2-氨基-5-巯基-1，3，4-噻二唑在金属表面组装构效关系的表面增强拉曼光谱和电化学分析

《2-氨基-5-巯基-1，3，4-噻二唑在金属表面组装构效关系的表面增强拉曼光谱和电化学分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、上海师范大学硕士学位论文AbstractSurfaceEnhancedRamanScatteringhasbeenusedasasensitivemethodinsurfaceanalyticalchemistry．Itisappfiedasaverypowerfulanalyticaltechniquetoinvestigatetheinteractio璐ofadsorbatewithmetallicsurface．Electrochemicalin．situSERSisoneofthemostcommontechniquewhichcombinestheSERStech

2、niquewiththeelectrochemicalmethod．Theadsorptionbehaviorandelectrochemicalprocessofthemonolayersformedonthemetallicsurfacecanbeobservedeasilybymeansofthistechnique．Self-assembledmonolayers(SaMs)techniqueisregardedasareasonablemethodtocontrollablyconstructanorderly-uniformlayersthatgallprovi

3、deasimpleinterracialmodelforsurfaceanalysis．Electrochemicalimpedancespectroscopy(EIS)isbefievedasatoolforcorrosionstudywhichhasbeenextensivelyusedincorrosioninhibitorevaluation．ItisstronglyapprovedofEISinprovidinginformationonthecorrosionandprotectionmechanisms，especiallyforalladsorbedfilm

4、．Recently，SERS，SAMsandelectrochemicalmethodhavebeenusedintheinvestigationofcorrosionscience．Inthisthesis，SERS，．in-situSERSandSAMstechniqueswereconductedtoobtainthespectrumofthe2-Amino--5-mercapto-1；3，4-thiadiazole(AMT)，AMT／sodiumsaltphyticacidandN’·(4，6一dimethyl-pyrimide)-N-cinnamoylthiore

5、as(CAS-1)monolayersformedatmetallicsurface．ThecorrosionabilityoftheformedmonolayersonthesurfacewasdeterminedbyEISandtafelplot．Themaincontentsofthisthesisincludethefollowingparts：(1)ThestructureandelectrochemicalbehaviorofAMTself-assembledmonolayersformedonthegoldsurfacewasobservedbySERStec

6、hniques．Concentration-dependentSERSdateshowedthatwhenAMTmonolayersformedunderlowconcentration('／．5×10-6molL．1)，thethiadiazoleringapproachestowardthegoldsurfaceasaflatmodeviatheadsorptivesitesinvolvingtwosulfuratoms，twonitrogenatomsofthethiadiazoleringandthenitrogeninNH2．Withtheconcentratio

7、nincreasingto7．5X10"4reelL-1，AMTmoleculesturnedtotiltedorientationaUachontothegoldsurfacebythetwosulfuratomsandanitrogenatomintheaminotoformmonolayers．In-situSERSindicatedthatatopenpotential，AMTmonolayersformedonthegoldsurfaceviatheadsorptivesitesinvolvingtwos