Formation of multinuclear metal-terpyridyl complexes covalently bound to carbon substrates

Wataru Kubo, Masashi Nagao, Yoichi Otsuka, Tsutomu Homma, Hirokatsu Miyata

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Multinuclear complexes consisting of metal ions and a bis(terpyridyl) ligand were covalently bound to carbon substrates. The bonding of the complexes is initiated by the bonding of phenylterpyridine (PT) on the substrates using its in-situ-generated diazonium derivative, followed by stepwise coordination of the metal ions and the ligand on it. The bonding of the PT and the formation of the multinuclear complexes were confirmed by XPS, AFM, and CV measurements. The heterogeneous rate constant (k) at the Co complex-substrate interface was evaluated by chronoamperometry (CA). The estimated high k=(2.9-3.6) × 103 s-1) would be attributed to the C-C bond at the interface without interrupting the conjugation. These multinuclear complexes bound to the carbon substrates can facilitate electron transfer from redox species such as enzymes.

Original languageEnglish
Pages (from-to)13340-13343
Number of pages4
JournalLangmuir
Volume25
Issue number23
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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