Nanoporous Benzoxazole Networks by Silylated Monomers, Their Exceptional Thermal Stability, and Carbon Dioxide Capture Capacity

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• 作者：Hasmukh A. Patel ; Dongah Ko ; Cafer T. Yavuz
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：December 9, 2014
• 年：2014
• 卷：26
• 期：23
• 页码：6729-6733
• 全文大小：314K
• ISSN：1520-5002

文摘

The pursuit of synthetic routes for design and preparation of nanoporous polymeric networks with inherent permanent microporosity and functionality through bottom-up methodologies remains a driving force in developing CO₂-philic materials. We report nanoporous, processable, benzoxazole-linked covalent organic polymers (Box-COPs) that show exceptional thermal stability up to 576 掳C. Box-COPs can be formed into films thanks to the silylation that is used to guide polymeric network formation. Surface areas of up to 606 m² g^鈥? and narrow pore sizes of 4.36 脜 were observed with a CO₂ uptake capacity of 139.6 mg g^鈥? at 273 K and 1 bar. Box-COPs were stable in boiling water for a week without deteriorating CO₂ capture capacity.