives)
Atoms
Substrates
Chemical analysis

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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abstract = "Clusters consisting of 101000 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 -conjugate polyacenes as a model for self-assembled aggregates.",
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