新穎多孔有機高分子與共價有機骨架之合成

多孔有機高分子 ( Porous Organic Polymers, POPs )為具有孔隙的高分子材料，而它們已被廣泛用於各種應用，例如:氣體存儲和分離，能量存儲，催化和藥物輸送。其中共價有機骨架 (Covalent Organic Frameworks, COFs)是一種具有結晶性且剛性結構的高分子孔洞材料，利用有機組元經由可逆的共價鍵連接而成，其中共價鍵在此過程中可以「自我修復」(self-healing)以及「自我校正」( self-calibration )，形成熱力學最穩定的結構，另外共價有機骨架可被模組化設計，利用有機合成調整其官能基、孔洞大小與幾何結構，因此具有發展的潛力。本研究將利用溶劑熱合成法來製備新型共價有機骨架和多孔有機高分子，在動態共價化學概念下，利用不同的有機反應條件，探討影響骨架結晶性的因素，另外結構的性質將利用粉末繞射儀、氣體吸附分析儀、紅外線光譜儀…等儀器鑑定。

關鍵字

孔洞材料；多孔有機高分子；共價有機骨架

並列摘要

Porous organic polymers (POPs) are a kind of polymeric materials possessing permanent porosities. They have been widely utilized for various applications such as gas storage and separations, energy storage, catalysis, and drug delivery. Among them, covalent organic frameworks (COFs) are highly crystalline with rigid structures and pores. They are built from discrete organic linkers via reversible covalent bond formation. The connecting covalent bonds can be broken and reformed, as they allow for error-correction and proof-reading that can form the most thermodynamically stable products. COFs can be synthetically tuned for various pore sizes, functional groups, and geometries for various applications. Therefore, they have properties superior to the conventional porous materials. In this study, we have synthesized several novel POPs and COFs via solvothermal reactions. Based on dynamic covalent chemistry, we comprehensively examined various reaction conditions to improve the crystallinity of porous materials. The resulting POPs and COFs were investigated by powder X-ray diffraction, FT-IR, and gas sorption analysis, etc.