Tellurophene-containing pi-conjugated polymers with unique heteroatom-heteroatom interactions by post-element-transformation of an organotitanium polymer

A unique pi-conjugated polymer that possesses fully coplanar ring units through a tellurium-oxygen interaction, poly[(tellurophene-2,5-diyl)-alt-(2,5-dialkoxybenzene-1,4-diyl)], was prepared by the post-element-transformation of a titanacyclopentadiene-containing reactive precursor. The characteristic features of the heteroatom-heteroatom interaction and the electronic features of the polymer such as high HOMO and low LUMO energy levels are described.