摘要：

The dimer of 1,11 dodecadiyne is representative of a family of diacetylene monomers which can be crystallized and then polymerized into semiconducting polymers. These materials possess sheet-like structures containing parallel polyacetylene and poly-diacetylene chains bridged by methylene units. Polymeric forms of these coupled diynes have also been prepared and crosspolymerized. Structural studies of these materials have been performed. The dimer of 1,11 dodecadiyne was prepared in a unique manner which eliminates the possibility of contamination by oligomeric impurities that hinder crystallization. Microscopic single crystals of the dimer, obtained from hexane solution, were used in a structure analysis by electron diffraction. These results were compared to the structure of the fully polymerized crystal which was determined by X-ray analysis.

展开