Synthesis, characterization and electrical properties of peripherally tetra-aldazine substituted novel metal free phthalocyanine and its zinc(II) and nickel(II) complexes.
The novel phthalonitrile containing azine segment and its corresponding tetra aldazine substituted metal free- and metallo-phthalocyanines (Zn(II) and Ni(II)) were synthesized and characterized by IR, (1)H NMR, Mass, UV-Vis spectroscopy and elemental analysis and addition to these techniques for substituted phthalonitrile (13)C NMR have been used. In addition, dc and ac electrical properties of the films of these novel phthalocyanines were investigated as a function of temperature (295-523 K) and frequency (40-10(5)Hz). Activation energy values of the films of the phthalocyanines were calculated from straight portions of the Arrhenius plot (lnσ(dc)-1/T curves) as 0.70 eV, 0.93 eV and 0.91 eV for the films of metal free, nickel- and zinc-phthalocyanines, respectively. From impedance spectroscopy measurements, it is observed that bulk resistance decreases with increasing temperature indicating semiconductor property.
Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey. bayrakriza@ktu.edu.tr
Rıza
R
Bayrak
Fatih
F
Dumludağ
Hakkı Türker
HT
Akçay
İsmail
İ
Değirmencioğlu
D058266:Dielectric Spectroscopy; D004553:Electric Conductivity; D007211:Indoles / Q000138:chemical synthesis / Q000737:chemistry*; D054833:Isoindoles; D009532:Nickel / Q000737:chemistry*; D009570:Nitriles / Q000138:chemical synthesis / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012666:Semiconductors; D013057:Spectrum Analysis; D013881:Thioridazine / Q000138:chemical synthesis / Q000737:chemistry*; D017967:Zinc Compounds
D007211:Indoles; D054833:Isoindoles; D009570:Nitriles; D009942:Organometallic Compounds; D017967:Zinc Compounds; C052159:Zn(II)-phthalocyanine; D009532:Nickel; D013881:Thioridazine; C013647:phthalocyanine