Synthesis and Characterization of New Conjugated Organic Polymers

Synthesis and Characterization of New Conjugated Organic Polymers

Mohammed Suliman Saa'd Synthesis and Characterization of New Conjugated Organic Polymers By Mohammed Suliman Saa'd Supervisors Prof. Hikmat S. Hilal Dr. Taleb AL-Tel 1999 The synthesis of new organic monomers and polymers is described. Protected monomeric species 2,5-bis[(2propanol) ethynyl]pyridine 1 and 2,5-bis[(trimethylsilyl)ethynyl] pyridine 2 were prepared using bis (triphenylphosphine) palladium(II)chloride as catalyst according to Heck-like reaction. The preparation of the monomeric species 2,5diethynylpyridine 3 is described using two different methods. The chemical preparations of poly(2,5-diethynylpyridine) 4 and poly(2,5-thiophinediethynylpyridine) 5 are described. The yields of polymer 4 and 5 were fairly good (43% and 45%, respectively). Poly (2,5-diethynylpyridine) 6 was prepared electrochemically using two solvents, methanol and acetonitrile. The prepared monomeric and polymeric species were characterized spectroscopically using IR, 1H-NMR, 13C-NMR, GC-MS,Ion-spray-MS, UV-vissible and Emission fluorescence Zajel / An-Najah National University