Potential Modulation Reflectance of Self-Assembled Naphthoquinone Monolayers on Gold Electrodes

• OHTSUKA Toshiaki

  Graduate School of Engineering, Hokkaido University

• NAGATA Morio

  Graduate School of Engineering, Hokkaido University

• KOMORI Hirokiyo

  Department of Applied Chemistry, Nagoya Institute of Technology

• NANGO Mamoru

  Department of Applied Chemistry, Nagoya Institute of Technology

抄録

Potential modulation reflectance (PMR) was measured as a function of potential and wavelength of light for self-assembled monolayers (SAMs) formed from dialkyl disulfide-linked naphthoquinones with different spacer alkyl chain on a gold electrode. On the cyclic voltammogram a redox reaction between naphthoquinone and naphtho-hydroquinone in the SAMs is clearly observed. The oxidation and reduction peak currents are strongly dependent on the spacer alkyl chain length. On the PMR spectra two peaks are observed: one at 470 nm wavelength originates from the redox change between the naphthoquinone and naphtho-hydroquinone and the other peak at 530 nm wavelength may be due to formation of a charge transfer complex between naphthoquinone and naphtho-hydroquinone. From the phase retardations of PMR and differential capacitance, it is supposed that relatively slow processes like a configuration change of the naphthoquinone derivative accompanied by proton transfer are included in the redox reaction.

収録刊行物

• Electrochemistry

  Electrochemistry 67 (12), 1184-1186, 1999-12-05

  公益社団法人　電気化学会

キーワード

• Self-assembled Monolayer
• Naphthoquinone
• Potential Modulation Reflectance

詳細情報

• CRID: 1390282752369404800
• NII論文ID: 10004275328
• NII書誌ID: AN00151637
• DOI: 10.5796/electrochemistry.67.1184
• ISSN: 21862451
• ISSN: 13443542
• NDL書誌ID: 4927579
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4927579
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/67/12/67_1184/_pdf
• 本文言語コード: en
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