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The Synthesis and Properties of Nanoscale Ionic Materials Based on Graphene  
The Synthesis and Properties of Nanoscale Ionic Materials Based on Graphene
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所属学科: 高分子化学
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Nanoscaleionicmaterials(NIMs)areatypeoforganic-inorganichybridmaterialsconsistingofinorganicnanocores,chargedcoronacovalentlyattachedtothecore9andoppositelychargedcanopyelectrostaticallycoupledwiththecorona[l].Thiskindofself-suspended,nanoparticle-ladenmaterialscanshowtheliquid-likeflowbehaviorintheabsenceofsolvents.Here,wepresentthepreparationandphysicalcharacterizationresultsofgraphenebasedonNIMs,whichstartedfromthehydroxyl-functionalizedgraphene(G-OH)obtainedbyutilizingnitrenechemistryE21.Thetheologicalpropertiesofourgraphene-NIMscouldbetunedinawiderangefromNewtonianfluidtosoftglassysolidbyvaryingthevolumefractionofcanopy.Thegraphene-NIMalsoshowedaviscoelasticbehaviorthatwasdifferentfromthatofthephysicalmixtureofG-OHandcanopyoligomerwiththesamesolidcontent.Thecrystallizationtemperatureofcanopyingraphene-NIMsdecreasedalotcomparedtothatofcanopyinthephysicalmixtures.Moreover,acoldcrystallizationprocessappearedduringtheheatingcycleforgraphene-NIMs,whichdidnotexistforthephysicalmixtures.Thesephenomenarevealedthatthespecificionicinteractioninthiskindofnanoscalefluidshadsignificantinfluencesontheirflowandthermalpropertiesc3].Furthermore,theobtainedgraphene-NIMcouldbewelldispersedandbestableformonthsinwater,andmanyorganicsolventswithbothhighandlowpolarity,whichindicateditsamphiphilicnature.Theseuniquepropertiesassociatedwithgraphene-NIMscanhelptoopenupnewapplicationsinmanyfieldsbasedongraphenematerialinthefuture.
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