Advanced Composites Made by the Layer-by-Layer (LBL) Assembly of Nanomaterials

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1、AdvancedCompositesMadebytheLayer-by-Layer(LBL)AssemblyofNanomaterialsPaulPodsiadlo1,BongSupShim1,ArifA.Mamedov2,andNicholasA.Kotov1,3,41DepartmentofChemicalEngineering,UniversityofMichigan,AnnArbor,MI,USA2ARGOAR,LLC,Reston,VA,USA3DepartmentofMaterialsScienceandE

2、ngineering,UniversityofMichigan,AnnArbor,MI,USA4DepartmentofBiomedicalEngineering,UniversityofMichigan,AnnArbor,MI,USAbeingcurrentlyexplored,thelayer-by-layer(LBL)assembly1Introduction1techniquestandsoutasoneofthesimplestandmostversatile2LBLAssembliesofClays2met

3、hods.Insimplestofthecases,thetechniqueisamethodofalternatingdepositionofoppositelychargedcomponents3LBLAssembliesofCarbonNanotubes7fromdilutesolutionsordispersionsonasuitablesubstrate.4Conclusions10SincethefirstdemonstrationofLBLassemblybyIler(Iler,References1019

4、66)andlaterbyDecheretal.(1997)inthe1990s,theLBLfieldhasexperiencedrapidgrowth.Thetechniquehasquicklybecomeoneofthemostpopularandwell-establishedmethodsforthepreparationofmultifunctionalthinfilmsnot1INTRODUCTIONonlythankstoitssimplicity,butalsorobustnessandversatil

5、-ity.Introductionofhybridorganic/inorganicfilmshasfurtherNanotechnologyhasgrowntobeanareaofresearchwithenrichedthefunctionalityandapplicabilityofLBL.tremendousscientificandeconomicpotential.Nanomateri-WhiletheLBLfieldclearlycoversavastnumberofmolec-alscannowadaysbe

6、synthesizedwithgreatcontrolinrespectularspeciesandarchitectures,inthischapterweconcentratetotheircomposition,forexample,inorganic,organic,poly-onthestate-of-the-artinsynthesisandpropertiesofmulti-meric,biological,aswellasstructureandfunction.Whilelayerhybridfilms

7、basedontwocommerciallyavailablefunc-thereisstillmuchworktobedoneinthebasicsynthesisandtionalnanomaterials:theclaynanosheetsandcarbonnan-characterizationofthebuildingblocks,thenextchallengeotubes(CNTs).Thesetwobuildingblockspossessstructuralofthefieldistransferrin

8、gthenanoscalepropertiesoftheseandphysicochemicalpropertiesuniquetoeach,thusenablingmaterialsintomacroscalestructures.preparationofvarietyoffunctionalcomposites.Moreov