Thin films of copper hexadecafluorophthalocyanine CuPcF₁₆

Abstract

In this work, structural features and optical properties of CuPcF 16 films deposited by physical vapour deposition have been investigated. Thin films of two different thicknesses (22 and 198 nm) were characterized by ellipsometry, optical absorption spectroscopy and scanning electron microscopy. Film morphology and optical properties are found to depend on film thickness. Absorption spectra of CuPcF 16 films were compared with those of unsubstituted copper phthalocyanine. The sensor response of CuPcF 16 film to ammonia was studied using surface plasmon resonance measurements. It was stated that strong electron-withdrawing fluorine substituents make this compound sensitive to reducing gases such as NH 3 while unsubstituted CuPc is practically insensitive to this gas.

Spectral characterization of thin films of vanadyl hexadecafluorophthalocyanine VOPcF16

“…The value of the refractive index obtained in this work for VOPcF 16 film are in good agreement with those calculated for thin films of other phthalocyanines [21][22][23].…”

Characterisation of Langmuir–Blodgett films of new multinuclear copper and zinc phthalocyanines and their sensing properties to volatile organic vapours

“…This extraordinary versatility makes the Pc and MPc materials as attractive candidates for a wide range of potential applications such as photovoltaic cells, molecular metals, chemical sensors, nonlinear optics, and electrochromic display devices [4][5][6][7]. MPcs have attracted interest for gas sensing applications because of their high chemical and thermal stability, their ability to be deposited as thin layers, and their high intrinsic conductivity [8,9].…”

Planar Ni(ii), Cu(ii) and Co(ii) tetraaza[14]annulenes: structural, electronic and magnetic properties and application to field effect transistors

“…10,11 An interesting feature of phthalocyanine chemistry is that their semiconducting behaviour can be switched from p-type to n-type, going from the unsubstituted compound to the hexadecafluorinated analogue. 12,13 Along with their attractive qualities such as planarity, high number of p-electrons and suitable crystal packing, the high thermal and chemical stability of these macrocycles is of importance in FET applications as this allows high purity films to be easily grown by vacuum sublimation techniques. 14 A well known, but less studied, porphyrin analogue is the class of dibenzotetraaza [14]annulenes.…”