Synthesis And Properties Of Microporous Polymers Containing Phthalazinone And Carbazole

The advantages of large specific surface area,low skeletal density,various structures,and porosity flexibility for rational design,endow microporous organic polymer materials with very good application potential in diverse fields.In this thesis,phthalazinone structure with heterocyclic,rigid,twisted andasymmetric charactors was chosen as the core unit.A series of different types of microporous organic polymer materials were prepared including hypercrosslinked microporous polymers built up by Friedel-Crafts reaction and conjugated microporous polymers prepared by oxidative coupling reaction.The main contents are exhibited as follows:?1?PMOP-Hs were obtained via hypercrosslinking reaction.The specific surface areas of PMOP-HA and PMOP-HB were 67 m² g^-1 and 85 m² g^-1,respectively.At 273 K/1 bar,PMOP-HB with side phenyl had a higher CO₂ uptake,reaching 6.8 wt%.The separation ratios of CO₂/N₂ and CO₂/CH₄ for PMOP-HB were 27 and 3.8,respectively,calculated by the initial slope method.?2?From the viewpoint of improving monomer reactivity and increasing reaction sites,a highly active rigid,heterocyclic,conjugated electron-rich carbazole group was introduced into structures.PCMOP-Hs was prepared by hypercrosslinking reaction,and PCMOP-H1 had a higher specific surface area(675 m² g^-1)as well as a higher CO₂ adsorption?273 K/1 bar,12.1wt%?,together with the CO₂/N₂ separation ratio up to 78?IAST method?.?3?The conjugated microporous polymer PCMOP-Os was prepared by oxidative coupling reaction.PCMOP-O1 had a higher specific surface area(472 m² g^-1).Similarly,its CO₂ adsorption capacity?8 wt%?was better,and the separation ratios of CO₂/N₂ and CO₂/CH₄ are 23 and 4.The good?-conjugated system endowed PCMOP-Os with nice luminescence properties so that PCMOP-Os had the certain selectivity for nitroaromatics.Among them,nitrobenzene has the highest quenching efficiency at low concentrations and2,4-dinitrotoluene has the highest quenching efficiency at high concentrations for PCMOP-Os.There is a prospect as a nitroaromatic compound detection materials.