Synthesis And Properties Of Cyclopropenium Cation-cored Porous Polymers

Due to the pressure from energy and environment,researchers are drived to find feasible solutions with new materials and construct a sustainable world.Porous material arrests much attention for its designable structures,large specific surface area and pore volume.With exploiting these characteristics,researchers have constructed some optimal mass transport materials,catalysts,energy storage and water purification materials.Then in the porous family,organic ionic porous polymer enriched the functionalitied for the charges on the polymer network.Therefore synthesis and explore new ionic polymers with potential applications become a hot topic.The purpose of this study means to exploit cyclopropenium cation cored porous polymer,determin the synthetic routine and potential applications.Following are the contents:1.To verify the feasibility and investigate the best polymerization conditions,synthesis of smallest aromatic ring as model compound was carried out with neutral monomers of aniline and tetrachlorocyclopropene.Then introduce trimethylsilyl group into piperazine,p-Phenylendiamine and4,4’-bianiline as leaving group to increase the reaction activities and the solubilities during the polymerization.Without additives and catalysts,the three precursors managed to polymerize with tetrochlorocyclopropene in dimethyl formamide（DMF）and obtain three different structure cyclopropenium cation cored porous polymer with basic characterizations.2.These polymers were systematically investigated the adsorption of non-polar nitrogen and polar carbon dioxide.Then the physical adsorption property was found to be weak but the charged network increase the adsorption of polar gas.c3.Explorations on ions exchange of the polymers conformed the high selective adsorptions of ionic dyes.The three polymers all are competent to commercial active carbon on dye adsorption.Especially the piperazine structured porous polymer exhibits extreme high adsorption on Congo Red（CR）and reaches up to 3480 mgg^-1 which is the highest value till now.And then the key influences on anionic dyes capture was discussed from the?-delocation structure and conformations of network.