Particle metal interactions - a raman and electrochemical study of a compacted electrode of copper phthalocyanine and silver metal

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Abstract

Electrodes consisting of a compacted mixture of powders of silver metal and copper phthalocyanine (CuPc) have been used to study the interaction between small pigment particles and a metal surface using resonance Raman spectroscopy as a probe of in situ changes. The purpose of this present paper is to explore the condition required to produce optimum enhancement.Cycling in acid sulphate or nitrate electrolytes with a sufficiently positive voltage to release silver(I) ions resulted in the formation of a thin layer of CuPc particles spread out on the metal surface. The layer formed produced an improvement in Raman scattering from CuPc. From the resonance profile it was clear that there was a significant charge transfer interaction with the metal surface. The relative intensities of the peaks in the Raman spectra are dependent on potential. As well as the possible use of such electrodes in chemistry, particle metal layers of this type provide a different starting point for studies of the surface enhanced resonance Raman effect emphasising the electromagnetic contribution rather than the chemical one.
LanguageEnglish
Pages3595-3708
Number of pages113
JournalJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
Volume85
Issue number11
DOIs
Publication statusPublished - Nov 1989

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Silver
Metals
Electrodes
Raman scattering
Pigments
Nitrates
Powders
Electrolytes
Sulfates
Raman spectroscopy
Charge transfer
copper phthalocyanine
Ions
Acids
Electric potential

Keywords

  • silver metal
  • copper phthalocyanine
  • CuPc
  • small pigment particles
  • metal surface
  • resonance Raman spectroscopy

Cite this

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title = "Particle metal interactions - a raman and electrochemical study of a compacted electrode of copper phthalocyanine and silver metal",
abstract = "Electrodes consisting of a compacted mixture of powders of silver metal and copper phthalocyanine (CuPc) have been used to study the interaction between small pigment particles and a metal surface using resonance Raman spectroscopy as a probe of in situ changes. The purpose of this present paper is to explore the condition required to produce optimum enhancement.Cycling in acid sulphate or nitrate electrolytes with a sufficiently positive voltage to release silver(I) ions resulted in the formation of a thin layer of CuPc particles spread out on the metal surface. The layer formed produced an improvement in Raman scattering from CuPc. From the resonance profile it was clear that there was a significant charge transfer interaction with the metal surface. The relative intensities of the peaks in the Raman spectra are dependent on potential. As well as the possible use of such electrodes in chemistry, particle metal layers of this type provide a different starting point for studies of the surface enhanced resonance Raman effect emphasising the electromagnetic contribution rather than the chemical one.",
keywords = "silver metal, copper phthalocyanine, CuPc, small pigment particles, metal surface, resonance Raman spectroscopy",
author = "A.J. Bovill and A.A. McConnell and W.E. Smith",
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T1 - Particle metal interactions - a raman and electrochemical study of a compacted electrode of copper phthalocyanine and silver metal

AU - Bovill, A.J.

AU - McConnell, A.A.

AU - Smith, W.E.

PY - 1989/11

Y1 - 1989/11

N2 - Electrodes consisting of a compacted mixture of powders of silver metal and copper phthalocyanine (CuPc) have been used to study the interaction between small pigment particles and a metal surface using resonance Raman spectroscopy as a probe of in situ changes. The purpose of this present paper is to explore the condition required to produce optimum enhancement.Cycling in acid sulphate or nitrate electrolytes with a sufficiently positive voltage to release silver(I) ions resulted in the formation of a thin layer of CuPc particles spread out on the metal surface. The layer formed produced an improvement in Raman scattering from CuPc. From the resonance profile it was clear that there was a significant charge transfer interaction with the metal surface. The relative intensities of the peaks in the Raman spectra are dependent on potential. As well as the possible use of such electrodes in chemistry, particle metal layers of this type provide a different starting point for studies of the surface enhanced resonance Raman effect emphasising the electromagnetic contribution rather than the chemical one.

AB - Electrodes consisting of a compacted mixture of powders of silver metal and copper phthalocyanine (CuPc) have been used to study the interaction between small pigment particles and a metal surface using resonance Raman spectroscopy as a probe of in situ changes. The purpose of this present paper is to explore the condition required to produce optimum enhancement.Cycling in acid sulphate or nitrate electrolytes with a sufficiently positive voltage to release silver(I) ions resulted in the formation of a thin layer of CuPc particles spread out on the metal surface. The layer formed produced an improvement in Raman scattering from CuPc. From the resonance profile it was clear that there was a significant charge transfer interaction with the metal surface. The relative intensities of the peaks in the Raman spectra are dependent on potential. As well as the possible use of such electrodes in chemistry, particle metal layers of this type provide a different starting point for studies of the surface enhanced resonance Raman effect emphasising the electromagnetic contribution rather than the chemical one.

KW - silver metal

KW - copper phthalocyanine

KW - CuPc

KW - small pigment particles

KW - metal surface

KW - resonance Raman spectroscopy

UR - http://dx.doi.org/10.1039/F19898503695

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JO - Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases

T2 - Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases

JF - Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases

SN - 0300-9599

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