柔性聚苯胺基水凝膠電化學(xué)性能及光敏性能的研究

柔性聚苯胺基水凝膠電化學(xué)性能及光敏性能的研究摘要：本文研究了柔性聚苯胺基水凝膠的電化學(xué)性能及光敏性能。首先采用化學(xué)氧化法制備了聚苯胺水凝膠，并通過掃描電子顯微鏡、紅外光譜、熱重分析等多種技術(shù)進(jìn)行了表征。結(jié)果顯示，所得水凝膠結(jié)構(gòu)致密、表面平整，具有良好的熱穩(wěn)定性和紅外吸收特征。接著通過旋涂法將水凝膠均勻涂覆在ITO電極上，制備出聚苯胺基水凝膠電極，并對(duì)其進(jìn)行了循環(huán)伏安及電化學(xué)阻抗譜測(cè)試。結(jié)果表明，聚苯胺基水凝膠電極具有較高的比電容值和良好的耐久性能。最后，將聚苯胺基水凝膠電極浸泡在羅丹明B溶液中，通過紫外光照射實(shí)現(xiàn)了光敏性能的測(cè)試，并研究了不同光照強(qiáng)度和時(shí)間對(duì)電化學(xué)屬性的影響。研究結(jié)果表明，聚苯胺基水凝膠電極在光敏響應(yīng)方面表現(xiàn)出良好的穩(wěn)定性和重復(fù)性。本研究為柔性電子器件的制備提供了一定的理論依據(jù)和實(shí)驗(yàn)參考。

關(guān)鍵詞：聚苯胺基水凝膠、電化學(xué)性能、光敏性能、柔性電子器件。

ResearchonElectrochemicalandPhotosensitivePropertiesofFlexiblePolyanilineHydrogel

Abstract:Inthispaper,theelectrochemicalandphotosensitivepropertiesofflexiblepolyanilinehydrogelwerestudied.Firstly,thepolyanilinehydrogelwaspreparedbychemicaloxidationmethod,andcharacterizedbyscanningelectronmicroscopy,infraredspectrumandthermogravimetricanalysis.Theresultsshowedthatthehydrogelhadadensestructureandasmoothsurface,andexhibitedgoodthermalstabilityandinfraredabsorptioncharacteristics.Then,thehydrogelwasuniformlycoatedontheITOelectrodebyspincoatingmethodtomakepolyanilinehydrogelelectrode,anditscyclicvoltammetryandelectrochemicalimpedancespectroscopyweretested.Theresultsshowedthatthepolyanilinehydrogelelectrodehadahigherspecificcapacitancevalueandgooddurability.Finally,thepolyanilinehydrogelelectrodewasimmersedinrhodamineBsolution,andthephotosensitivepropertywastestedbyUVirradiation.Theeffectsofdifferentlightintensitiesandirradiationtimeonelectrochemicalpropertieswerealsostudied.Theresultsshowedthatthepolyanilinehydrogelelectrodeshowedgoodstabilityandrepeatabilityinphotoresponsiveproperties.Thisstudyprovidesacertaintheoreticalbasisandexperimentalreferenceforthepreparationofflexibleelectronicdevices.

Keywords:polyanilinehydrogel,electrochemicalproperty,photosensitiveproperty,flexibleelectronicdevicesThedevelopmentofflexibleelectronicdeviceshasledtoagrowinginterestinthepreparationofnovelmaterialswithuniqueproperties.Polyanilinehydrogelhasattractedattentionduetoitsexcellentelectricalconductivity,highspecificsurfacearea,andgoodbiocompatibility.Inthisstudy,weinvestigatedtheelectrochemicalandphotoresponsivepropertiesofpolyanilinehydrogelelectrode.

Thecyclicvoltammetry(CV)resultsdemonstratedthatthepolyanilinehydrogelelectrodeexhibitedreversibleredoxbehavior,suggestinggoodelectrochemicalperformance.Theelectrochemicalimpedancespectroscopy(EIS)resultsshowedthatthepolyanilinehydrogelelectrodehadalowerchargetransferresistancecomparedtopolyanilinenanofiberelectrode,indicatingitsenhancedconductivity.

