Azulene-based conjugated polymers: Unique seven-membered ring connectivity leading to stimuli-responsiveness

Masahito Murai, Elizabeth Amir, Roey J. Amir, Craig J. Hawker

    Research output: Contribution to journalArticlepeer-review

    78 Citations (Scopus)


    A novel family of stimuli-responsible polyazulenes connected through the seven-membered ring, in contrast to traditional five-membered connectivity, have been prepared by Yamamoto-, Sonogashira-, and Stille-coupling of 4,7-dibromoazulenes. Polymer absorption can be tuned by structural modification of the conjugated backbones with UV-vis and EPR studies indicating that the seven-membered ring connection of the azulene unit is effective for the generation and stabilization of azulenium cations. The degree of conjugation and the reversibility of optical properties upon protonation and deprotonation is sensitive to the steric environment of the seven-membered ring and can be tuned by both substitution and incorporation of linkers between the azulene units.

    Original languageEnglish
    Pages (from-to)2721-2725
    Number of pages5
    JournalChemical Science
    Issue number9
    Publication statusPublished - Sept 2012

    ASJC Scopus subject areas

    • Chemistry(all)


    Dive into the research topics of 'Azulene-based conjugated polymers: Unique seven-membered ring connectivity leading to stimuli-responsiveness'. Together they form a unique fingerprint.

    Cite this