Study on Synthesis and Spectral Properties of Tetra-trifluoroethoxy Substituted Metal-free Pathalocyanine

OBJECTIVE To synthesis a new compound of tetra-trifluoroethoxy substituted metal-free phthalocyaninate(H₂PcF) and study its spectral properties. METHODS Firstly, 4-(trifluoroethoxy) phthalonitrile was synthesized by using 4-nitrophthalonitrile and 2, 2, 2-trifluoroethanol as starting materials by nucleophilic substitution. Then, H₂PcF was synthesized based on the precursor of 4-(trifluoroethoxy) phthalonitrile and characterized by melting point, IR, MS and elemental analysis. Its UV spectrum and fluorescence spectrum were also studied. RESULTS The yield of H₂PcF was 34.7%, it exhibited intense absorption in the visible region spectrum, mainly in the phototherapeutic window (600-800 nm) and strong fluorescence wih high fluorescence quantum yield(φ_F=0.29). CONCLUSION H₂PcF has shown potential application in photoelectric material or phototherapy filed due to its good solubility and spectral properties.