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Nitrophenylene Polymers: Photodegradable Backbones via Ring-opening Metathesis Polymerization
Cheoljae Kim(김철재) 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
A nitrophenylene polymer via ring-opening metathesis polymerization (ROMP) for the photo-mediated degradation has been developed. General degradable polymers contain hydrolysable functionalities such as esters, acetals, and vinyl ethers in their backbones, and their degradation requires an additional chemical step in presence of acid or base catalyst. Newly designed macrocyclic monomers bearing orthonitrobenzyl groups were successfully polymerized with Grubbs catalysts, and the resulting polymers were cleaved in presence of UV light without any chemical additive. Further studies are focused on the reversible polymerization and depolymerization of macrocyclic monomers in the manner of entropically-driven ROMP.