Copolymers of 1,5‐cyclooctadiene and [2.2]paracyclophane‐1,9‐diene: metathetic preparation and structure analysis

Abstract

Abstract Copolymers of 1,5‐cyclooctadiene (COD) and [2.2] paracyclophane‐1,9‐diene (PCPDE) were prepared by methathesis reaction using a well‐defined tungsten carbene complex as catalyst. UV/Vis and 1 H NMR spectroscopy give evidence for a dissection of the opened PCPDE molecule into separate p ‐phenylenevinylene units in the course of the polymerization. These units are distributed randomly in the polymer chain. This was confirmed by the metathetical preparation and spectroscopic investigation of a model substance and the comparison with spectra of compounds similar to the p ‐phenylenevinylene units in the copolymer.