Fabrication of two-dimensional structures of metal oxide nanocrystals using Si substrate modified with 3,4-Dihydroxyhydrocinnamic acid

Daisuke Hojo, Takanari Togashi, Daisuke Iwasa, Toshihiko Arita, Kimitaka Minami, Seiichi Takami, Tadafumi Adschiri

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Sufficiently high-coverage monolayer structures of cerium oxide nanocrystals modified with decanoic acid, with sizes of ∼9 nm, were fabricated on the surface using a silicon substrate modified with 3,4-dihydroxyhydrocinnamic acid where catechol group lied at the top. By doing this, no further pretreatment for the modified 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 on the catechol-terminated substrate. Catechol-carboxyl group ligand exchange results in high-efficient due to higher affinity of catechol to metal oxide surfaces. This affinity difference enabled to perform this on-site ligand exchange even at room temperature.

Original languageEnglish
Pages (from-to)1862-1869
Number of pages8
JournalChemistry of Materials
Volume22
Issue number5
DOIs
Publication statusPublished - 2010 Mar 9

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Fabrication of two-dimensional structures of metal oxide nanocrystals using Si substrate modified with 3,4-Dihydroxyhydrocinnamic acid'. Together they form a unique fingerprint.

  • Cite this