Synthesis and characterization and some properties of conjugated imine bonding polymers containing pyridine and vinyl units

KAYA İ., PÜSKÜL T., Yagmur H. K.

JOURNAL OF POLYMER RESEARCH, vol.29, no.4, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 4
  • Publication Date: 2022
  • Doi Number: 10.1007/s10965-022-02992-w
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Poly(azomethine)s, Conductivity polymers, Radicalic polymerization, AIBN
  • Çanakkale Onsekiz Mart University Affiliated: Yes


Poly(azomethine)s containing imine bond have the potential to be used as conductive materials due to their conjugated structure. Also, these types of polymers contain phenyl units in structures have quite high thermal stability. Because of these features, they have the opportunity to be used in many areas. Schiff base monomers were synthesized from the condensation reaction of peril aldehyde with 2-aminopyridine, 3-aminopyridine and 4-aminopyridine. The poly(azomethine)s were synthesized via the free radical polymerization of the Schiff base monomers in methanol medium by azobisisobutyronitrile (AIBN) as catalyst at 60 degrees C. The structures of the compounds were confirmed by Fourier transform infrared (FT-IR), Ultraviolet-visible (UV-Vis), Nuclear magnetic resonance (NMR) measurements. Thermal characterizations of monomers and polymers were made from Thermogravimetric analysis-Differential thermal analysis (TGA-DTA) and Differential Scanning Calorimetry (DSC) measurements. The weight average molecular weight (M-w) values of Poly[((4-(prop-1-en-2-yl)cyclohex-1-en-1-yl)methylene)pyridin-2-amine] (P-2-PSHMPA), Poly[((4-(prop-1-en-2-yl)cyclohex-1-en-1-yl)methylene)pyridin-3-amine] (P-3-PSHMPA) and Poly[((4-(prop-1-en-2-yl)cyclohex-1-en-1-yl)methylene)pyridin-4-amine] (P-4-PSHMPA) were found as 22,400, 20,000, and 24,800, respectively. The conductivity measurements of the doped with iodine and undoped of polymers were performed by four point probe technique with a Keithley 2400 electrometer. After doping with iodine, the conductivities of P-2-PSHMPA, P-3-PSHMPA and P-4-PSHMPA were found to be as 2.4 x 10(-4), 9.6 x 10(-5) and 6.2 x 10(-5) S cm(-1), respectively.