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Vapour pressure of some phthalocyanines

✍ Scribed by P. P. Semyannikov; T. V. Basova; V. M. Grankin; I. K. Igumenov

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 69 KB
Volume: 04
Category: Article
ISSN: 1088-4246
DOI: 10.1002/(sici)1099-1409(200004/05)4:3<271::aid-jpp205>3.0.co;2-4

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✦ Synopsis

Mass spectrometric studies of the composition of the gaseous phase under solid compounds of free phthalocyanine ( H ~2~ Pc ) and its complexes with aluminium ( AlClPc , AlFPc , ( AlPc )~2~ O ) and copper ( CuPc ) were performed in the temperature range up to 700 °C. It has been shown that the phthalocyanines sublime in the form of monomers, excluding one aluminium complex. All phthalocyanines under investigation sublime without thermal decomposition until 700 °C. The vapour pressure of these phthalocyanines was determined as a function of temperature by the Knudsen effusion method, in which the rate of effusion of the equilibrium vapour through a small orifice was measured. The thermodynamic parameters of the sublimation process for phthalocyanies were calculated.

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