Synthesis and characterization of double-decker phthalociyanines and the investigation of electrochromic properties

Key Words: Phthalocyanines, Lutetium, Ytterbium, Samarium, EuropiumIn the present work, lanthanide bis-[(4,4?,4??,4???)-tetrakis 4-dodexyloxy phthalocyanines], {M[Pc(O-C12H25)4]2} (M=Lu3+, Yb3+, Sm3+ ve Eu3+) were obtained. These phthalocyanines from cylotetramerization reaction of 4-dodexyloxy phthalonitrile, with corresponding appropriate [MX3] (X=Acac) in the presence of qunolin and 1,8-diazabicyclo[5,4,0] undec-7-ene (DBU) as a strong at reflax temperature.All of the phthalocyanines were purified by chromatography. The elemental analysis, IR, UV-Vis, 1H-NMR, 13C-NMR confirm the proposed structures of the compounds and spectroscopic changes of phthalocyanines with Ag+ and Pd2+ ions were investigated by UV-Vis spectroscopy.