Naarman polyacetylene

Acetylene is polymerized to polyacetylene [IUPAC poly(ethene-l,2-diyl)] by Ziegler-Natta initiators such as titanium tetraisobutoxide with triethylaluminum [Ito et al., 1974 Shelburne and Baker, 1987 Shirakawa, 2001 Theophilou and Naarman, 1989]. Polymerization at... 

A spectacular example of a clear relationship between chemical and stnictural homogeneity and improved electrical properties can be found in polyacetylene. C CP MAS NMR studies of initially synthesized polyacetylene [22,23] indicated the presence of a small fraction of sp hybridized carbons in addition to sp carbons expected for a perfect polyene chain. Drastic reduction in the number of these sp defects observed in polyacetylene prepared by the method developed by Naarman and Theophilou, resulted in an important improvement of the conductivity of this polymer in the doped state [24],... 

Another important advance in polyacetylene chemistry is the polymerization protocol developed by Naarman and co-workers. Using a specially prepared catalyst system and clever in situ processing conditions, acetylene could be polymerized to produce a near defect-free, highly crystalline polyacetylene. On doping, conductivities as high as 1(P S cm were seen. An organic polymer was showing conductivites that rival those of copper metal ... 

H. Naarman reported a new variation on the Zeigler-Natta route to polyacetylene. Naarman utilized a standard Ziegler-Natta catalyst... 

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