Synthesis Of Novel Organic Porous Materials And Their Supercapacitive Properties

Recent years,a large quantity of organic porous materials,including covalent organic frameworks?COFs?,conjugated microporous polymers?CMPs?,hyper crosslinked polymers?HCPs?,polymers of intrinsic microporosity?PIMs?,porous aromatic frameworks?PAFs?,etc.,have been designed,synthesized and applied in many fields like gas adsorption and separation,heterogeneous catalysis,energy storage,optoelectronic devices,chemical sensor and so on.Thereinto,COFs are a class of crystalline porous materials with low density and perfect thermal stability,good porosity and crystallinity.And CMPs are a class of microporous polymers with?conjugation structure,high specific surface area,controllable pore structure,excellent thermal stability and chemical stability.In this paper,novel COFs and CMPs were successfully designed and synthesized.Their structures and properties were systematically investigated.They showed great potential in carbon dioxide adsorption and super capacitor applications.Firstly,I reported the synthesis of a two-dimensional covalent organic framework,TpPa-COF?MW?,using a rapid microwave-assisted solvothermal method in significantly less time and high yield under a relatively low temperature.This COF was found to have a high crystallinity,high stability,high BET surface area,and a high carbon dioxide capacity(5.1 mmol g^-1 at 273 K and 1 bar).Then,I demonstrated the design and synthesis of a novel?-ketoenamine-linked conjugated microporous polymer,KECMP-1?CE?,via Schiff base condensation.KECMP-1?CE?exhibited a high BET specific surface area(691 m² g^-1)and high physicochemical stability.And it showed excellent carbon dioxide capacity?10.5 wt%at 273 K and 1 bar?and heat of high adsorption(34.6 kJ mol^-1).Finally,I reported the synthesis of novel?-ketoenamine-linked conjugated microporous polymer,KECMP-1?MW?,via Schiff base microwave-assisted condensation.The resultant KECMP-1 showed excellent porosity and great stability.Due to the high micro-porosity and abundant N-H sites on the surface of the pore walls,KECMP-1?MW?exhibited outstanding energy storage performance,with not only excellent current density as high as 200 A g^-1,but also great cycling stability and long cycle life.