基于π-πH-键协同作用制备含芘小分子增强高韧性石墨烯纸（英文）-豆柴文库

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基于π-πH-键协同作用制备含芘小分子增强高韧性石墨烯纸（英文）
Title:PreparationofPyrene-FunctionalizedGraphenePaperwithEnhancedToughnessviaπ-πH-BondCooperativeInteraction
Abstract:
Graphenehasattractedconsiderableattentionduetoitsexcellentmechanical,electrical,andthermalproperties.However,puregrapheneexhibitslimitedtoughness,whichhindersitspracticalapplications.Inthisstudy,weproposeanovelapproachtoenhancethetoughnessofgraphenepaperbyintroducingpyrenefunctionalgroupsviaπ-πH-bondcooperativeinteraction.Theresultingpyrene-functionalizedgraphenepaperexhibitsenhancedmechanicalproperties,makingitapromisingmaterialforvariousapplicationsinfieldssuchasflexibleelectronics,energystorage,andreinforcementcomposites.
1.Introduction:
Graphene,atwo-dimensionalmaterialcomposedofasinglelayerofcarbonatomsarrangedinahexagonallattice,possessesextraordinarypropertiessuchashighelectricalconductivity,mechanicalstrength,andthermalconductivity.However,theinherentlylowtoughnessofpuregraphenelimitsitspracticalapplicationsinareassuchasflexibleelectronics,energystoragedevices,andreinforcementcomposites.Therefore,itisimperativetodevelopstrategiestoimprovethemechanicalpropertiesofgraphene-basedmaterials.
2.π-πH-BondCooperativeInteraction:
Theπ-πH-bondcooperativeinteraction,whichcombinestheπ-πstackinginteractionandhydrogenbonds,hasemergedasaneffectiveapproachtoenhancethemechanicalpropertiesofmaterials.Pyrene,apolycyclicaromatichydrocarboncontainingmultiplebenzenerings,hasastrongpropensityforπ-πstacking.Byintroducingpyrenefunctionalgroupsintographene,theπ-πH-bondcooperativeinteractioncanbeestablishedbetweentheneighboringpyrenemoieties,leadingtoenhancedinterfacialbondingandimprovedmechanicalperformance.
3.ExperimentalProcedure:
Inourstudy,grapheneoxide(GO)wasinitiallypreparedbychemicalexfoliationofgraphiteflakes.Thepyrene-functionalizedgrapheneoxide(P-GO)wasthensynthesizedthroughasimplereactionbetweenGOandpyrenemolecules.TheP-GOsolutionwassubsequentlyfilteredanddriedtoobtainthepyrene-functionalizedgraphenepaper.
4.Characterizatio