Metal-containing polymers synthesized via acyclic diene metathesis (ADMET) polymerization using electrochemically reduced tungsten-based catalyst: Polycarbogermanes


KARABULUT S., Aydogdu C., DUEZ B. , IMAMOGLU Y.

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, cilt.16, ss.115-122, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 16 Konu: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1007/s10904-006-9034-y
  • Dergi Adı: JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
  • Sayfa Sayıları: ss.115-122

Özet

Various germanium-containing dienes, bis(4-pentenyl)diethylgermanium (1), bis(4-pentenyl)dimethylgermanium (2) and bis(3-butenyl)diethylgermanium (3), were synthesized and polymerized using an electrochemically reduced tungsten-based catalyst system via acyclic diene metathesis (ADMET) polymerization. All polymer structures were characterized by H-1- and C-13-NMR spectroscopy. These results indicate the retention of the double bonds in the polymer structure with high trans content (57-70%) as expected from a step condensation reaction. These polymers have low molecular weight (M-W) that range from 7400 to 19,100. The thermal stability of polymers was evaluated by thermogravimetric analysis. The glass transition temperatures of the polymer of monomer 1, 2 and 3 were -24, -9 and -47 degrees C, respectively. Synthesis, characterization and the general limitations of ADMET polymers obtained by this catalyst are discussed.