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1、華僑大學(xué)畢業(yè)論文(科學(xué)研究報(bào)告)題目:熒光性雙層膜的制備及其在汞離子檢測(cè)中的應(yīng)用院系:材料科學(xué)與工程學(xué)院專業(yè):環(huán)境工程專升本屆別:2003級(jí)學(xué)號(hào):0314S028姓名:劉美齡指導(dǎo)老師:孫向英教授華僑大學(xué)教務(wù)處二零零五年六月制目錄一麗言5二實(shí)驗(yàn)部分62」實(shí)驗(yàn)儀器與試劑62.1.1儀器62.1.2試劑62.2實(shí)驗(yàn)內(nèi)容72.2.1自組裝膜的制備7221.1組裝機(jī)理72.2.1.2Cys/Au的制備72.2.1.3HOX/Cys/Au自組裝膜的制備72.2.24輕基嗤嚇鋁(8?輕基嗤啪:汞)的合成82.2.3Al(OX)3/Cys/Au的
2、制備82.2.4自組裝膜熒光光譜測(cè)定82.2.5電化學(xué)實(shí)驗(yàn)92.2.6膜的結(jié)構(gòu)表征9三結(jié)果與討論93.18男基II奎啦和8■疑基座咻鋁溶液溶劑、激發(fā)波長(zhǎng)和pH的選擇93.1.1溶劑的選擇93.1.28■甕基噬咻和8■疑基嗪啦鋁溶液的激發(fā)波長(zhǎng)的選擇103.1.38■疑基唾麻和8■輕基唾咻鋁溶液pH值的選擇103.2自組裝膜優(yōu)化條件的選擇113.2.1.1半胱胺酸在金表而上t組裝的電化學(xué)表征113.2.1.2組裝DL—半胱氨酸濃度的選擇123.2.1.3組裝DL—半胱氨酸吋間的選擇123.2.1.4組裝DL—半胱氨酸pH值的選擇133
3、.2.2Cys/Au電極酸化時(shí)間和濃度的選擇133.2.38—疑基唾琳熒光物質(zhì)及其金屈螯合物的組裝133.2.3.1確定熒光物質(zhì)的激發(fā)波長(zhǎng)133.2.3.2浸泡吋間與熒光物質(zhì)濃度的選擇143.2.3.3pH值的選擇143.3自組裝雙層膜的熒光光譜153.4自組裝膜的表征163.4.1電極熒光光譜表征163.4.2膜的結(jié)構(gòu)表征163.58—疑基唾咻鋁、8—疑基唾臨溶液及自組裝膜穩(wěn)定性能的比較173.5.1溶液熒光強(qiáng)度的比較173.5.2穩(wěn)定性的比較172.4Hg2+的熒光傳感分析183.6.1汞離子的熒光傳感的分析特性18四結(jié)論20
4、五參考文獻(xiàn)21AbstractSelf-assembledmonolayer(SAMs)canbedesignedaccordingtoourdemandinmolecularlevehIthasmanymeritswhichdon5texitinothermethods?NowSAMshasbeenextensiveappliedinelectroanalyticalchemistry.Butitisfewreportedaboutitsapplicationinfluorescenceanalysis?Fluoiescence
5、analysisisanimportantandeffectivespectrumanalysis,IfwecancombinecombineSAMstechnologywithfluorescenceanalyticalmethodanddevelopanotherinterfacefluorescenceanalyticalmethod,Itwaseffectiveindiminishingthesamplevolumewithaviewofon-chipanalysis,thereforehaspromisingprospe
6、ctsinfluorescenceanalysisandchemicalsensor.Thefluorescenceintensityof8-hydroxyquinolineislow,inordertoimproveitsfluorescenceintensity,inthispaperwesynthesizedfluorescencereagent8-hydroxyquinolinealuminum(Al(OX)3Jtisaverysignificantclcctroluminsccntmaterialandhasattrac
7、tedgreatedattentionbothfromfundamentalandpotentialapplicationpointofview?Inthisexperiment,Theself^assembledbilayermembraneAl(OX)3/Cys/AuwasfabricatedviaelectrostaticactionwithDL-cysteine(Cys)monolayersongoldsurface.inordertocharacterizeditsstructure,wemakeuseofcyclicv
8、oltammetry(CV)incombinationwithX-rayPhotoelectronspcctra(XPS).Itwasfoundthattheself^assembledbilayermembraneAl(OX)3/Cys/Auha