Synthesis And Applications Of New Ionic Organic Polymers

Our studies aim at combining the flexibility of ionic liquids with excellent structural features of framework material, and our goal is to prepare a new ionic organic polymer with CO₂ adsorption and catalytic of multiple function. The CO₂ adsorption performance, catalytic performance and the selectivity of CO₂/N₂ because of existence of azo bond of are preliminary studied. The main research contents and results are as follows:1. In order to make materials more larger free volume, porosity, specific surface area and higher CO₂ adsorption amount, five kinds of organic compounds with the three-dimensional structure: Tetraphenylmethane, tetrakis（4-bromophenyl）methane, tetrakis（4-carboxyphenyl）methane, tetrakis（4-nitrophenyl）methane, tetrakis（4-aminophenyl）methane were synthesized and characterized. Nitrogen-rich polymers have higher adsorption quantity of CO₂, so 5,10,15,20-tetra-4-pyridylporphyrin and 4,4’,5,5’-tetranitro-2,2’-biimidazole were synthesized and characterized.2. According to the diversity and flexibility of ionic liquids, and the function of adsorption and catalysis CO₂, a series of ionic liquids containing halogen, nitrile, nitro functional groups: 1,3-bis-（4-bromobenzyl）imidazolium chloride, 1,3-bis-（4-cyanophenyl）imidazolium chloride, 1,3-bis-（4-nitrobenzyl）imidazolium bromide/chloride were synthesized and characterized.3. We prepared three kinds of materials by polymerizating monomers which have been prepared.（1） 5,10,15,20-Tetrakis（4-pyridyl）porphine and 1,3-bis-（4-bromophenyl）imidazolium chloride polymerized to nitrogen-rich ionic poly（porphyrin and imidazole-based） complex（PPIC）. The ploymer were characterized by IR, X-ray power diffraction, SEM, TEM, EDS, BET. The CO₂ adsorption amount and the catalytic performance of PPIC have been investigated.（2） 5,10,15,20-Tetrakis（4-pyridyl）porphine quaternized by 2-bromoethylamine hydrobromide and 4,4’,5,5’-tetranitro-2,2’-biimidazole polymerized to nitrogen-rich ionic poly（porphyrin and 2,2’-biimidazole-based） complex（PPBIC） PPBIC-Br. Generate PPBIC-PF₆ through the ionic exchange by KPF₆. These ploymers were characterized by IR, SEM, EDS. The CO₂ adsorption amount, selectivity of CO₂/N₂ and the catalytic performance of PPBIC have been investigated.（3） 5,10,15,20-Tetrakis（4-pyridyl）porphine quaternized by 2-bromoethylamine hydrobromide and tetrakis（4-nitrophenyl）methane polymerized to nitrogen-rich ionic poly（porphyrin and benzene-based） complex（PPBC） PPBC-Br. Generate PPBC-PF6 through the ionic exchange by KPF₆. These ploymers were characterized by IR, SEM, EDS. The CO₂ adsorption amount, selectivity of CO₂/N₂ and the catalytic performance of PPBC have been investigated.