Laser ablation time-of-flight mass spectral studies of metal-substituted phthalocyanines

R. D. George, C. W. Chou, Peter Williams, Veronica Burrows, P. F. McMillan

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We have obtained time-of-flight mass spectra for metal complexes of tetrakis(cumylphenoxy)-phthalocyanines, MPc(CP)4, by pulsed laser ablation from frozen benzene solutions. The Pc complexes themselves act as chromophores for the 355 and 580 nm excitation wavelengths used. Prior vapor pressure osmometry (VPO) and UV/visible absorption studies indicate an increasing degree of molecular association in solution in the order Pb < Cu < Ni < Pd < Hg. The mass spectra of all but the Hg-containing sample are dominated by the monomeric molecular ion (ML+) peak. The HgPc(CP)4 sample shows a pattern containing strong peaks due to HgL2+, Hg2L3+, Hg3L4+, and other complex molecular ions. We suggest that this is consistent with formation of a cofacial Hg-linked polymer or oligomer in solution, as proposed in a previous VPO and UV/visible spectroscopy study.

Original languageEnglish (US)
Pages (from-to)5736-5738
Number of pages3
JournalLangmuir
Volume12
Issue number23
StatePublished - Nov 13 1996

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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    George, R. D., Chou, C. W., Williams, P., Burrows, V., & McMillan, P. F. (1996). Laser ablation time-of-flight mass spectral studies of metal-substituted phthalocyanines. Langmuir, 12(23), 5736-5738.