Synthesis of Helically π-Stacked Polymers viaCyclocopolymerization of Isocyanide and Allene

摘要

π-Stacked polymers,which consist of layered π-electron systems in a polymer,havecharacteristic electron transfer or luminescence properties.Therefore the π-Stacked polymercan be expected to be applied to novel opto-electronic materials.However,the constructionof a stable π-stacked structure in a polymer is considerably challenging,because it requiressophisticated designs and precise synthetic methods.We have recently achieved livingcyclocopolymerization of an o-allenylarylisocyanide to afford poly(quinolylene-2,3-methylene).1 Herein,we present the construction of a novel π-stacked polymer usingpoly(quinolylene-2,3-methylene) as a scaffold by introducing L-α-amino acid derivativesinto the side chain.