| Graphene had been attracted by more and more materials scientists due to its excellentoptical, electrical, thermal stability and mechanical properties. But researches on graphenehybrid organic microporous polymer has only just begun recently. It will lead a new cross-research field of graphene and microporous polymer materials.Microporous organic polymers have high surface areas, as well as have well thermalstability. Therefore they can be used for separation, adsorption, and as catalyst support.Graphene has amount of conjugated structure, edges, rippling wrinkle and defects. Thoseconjugated structure is analogue of benzenyl structure. The structure can be used to make newhybrid materials by chemical reaction. Currently Friedel-Crafts alkylation and Scholl couplingreaction were available using to prepare microporous polymer. Here they can be used to obtaingraphene hybrid microporous organic polymer composite, because monomers containingbenzene ring, heterocyclic ring or some compounds like these can be used in the two reactionsto knit into networks. Easy controlled reaction and rich sources of monomers, can make theseporous polymers obtaining different pore structure by different reaction and monomers. IfFriedel-Crafts alkylation and Scholl coupling reaction can be used to build graphenemicroporous homo-polymer and graphene microporous co-polymer successfully. It willextend not only the application field of the two reaction but also having promising applicationof graphene hybrid microporous polymers in gas storage and super-capacitor due to highspecific surface area and conductivity at the same time.Therefore, research work in present includes:(1) Firstly, prepared microporous homo-polymer and co-polymer with commercialmultilayer graphene only, multilayer graphene and1,3,5-triphenylbenzene by using Friedel-Crafts alkylation and Scholl coupling reaction, the results showed that multilayer graphene ismore suitable to copolymerize with1,3,5-triphenylbenzene to form graphene hybridmicroporous polymer. By changing the ratio of multilayer graphene to1,3,5-triphenylbenzene,a series of porous hybrid polymers GE-Ph3-F and GE-Ph3-S can be prepared. Althoughcapacitance performance has not been improved, but the specific surface area has been greatlyimproved. The surface area of both kinds of hybrid microporous polymers tested by poresurface area analyzer ASAP2020M, which showed that GE-Ph3-F1and GE-Ph3-S5is thehighest in each series, whose surface area was up to1371m2/g and1290m2/g respectively.(2) In order to improve the pore property and capacitance property, secondly, functionalizedgraphene with benzyl group was prepared by Hummer method and reduced graphene oxide indiazonium salt to obtain good dispersion stability. Then, prepared microporous homo-polymerand co-polymer with functionalized graphene only, functionalized graphene and1,3,5- triphenylbenzene by using the Friedel-Crafts alkylation reaction and Scholl coupling reaction.In the end, the structure and the properties of microporous polymers were tested. The resultsshowed that the microporous polymer fRGO-S1produced by Scholl coupling reaction hashigher surface area591m2/g, which higher than surface area of GE-S1of41m2/g synthesizedby the same reaction. The co-polymer fRGO-Ph3-S4has the highest surface area934m2/g andfRGO-Ph3-S3has the highest capacitance capacitor175.9F/g among these polymers, whichwas higher than that of fRGO of56.4F/g. |
