Resonance raman excitation profile of cobalt phthalocyanine at room-temperature and 10-k

C.R. Bartholomew, A.A. McConnell, W.E. Smith

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Resonance excitation profiles have been obtained for cobalt phthalecyanine at both room temperature and 10 K using a compressed disc of silver and the phthalocyanine. Low-frequency vibrations are shown to be influenced mainly by displacements on the bonding nitrogen, but high-frequency vibrations show a more complex pattern with some evidence that the vibrations v3 and v28 depend on C displacements. By comparison with copper, there appears to be a greater degree of scattering from 0-0 and 0-1 transitions and there is a shift towards increase 0-0 scattering in the sharper low-temperature profiles. It is concluded that a distortion, dynamic at room temperature and static at low temperature, plays a key role in determining the relative scattering and this distortion is larger for copper phthalocyanine than for cobalt phthalocyanine.
LanguageEnglish
Pages595-600
Number of pages5
JournalJournal of Raman Spectroscopy
Volume20
Issue number9
DOIs
Publication statusPublished - Sep 1989

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Cobalt
Scattering
Copper
Temperature
Silver
Nitrogen
cobalt phthalocyanine

Keywords

  • resonance excitation profiles
  • cobalt phthalecyanine
  • silver
  • phthalocyanine
  • low-frequency vibrations
  • nitrogen
  • high-frequency vibrations

Cite this

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title = "Resonance raman excitation profile of cobalt phthalocyanine at room-temperature and 10-k",
abstract = "Resonance excitation profiles have been obtained for cobalt phthalecyanine at both room temperature and 10 K using a compressed disc of silver and the phthalocyanine. Low-frequency vibrations are shown to be influenced mainly by displacements on the bonding nitrogen, but high-frequency vibrations show a more complex pattern with some evidence that the vibrations v3 and v28 depend on C displacements. By comparison with copper, there appears to be a greater degree of scattering from 0-0 and 0-1 transitions and there is a shift towards increase 0-0 scattering in the sharper low-temperature profiles. It is concluded that a distortion, dynamic at room temperature and static at low temperature, plays a key role in determining the relative scattering and this distortion is larger for copper phthalocyanine than for cobalt phthalocyanine.",
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Resonance raman excitation profile of cobalt phthalocyanine at room-temperature and 10-k. / Bartholomew, C.R.; McConnell, A.A.; Smith, W.E.

In: Journal of Raman Spectroscopy, Vol. 20, No. 9, 09.1989, p. 595-600.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Resonance raman excitation profile of cobalt phthalocyanine at room-temperature and 10-k

AU - Bartholomew, C.R.

AU - McConnell, A.A.

AU - Smith, W.E.

PY - 1989/9

Y1 - 1989/9

N2 - Resonance excitation profiles have been obtained for cobalt phthalecyanine at both room temperature and 10 K using a compressed disc of silver and the phthalocyanine. Low-frequency vibrations are shown to be influenced mainly by displacements on the bonding nitrogen, but high-frequency vibrations show a more complex pattern with some evidence that the vibrations v3 and v28 depend on C displacements. By comparison with copper, there appears to be a greater degree of scattering from 0-0 and 0-1 transitions and there is a shift towards increase 0-0 scattering in the sharper low-temperature profiles. It is concluded that a distortion, dynamic at room temperature and static at low temperature, plays a key role in determining the relative scattering and this distortion is larger for copper phthalocyanine than for cobalt phthalocyanine.

AB - Resonance excitation profiles have been obtained for cobalt phthalecyanine at both room temperature and 10 K using a compressed disc of silver and the phthalocyanine. Low-frequency vibrations are shown to be influenced mainly by displacements on the bonding nitrogen, but high-frequency vibrations show a more complex pattern with some evidence that the vibrations v3 and v28 depend on C displacements. By comparison with copper, there appears to be a greater degree of scattering from 0-0 and 0-1 transitions and there is a shift towards increase 0-0 scattering in the sharper low-temperature profiles. It is concluded that a distortion, dynamic at room temperature and static at low temperature, plays a key role in determining the relative scattering and this distortion is larger for copper phthalocyanine than for cobalt phthalocyanine.

KW - resonance excitation profiles

KW - cobalt phthalecyanine

KW - silver

KW - phthalocyanine

KW - low-frequency vibrations

KW - nitrogen

KW - high-frequency vibrations

UR - http://dx.doi.org/10.1002/jrs.1250200908

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DO - 10.1002/jrs.1250200908

M3 - Article

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JO - Journal of Raman Spectroscopy

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JF - Journal of Raman Spectroscopy

SN - 0377-0486

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ER -