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Methyl Transfer from Methylcobalt(III) Phthalocyanine to Bromide and Iodide Ions in Sulfolane

100%

Gałęzowski W.

Polish Journal of Chemistry

2001

tom Vol. 75, nr 7

949-955

Rates of methyl transfer from methylcobalt(III) phthalocyanine (MeCoIIIPc) to bromide and iodide nucleophiles in sulfolane were measured in the temperature range 20-40_C. In contrast to iodide, bromide ion forms an unreactive complex MeCoIIIPcBr-, formation constant for which was determined. Rates of reaction between CoIPc- and methyl iodide were also measured. Identity rate constant for methyl transfer between two CoIPc- nucleophiles of 51M-1 s-1 at 25_C was obtained using the Marcus equation. This identity rate is the largest out of many determined in this solvent.

Sensor Properties of Bilayer Structures with Palladium, Lead and Cobalt Phthalocyanines in Surface Acoustic Wave and Electric Systems

75%

Jakubik W.

2004

tom Vol. 25

141-152

Presented here are the results concerning a hydrogen sensor based on a novel bilayer structure with lead and cobalt phthalocyanines in a Surface Acoustic Wave dual-delay line and electric systems. The sensor material consists of two layers produced in two different vapour deposition processes. The first one is a lead or cobalt phthalocyanine (~310nm PbPc or 200nm CoPc) layer, whereas the second is a ~20 nm thin palladium (Pd) film. This structure was simultaneously formed in a one of the SAW dual delay lines and on the interdigital electrodes of the glass substrate for electric measurements. These sensor structures have been investigated from the point of view their sensitivity towards: hydrogen, nitrogen dioxide and sulphur dioxide gases with different concentrations in dry air. Preliminary measurements of this two bilayer structures have been performed simultaneously in the same chamber for this same measurement conditions.