Visible light-responsive DASA-polymer conjugates

Ulrich, Sebastian and Hemmer, James R. and Page, Zachariah A. and Dolinski, Neil D. and Rifaie-Graham, Omar and Bruns, Nico and Hawker, Craig J. and Boesel, Luciano F. and Read De Alaniz, Javier (2017) Visible light-responsive DASA-polymer conjugates. ACS Macro Letters, 6 (7). pp. 738-742.

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    A modular synthesis of Donor-Acceptor Stenhouse Adduct (DASA) polymer conjugates is described. Pentafluorophenyl-ester chemistry is employed to incorporate aromatic amines into acrylate and methacrylate copolymers, which are subsequently coupled with activated furans to generate polymers bearing a range of DASA units in a modular manner. The effect of polymer glass transition temperature on switching kinetics is studied, showing dramatic rate enhancements in going from a glassy to a rubbery matrix. Moreover, tuning the DASA absorption profile allows for selective switching, as demonstrated by ternary photopatterning, with potential applications in rewriteable data storage.