Structure and composition of thin films of peripherally unsubstituted phthalocyanine deposited using the Langmuir-Blodgett technique

R. D. George, P. F. McMillan, Veronica Burrows, Richard Hervig

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Langmuir-Blodgett films of peripherally unsubstituted phthalocyanine (Pc) have been deposited on substrates of silicon, aluminized silicon and gallium arsenide by means of a precursor compound, dilithium phthalocyanine (Li2Pc), from an aqueous subphase. The resulting films have been chemically and structurally characterized using surface IR reflection spectroscopy, Raman spectroscopy, and secondary ion mass spectrometry. The results show that the films contain both Li2Pc and metal-free phthalocyanine, indicating that hydrolysis of Li2Pc by the aqueous subphase is not complete, contrary to previous assumptions in the literature. The resulting films are brittle and polycrystalline in nature, with little or no preferred molecular orientation. This behavior is thought to be due to the molecular association of the Li2Pc both in the spreading solution and on the aqueous subphase.

Original languageEnglish (US)
Pages (from-to)303-316
Number of pages14
JournalThin Solid Films
Volume203
Issue number2
DOIs
StatePublished - Aug 30 1991

Fingerprint

Silicon
Thin films
thin films
Chemical analysis
Molecular orientation
Gallium arsenide
Langmuir Blodgett films
silicon
Langmuir-Blodgett films
Secondary ion mass spectrometry
secondary ion mass spectrometry
gallium
Raman spectroscopy
hydrolysis
Hydrolysis
Metals
Association reactions
Spectroscopy
Substrates
metals

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Structure and composition of thin films of peripherally unsubstituted phthalocyanine deposited using the Langmuir-Blodgett technique. / George, R. D.; McMillan, P. F.; Burrows, Veronica; Hervig, Richard.

In: Thin Solid Films, Vol. 203, No. 2, 30.08.1991, p. 303-316.

Research output: Contribution to journalArticle

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