Furthermore,weinvestigatedthephotoresponsivepropertiesofthepolyanilinehydrogelelectrodeunderdifferentlightintensitiesandirradiationtime.Theresultsshowedthatthephotocurrentresponseofthepolyanilinehydrogelelectrodeincreasedwithincreasinglightintensity,andtheresponsetimewassignificantlyimprovedwithprolongedirradiationtime.Thesefindingssuggestthatthepolyanilinehydrogelelectrodehasgoodphotoresponsivepropertiesandcanbepotentiallyusedinphotoelectronicdevices.

Inconclusion,thepolyanilinehydrogelelectrodeexhibitedgoodelectrochemicalperformanceandphotoresponsiveproperties.Theresultsofthisstudyprovideatheoreticalbasisandexperimentalreferenceforthepreparationofflexibleelectronicdevices,andcontributetothedevelopmentofnovelfunctionalmaterialsforvariousapplicationsInadditiontotheelectrochemicalandphotoresponsiveproperties,thepolyanilinehydrogelelectrodealsoshowspotentialforotherapplicationssuchasenergystorageandenvironmentalremediation.Asanelectrodematerialforenergystoragedevices,thehighspecificsurfaceareaandporousstructureofthehydrogelelectrodecanincreasethecapacitanceandimprovetherateperformance.Theconductivityofpolyanilinealsoallowsforfastchargeanddischargerates,makingitapromisingmaterialforsupercapacitors.

Moreover,theuniquepropertiesofthepolyanilinehydrogelelectrodecanbeexploitedforenvironmentalremediationapplications.Thehighsurfaceareaandporousstructurecanbeusedtoremoveheavymetalsandpollutantsfromwater,whilethephotoresponsivepropertiescanbeutilizedtodegradeorganiccontaminantsusingphotocatalyticprocesses.

Overall,thepolyanilinehydrogelelectrodeisaversatilematerialthatcanbeusedforvariousapplicationsduetoitselectrochemical,photoresponsive,andenvironmentalremediationproperties.FurtherresearchisneededtoexploreitsfullpotentialandoptimizeitsperformanceforspecificapplicationsInadditiontotheapplicationsmentionedabove,polyanilinehydrogelelectrodesalsohavepotentialinenergystorageandconversiondevices.Polyanilinehasbeenshowntohavehighspecificcapacitance,makingitapromisingmaterialforsupercapacitorelectrodes.The3Dstructureofthehydrogelwouldalsoprovidealargesurfaceareaforelectrode-electrolyteinterfaces,furtherenhancingitscapacitance.

Polyanilinehydrogelscanalsobeusedassensitizersindye-sensitizedsolarcells(DSSCs).DSSCsareanemergingphotovoltaictechnologythatutilizesadye-coatedelectrodetocapturesunlightandconvertitintoelectricity.Polyanilinehydrogelshavebeenshowntohaveefficientlightharvestingandchargetransportproperties,makingthemapromisingmaterialforDSSCs.

Anotherpotentialapplicationofpolyanilinehydrogelelectrodesisinsensorsandbiosensors.Duetotheconductivityandresponsivenessofpolyanilinetoanalytes,itcanbeusedasatransducertodetectandquantifysmallmolecules,ions,andbiomolecules.The3Dstructureofthehydrogelcanalsofacilitatemasstransfer,makingitausefulmaterialforbiosensingapplications.

Finally,polyanilinehydrogelelectrodeshavepotentialintissueengineeringandregenerativemedicine.Thehydrogelisbiocompatibleandcanbefunctionalizedwithbioactivemoleculestopromotecelladhesion,proliferation,anddifferentiation.Theconductivityofpolyanilinecanalsobeutilizedtostimulatecellularactivityandpromotetissueregeneration.

Inconclusion,polyanilin