Synthesis and characterization of poly(dihalophenylene oxides) by thermal decomposition of copper complexes with tetramethylethylenediamine and ethylenediamine ligands

Ünal, H. Ibrahim
Kısakürek, Duygu
Şanlı, Oya
Thermal polymerization of bis(trihalophenoxo)-N,N,N′,N′-tetramethylethylenediamine copper(ii) and bis(trihalophenoxo)ethylenediamine copper(ii) was achieved in toluene at 70°C. The dependences of intrinsic viscosity and the percentage yield of the polymers on a sequence of increasing decomposition times of copper complexes were investigated. Structural analyses of the polymers were carried out using mainly1H nuclear magnetic resonance spectroscopy and differential scanning calorimetry. 1,4-Catenation was highly favoured over 1,2-addition in 4-bromo-2,6-dichlorophenoxide- and 2,4,6-triiodophenoxide- (with ethylenediamine ligand) and 2,4,6-triiodophenoxide- (with tetramethylethylenediamine ligand) derived polymers. However, polymers synthesized from 2,4,6-trichlorophenoxide with either ligand displayed a selectivity in favour of 1,2-catenation, whereas for 2,4,6-tribromophenoxide with ethylene diamine ligand, 1,4-catenation and ortho substitution took place at roughly equal rates.


BASTURKMEN, M; KISAKUREK, D (Elsevier BV, 1993-01-01)
Thermal polymerization of bis(pyridine)bis(trichlorophenoxo)copper(II) was achieved in the solid state for the first time. The time and temperature effect on polymer molecular weight, percentage yield and the structure of polymer was first studied, at constant temperature and then for constant decomposition time. Polymers were characterized by i.r., H-1 n.m.r. and C-13 n.m.r. The molecular weights of the polymers were obtained by viscometric measurements at 30-degrees-C in toluene and glass transition tempe...
SEN, S; KISAKUREK, D (Elsevier BV, 1993-01-01)
Electroinitiated polymerization of bis(2,4,6-trichlorophenoxo)bis(pyridine)copper(II) complex was achieved in dimethylformamide by constant potential electrolysis under air and N2. The polymers obtained at several potentials were characterized by H-1 n.m.r., C-13 n.m.r., FTi.r. and d.s.c., and were found to be branched. The kinetics of the polymerization were followed by in situ cyclic voltammetry measurements at 13.5 and 20-degrees-C during electrolysis. As found for the thermal polymerization of this comp...
Synthesis and characterization of boron-doped Bi2O3-La2O3 fiber derived nanocomposite precursor
Durmusoglu, Senol; Uslu, Ibrahim; TUNÇ, TUNCAY; Keskin, Selda; Aytimur, Arda; Akdemir, Ahmet (Springer Science and Business Media LLC, 2011-11-01)
Boron doped poly(vinyl) alcohol/ bismuth - lanthanum acetate (PVA/Bi-La) nanofibers were prepared by electrospinning using PVA as a precursor. The effect of boron doping was investigated in terms of solution properties, morphological changes and thermal characteristics. The fibers were characterized by FT-IR, XRD, SEM and BET. The addition of boron did not only increase the thermal stability of the fibers, but also their diameters, which yielded stronger fibers. XRD analyses showed that boron doping increas...
Synthesis of poly(dihalophenylene oxide)s by atom transfer radical rearrangement polymerization via Ce(IV)/Ce(III) complexes in solid state
Çelik, Güler (Informa UK Limited, 2006-01-01)
Poly(dihalophenylene oxide)s by solid-state thermal decomposition of (trihalophenolato) cerium complexes with either N-methyl imidazole or pyridine as neutral ligands were synthesized at different temperatures (80-250 degrees C) and different time intervals (3-48 h) via atom transfer rearrangement radical polymerization. The complexes were characterized by FT-IR, DSC, SEM, mass spectroscopy, magnetic susceptibility and elemental analyses. Structural analyses of polymers were performed by H-1- and C-13-NMR, ...
Synthesis and characterization of conducting copolymers of (S)-2-methylbutyl-2-(3-thienyl)acetate with pyrrole and thiophene
Levent, A; Toppare, Levent Kamil; Cianga, I; Yagci, Y (Wiley, 2003-05-30)
Polymerization of methylbutyl-2-(3-thienyl)-acetate (MBTA) was achieved by constant current electrolysis at low temperature. Subsequently, the syntheses of block copolymers of polyMBTA were accomplished in the presence of either pyrrole or thiophene by constant potential electrolysis. Moreover, the copolymer of MBTA with thiophene was obtained with constant potential electrolysis.
Citation Formats
H. I. Ünal, D. Kısakürek, and O. Şanlı, “Synthesis and characterization of poly(dihalophenylene oxides) by thermal decomposition of copper complexes with tetramethylethylenediamine and ethylenediamine ligands,” Polymer, pp. 344–347, 1989, Accessed: 00, 2020. [Online]. Available: