Microwave-Assisted Simultaneous Synthesis of Conducting and Non-Conducting Polymers from Potassium 2,4,6-Tribromophenolate

Download

index.pdf

Date

2009-01-01

Author

Celik, Gueler Bayrakli
Kisakurek, Duygu

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

29
views

0
downloads

A simultaneous synthesis of white poly(dibromophenylene oxide) (P) or yellow radical ion polymer (RIP) and black conducting polymer (CP) were achieved from potassium 2,4,6-tribromophenolate by microwave energy in a very short time. Polymerizations were carried out (i) under constant microwave energy and constant amount of water with different time intervals ranging from I to 7 min or (ii) at constant time intervals and constant amount of water with variation of microwave energy ranging from 70 to 900 watt or (iii) at constant time intervals and constant microwave energy with changing amount of water ranging from 0.5 to 5 mL. The synthesis of P and CP were achieved in 3 min at 70 watt and in I min in the range of 180-900 watt in 0.5 mL water whereas RIP was only achieved either at 70 or 350 watt in 17 or 25 min and in 0.5 or 5 mL water. The optimum conditions for synthesis of P, RIP and CP were for (i) 350 watt for 3 min in 5 mL water, for (ii) 350 watt for 25 min in 5 mL water and for (iii) 500 watt for I min in 0.5 mL water with maximum values of 39.2, 35.0 and 27.9%, respectively. RIP was synthesized only at 70 watt in 17 min and at 350 watt in 3 min, having maximum conversion value of 35.0%. The polymers were characterized via elemental analysis, FT-IR, (1)H and (13)C NMR, X-ray diffraction spectroscopy, DSC, TGA-FTIR, ESR, SEM conductivity measurement and Light Scattering. Polymerizations of P and RIP were proceeding though both 1,2- and 1,4-addition at equal rates having a branch structure and their molecular weights were 8.1 x 10(4) g/mol and 1.2 x 10(4) g/mol respectively. P and RIP were rigid polymers having high T(g) values. The synthesis of conducting polymer, with the conductivity of 1.34 S cm(-2) was achieved in the absence of doping process.

Subject Keywords

Materials Chemistry, Polymers and Plastics

URI

https://hdl.handle.net/11511/65956

Journal

POLYMER JOURNAL

DOI

https://doi.org/10.1295/polymj.pj2009123

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Microwave-assisted simultaneous synthesis of conducting, non-conducting and cross-linked polymers from sodium 2,4,6-tribromophenolate and LiOH Celik, Gueler Bayrakli; Kisakuerek, Duygu (Informa UK Limited, 2007-01-01) Poly(dibromophenylene oxide) (P) and conducting polymer (CP) and/or cross-linked polymer (CLP) were synthesized simultaneously from sodium 2,4,6-tribromophenol ate and LiOH by microwave energy in a very short time interval. Polymerizations were carried out (i) under constant microwave energy and constant amount of water with different time intervals ranging from I to 20 min, or (ii) at constant time intervals and constant amount of water with variation of microwave energy ranging from 90 to 900 W, or (iii) ...
Simultaneous novel synthesis of conducting, nonconducting, and crosslinked polymers by microwave initiation Çelik, Güler (Wiley, 2006-12-15) A novel synthesis of poly(dibromophenylene oxide) (P), conducting polymer (CP), and/or crosslinked polymer (CLP), and/or radical ion polymers (RIP) was achieved simultaneously from sodium 2,4,6-tribromophenolate by microwave energy in a very short-time interval. The synthesized polymers were characterized via elemental analysis, FTIR, H-1 NMR and C-13 NMR, X-ray diffraction spectroscopy, SEM, DSC, TGA, ESR, GPC, conductivity measurement, and light scattering. It was found that polymerization proceeds throug...
Immobilization of Invertase in a Novel Proton Conducting Poly(vinylphosphonic acid) - poly(1-vinylimidazole) Network Isikli, Suheda; Tuncagil, Sevinc; Bozkurt, Ayhan; Toppare, Levent Kamil (Informa UK Limited, 2010-01-01) A novel proton conducting polymer blend was prepared by mixing poly(vinylphosphonic acid) (PVPA) with poly(1-vinylimidazole) (PVI) at various stoichiometric ratios via changing molar ratio of monomer repeating unit to achieve the highest protonation. The polymer network having the most suitable stoichiometric ratio for substantial proton conductivity was prepared and characterized by FT-IR spectroscopy and proton conductivity measurements. The network was used for immobilization of invertase and some import...
A new soluble conducting polymer and its electrochromic devices YİLDİZ, UMİT HAKAN; SAHİN, ELİF; Akhmedov, IM; Tanyeli, Cihangir; Toppare, Levent Kamil (Wiley, 2006-04-01) A new polythiophene derivative was synthesized by both chemical and electrochemical oxidative polymerization of 1-(1-phenylethyl)-2,5-di(2-thienyl)-1H-pyrrole (PETPy). Of which the chemical method produces a polymer that is completely soluble in organic solvents. The structures of both the monomer and the soluble polymer were elucidated by nuclear magnetic resonance (H-1 and C-13 NMR) and Fourier transform infrared (FTIR) spectroscopy. The average molecular weight has been determined by gel permeation chrom...
Thermal degradation of poly(allyl methacrylate) by mass spectroscopy and TGA Vardareli, Tugba Kantav; Keskin, Selda; Usanmaz, Ali (Informa UK Limited, 2006-10-01) Allyl methacrylate, AMA was polymerized in CCl4 solution by alpha,alpha'-azoisobutyronitrile at 50 degrees C. The thermal degradation mechanism of PAMA was characterized by MS, TGA-FT-IR and FT-IR-ATR methods. The mass spectrum and TGA thermogram showed two stage degradation. The first stage of degradation was mostly linkage type degradation for the fragmentation of pendant allyl groups at 225 - 350 degrees C. In the second stage, at 395 - 515 degrees C, the degradation is random scission and depolymerizati...

Citation Formats

G. B. Celik and D. Kisakurek, “Microwave-Assisted Simultaneous Synthesis of Conducting and Non-Conducting Polymers from Potassium 2,4,6-Tribromophenolate,” POLYMER JOURNAL, pp. 1129–1135, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65956.