Electrochemical Stability of Self-Assembled Alkylphosphate Monolayers on Conducting Metal Oxides

Yildirim O., Yilmaz M. D., Reinhoudt D. N., Blank D. H. A., Rijnders G., Huskens J.

LANGMUIR, cilt.27, sa.16, ss.9890-9894, 2011 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 16
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1021/la200925v
  • Dergi Adı: LANGMUIR
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.9890-9894
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

Alkylphosphate self-assembled monolayers (SAMs) were prepared on Nb-doped SrTiO3 (Nb-STO) conducting metal oxide substrates. Unlike thiols on gold, the alkylphosphate SAMs on Nb-STO exhibited an electrochemical stability over a wide voltage range from -2 to 2 V. Cyclic voltammetry showed that the SAM modification inhibited the electrochemical activity of the underlying conducting substrate with an efficiency dependent on the chain length. Impedance spectroscopy showed that SAM-modified Nb-STO substrates have a significantly higher resistance than bare substrates.