Ogawa Satoshi, Morita Hiroki, Hsu Yu-I, Uyama Hiroshi, Tobisu Mamoru
Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Suita Osaka 565-0871 Japan.
Chem Sci. 2024 Oct 7;15(42):17556-61. doi: 10.1039/d4sc04147j.
To establish a sustainable society, the development of polymer materials capable of reverting into monomers on demand is crucial. Traditional methods rely on breaking labile bonds such as esters in the main chain, which limits applicability to polymers that consist of robust covalent bonds. We found that the integration of directing groups allowed the engineering of resilient polymers with built-in recyclability. Our study showcases phenylene ether-based polymers fortified with directing groups, which can be selectively disassembled under nickel catalysts selective cleavage of carbon-oxygen bonds. Notably, these polymers exhibit exceptional chemical stability towards acids, bases, and oxidizing agents, while being degradable to well-defined, repolymerizable molecules in the presence of a catalyst. Our findings allow for the development of next-generation polymer materials that are chemically recyclable by design.
为建立一个可持续发展的社会，开发能够按需转化为单体的聚合物材料至关重要。传统方法依赖于断裂主链中诸如酯键等不稳定键，这限制了其对由坚固共价键组成的聚合物的适用性。我们发现引入导向基团能够设计出具有内置可回收性的弹性聚合物。我们的研究展示了用导向基团强化的亚苯基醚基聚合物，其在镍催化剂作用下可选择性地断裂碳 - 氧键从而实现拆解。值得注意的是，这些聚合物对酸、碱和氧化剂表现出优异的化学稳定性，同时在催化剂存在下可降解为明确的、可再聚合的分子。我们的研究结果有助于开发通过设计实现化学可回收的下一代聚合物材料。
