Photoregulation of Retro-Diels–Alder Reaction at the Center of Polymer Chains
2017
Photoregulation of polymer chain scission based on a Diels–Alder (DA) adduct containing diarylethene (DAE) was investigated. Poly(e-caprolactone) with a DA adduct conjugated with DAE skeleton (DAE/DA) at the center of the chain was synthesized by ring-opening living cationic polymerization of e-caprolactone, initiating from diol-type DAE/DA, and its chain scission via thermally induced retro-DA reaction was successfully controlled by photoisomerization of DAE.
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