Jump to main content
Jump to site search

Issue 6, 2011
Previous Article Next Article

In situ surface-enhanced Raman scattering and X-ray photoelectron spectroscopic investigation of coenzyme Q10 on silver electrode

Author affiliations

Abstract

In this study, coenzyme Q10 (CoQ10) has been investigated by in situ near-infrared Fourier transform surface-enhanced Raman scattering (NIR-FT-SERS) spectroelectrochemistry and angle-resolved X-ray photoelectron spectroscopy (AR-XPS) on silver surface. The surface adsorption behavior of the coenzyme Q10 radical intermediate could be monitored by potential-dependent SERS technique. At the applied potential lower than −0.30 V vs.SCE, the radical intermediate CoQ10H˙ stands perpendicularly on the silver surface with both oxygen atoms of the aromatic ring and isoprenoid side chains. When the applied potential is more positive than −0.30 V vs.SCE or at open circuit potential, the quinone ring (benzene ring) of reduced form of coenzyme Q10 (CoQ10H2) adopts a face-on surface configuration on the surface. The responsible mechanism for the potential-dependent SERS spectra is presented. Moreover, the adsorption conformation of CoQ10 has been further confirmed by AR-XPS at the silver surface.

Graphical abstract: In situ surface-enhanced Raman scattering and X-ray photoelectron spectroscopic investigation of coenzyme Q10 on silver electrode

Back to tab navigation

Supplementary files

Publication details

The article was received on 07 Aug 2010, accepted on 03 Nov 2010 and first published on 08 Dec 2010


Article type: Paper
DOI: 10.1039/C0CP01449D
Citation: Phys. Chem. Chem. Phys., 2011,13, 2259-2265
  •   Request permissions

    In situ surface-enhanced Raman scattering and X-ray photoelectron spectroscopic investigation of coenzyme Q10 on silver electrode

    D. Li, D. Li, J. S. Fossey and Y. Long, Phys. Chem. Chem. Phys., 2011, 13, 2259
    DOI: 10.1039/C0CP01449D

Search articles by author

Spotlight

Advertisements