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1 Polish Journal of Chemistry

1 2002

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Deposition and Characterization by Surface Plastmon Resonance of Langmuir-Blodgett Monolayers of Three Macrocyclic Conjugated Tetrapyrrole Compounds Exposed to Chlorine Gas

Honeybourne C. L., Portus D., Ratcliffe N.M., Richardson T., Ashwell G.J.

Polish Journal of Chemistry

2002

Vol. 76 / nr 2-3

367-376

Surface plasmon resonance (SPR) and quartz crystal microbalance (QCM) studies are described for tetrakis-tert-butylphthalocyanatoCu(II) and two new tetrakis-5,10,15,20- (substituted phenyl)-21H,23H-porphines. The Langmuir isotherms of the porphines, coupled with the layer thickness and contact area of the LB monolayers, show that these two compounds are not forming regular monolayer LB films, but are exhibiting extensive clumping on the subphase and on the substrates. The optical spectra and SPR of the porphine films did not exhibit noteworthy sensitivity to chlorine. In contrast the phthalocyanine gave good quality monolayers, which showed promise for sensing chlorine in the 1-10 ppm range.