资源描述：
《(jacs 2003)polyaniline nanofibers facile synthesis and chemical sensors》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、PublishedonWeb12/13/2002PolyanilineNanofibers:FacileSynthesisandChemicalSensorsJiaxingHuang,†ShabnamVirji,†,‡BruceH.Weiller,*,‡andRichardB.Kaner*,†DepartmentofChemistryandBiochemistry,ExoticMaterialsInstituteandCaliforniaNanoSystemsInstitute,UniVersityofCalifor
2、nia,LosAngeles,LosAngeles,California90095-1569,MaterialsProcessingandEValuationDepartment,SpaceMaterialsLaboratory,TheAerospaceCorporation,P.O.Box92957/M2-248,LosAngeles,California90009ReceivedSeptember2,2002;E-mail:(R.B.K.)kaner@chem.ucla.edu,(B.H.W.)bruce.h.w
3、eiller@aero.orgPolyanilineisaconductingpolymerthathasbeenwidelystudiedforelectronicandopticalapplications.1Unlikeotherconjugatedpolymers,polyanilinehasasimpleandreversibleacid/basedoping/dedopingchemistryenablingcontroloverpropertiessuchasfree-volume2,solubilit
4、y3,electricalconductivity,4andopticalactivity.5,6Inrecentyears,one-dimensional(1-D)polyanilinenanostructures,includingnanowires,rods,andtubeshavebeenstudiedwiththeexpectationthatsuchmaterialswillpossesstheadvantagesofbothlow-dimensionalsystemsandorganicconducto
5、rs.Synthesesofpolyaniline1-DnanostructureshavebeencarriedFigure1.(a)TEMimagesofpolyaniline/CSAnanofiberscastfromaoutbothchemicallyandelectrochemicallybypolymerizingthesuspensionafterdialysis.Theinsetshowsatwistedfiber(scalebar)50nm).(b)SEMsecondaryelectronimage
6、sofathinfilmdepositedonglassmonomerwiththeaidofeitheraªhardºoraªsoftºtemplate.fromthesuspension.Theinsetshowsacross-sectionalviewofthefilmonExamplesofhardtemplatesincludezeolitechannels,7track-etchedtheglasssubstrate(scalebar)200nm).polycarbonate8,9andanodizeda
7、lumina.8,10Softtemplates,suchassurfactants,11micelles,12-14liquidcrystals,15thiolatedcyclodex-trins,16andpolyacids,17arereportedtobecapableofdirectingthegrowthofpolyaniline1-Dnanostructureswithdiameterssmallerthan100nm.Physicalmethods,includingelectrospinning18
8、,19andmechanicalstretching,20havealsobeenusedtomakepolyanilinenanofibers.Inearlierwork,polyanilinefibrilsof100nmindiameter,withacompactmicrospheriodunderlayer,21werefoundon
