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Fabrication of the Cerium Oxide Nanocrystal Film with Heterogeneous Ligand Structures

Published online by Cambridge University Press:  31 January 2011

Daisuke Hojo ,
Takanari Togashi  and
Tadafumi Adschiri
Daisuke Hojo
Affiliation:
dhojo@tagen.tohoku.ac.jp, Tohoku University, Advanced Institute for Materials Research, Sendai, Japan
Takanari Togashi
Affiliation:
togashi@tagen.tohoku.ac.jp, Tohoku University, Advanced Institute for Materials Research, Sendai, Japan
Tadafumi Adschiri
Affiliation:
ajiri@tagen.tohoku.ac.jp, Tohoku University, Advanced Institute for Materials Research, Sendai, Miyagi, Japan
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Abstract

Sufficiently dense films of cerium oxide nanocrystals modified with decanoic acid, with sizes of ˜9 nm, were fabricated on the surface by modifying a silicon substrate with 3,4-dihydroxyhydrocinnamic acid, where catechol group lied at the top. By doing this, no further pretreatment for the modified cerium oxide nanocrystals is required to fix them chemically on the substrate. Selective adhesion between nanocyrstals and the substrate for the two-dimensional assembly can be attributed to the chemical bonding formed by on-site ligand exchange between carboxyl and catechol groups.

Keywords

self-assemblyabsorptionsurface chemistry
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1207: Symposium N – Colloidal Nanoparticles for Electronic Applications — Light Emission, Detection, Photovoltaics and Transport , 2009 , 1207-N07-30
Copyright
Copyright © Materials Research Society 2010

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