Fast Switching Immobilized Photochromic Dyes

Nino Malic, Jonathan Campbell, Ali Abdelselam, Craig Francis, Richard Evans

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    A novel photochromic dye conjugate architecture is described, which allows both covalent tethering to a polymeric host matrix and fast photochromic switching. The new conjugates consist of a photochromic dye covalently bound to two different substituents via a Y-branching linker (hetero Y-branching), one being a polymerizable methacrylate moiety and the other a soft (low T g) poly(dimethylsiloxane) oligomer. The novel conjugates gave faster photochromic decoloration in the host lens matrix compared with the electronically equivalent nonmatrix-bound and unconjugated parent control dyes. In addition, further acceleration of fade speed kinetics was observed with a longer linker between photochromic dye and methacrylate moiety.

    Original languageEnglish
    Pages (from-to)476-486
    Number of pages11
    JournalJournal of Polymer Science Part A: Polymer Chemistry
    Volume49
    Issue number2
    DOIs
    Publication statusPublished - 15 Jan 2011

    Keywords

    • branched
    • matrix
    • photochromic dyes
    • polydimethylsiloxane
    • polysiloxanes
    • tethering
    • Y-branched

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