Ultra-High-Density Photochromic Main-Chain 1,2-Dithienylcyclopentene Polymers Prepared Using Ring-Opening Metathesis Polymerization


  • This work was supported by the Natural Sciences and Engineering Research Council of Canada, the Canada Research Chairs Program, the Canadian Foundation for Innovation, the B.C. Knowledge Development Fund, and Simon Fraser University. Supporting information (synthesis and characterization of monomers 4a and 4b, and polymers 5a–c) for this article is available online at Wiley InterScience or from the author.


Ring-opening metathesis polymerization is used to construct the well-known photoresponsive 1,2-dithienylethene backbone for the generation of ultra-high-density photochromic main-chain polymers (see Figure). The photochromic monomer unit can be easily functionalized to create polymers with diverse structural and electronic properties. Both lipophilic and hydrophilic versions of the polymer have been prepared.