Novel crown ether substituted phthalocyanine with good gas sensing properties to NO2

Abstract

A novel 18-crown-6 substituted phthalocyanine was synthesized. LB films of this material were prepared by a vertical dipping method and the structures of the films were characterized by absorption spectra, polarized absorption spectra and X-ray diffraction experiments. The results indicate that the films possess highly ordered structures. The LB films display good gas sensing properties to NO ₂ with a high sensitivity, quick response and good reversibility at room temperature.