Molecular adsorption cross section and orientation of tetraphenylporphin and its copper derivative at mercury and air interfaces

Abstract

The molecular orientation, adsorption cross section, and structure of porphin, tetraphenylporphin, copper tetraphenylporphin, and 4-chloromesotetraphenylporphin in benzene solution at a mercury and air interface have been determined experimentally from interfacial and surface-tension measurements. The data fits well to Shereshefsky's equation, and the results are compatible with those obtained from X-ray diffraction measurements on the solid phase.