钨青铜纳米材料薄膜的制备和电致变色功能研究

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1、东北师范大学博士学位论文钨青铜纳米材料薄膜的制备和电致变色功能研究姓名：薛博申请学位级别：博士专业：无机化学指导教师：彭军20070401AbstractElectrochromicisapartofcolorchangingfamily,itrelatetotheabsorptionofvisiblelight．Beingactivatedbyelectronicsignal，theelec批ochromicmaterialscouldchangetheirmacroscopicalcolor．Foralongtime,peoplewantt

2、outilizethechemicallyelectrochromicmaterialsintocommercialdisplaydevices，butsomelimitationsofthesematerialspreventtheirapplications．Theselimitationincluding：lowswitchspce也limitationincolorrange，stability,et．a1．Inrecentyear,thedevelopmentofthenanotechnologyprovidessomesolutio

3、ntosolvetheselimitations．Inthispaper,wefocusonthepreparationofthehexagonaltungstenbronzenanomaterialsfilmandit’SElectrochromicproperty．First,wesynthesizeHexagonalTungstenBronzenanomaterialsbylowtemperaturehydrathermalmethod．Theresultnanomaterialsarcmostlynanorods，lengthisat1

4、50—250ntoanddiametersiabout20-40hm．Forfilmassembling，wedispersethehexagonaltungstenbronzenanomaterialsincollidesolution．Thenanomaterialsabsorbthechargedioninthesolution,andcouldbeassembledbylayer-by-layerselfassemblymethodintomultilayerthinfilmunderelectrostaticinteraction．T

5、houghthisrouteline，wesynthesizedMo，Fe，CudopedhexagonaltungstenbronzenanomaterialsfilmwithPEIaspolyelectrolytes．Finally,webuiltuphexagonaltungstenbronzeandTi02allnanomaterialfilmsbyassemblythesematerialswhichwe他absorbedoppositechargediononthehexagonaltungstenbronzenanorodandn

6、02nanoparticle．respectively．Afterthedetailresearchonthesefilms，wefoundthatallthesefilmswcTewellassembled,andstillmaintaintheirphysicalandchemicalproperty．[Moo，05一HTB／PEl]4filmsdisplaygoodelectrochromicactivity．Ontheoxidationstatus，thefilmswerebleach．Byaddingnegativepotential

7、，thefilmsturntolightblue，andfinallydarkblue．Thecolorcontrastandelectrochromicefficiencyaleveryhigh,andtheswitchingspeedarefasterthanmostoftheelectrocbromicfilmswhichwerereported．Furthermore，thefilmsareverystable，Cangothroughmanytimesofreactionwithoutcontrastandefficiencylose

8、．Asthesecondstepoftheresearch,theFeandCudopedHTBfilmsexpandthecolorrangefro