聚合物對硫化物無機納米粒子的表面修飾與控制.pdf

1、上海交通大學碩士學位論文聚合物對硫化物無機納米粒子的表面修飾與控制姓名：劉姝紅申請學位級別：碩士專業(yè)：高分子化學與物理指導(dǎo)教師：錢雪峰2003.1.1上海交通大學碩士學位論文SURFACEMODIFICATIONANDCONTROLOFINORGANICNANOPARTICLESBYPOLYMERSABSTRACTNanoparticleshavebeeninvestigatedintensivelyduringthepastfewye

2、arsduetotheiruniquechemicalphysicalproperties.Whereasnanoparticlesarethemselveshighlyunstableintheabsenceofatrappingmediatheyagglomerateextremelyquick.Fthisreasonbondingofcappingagentstonanoparticlesisnecessarytoprovidec

3、hemicalpassivationcontrolsizemphologyalsotoimprovethesurfacestatewhichhassignificantinfluenceontheopticalelectronicpropertiesofnanoparticles.Inthisthesiswesynthesizedaseriesofpolymercappedinganicnanocrystalsviatheinsitur

4、outesinvestigatedtheimpactofpolymersonthesizemphologystabilityopticalpropertiesoftheobtainednanocrystals.CdSnanoparticlescappedbypoly(vinylpyrrolidone)(PVP)poly(vinylacetate)(PVAc)werepreparedthroughthehydrothermalproces

5、s.Xraydiffraction(XRD)transmissionelectronmicroscopy(TEM)ultravioletvisible(UVVis)fluescence(FL)spectroscopywereusedtoacterizethefinalproducts.FthePVPcappedCdSnanocrystalstheimpactofPVPonthestabilityopticalpropertiesofCd

6、SwasinvestigatedfthePVAccappedCdSnanocrystalstheinfluenceofreactiontimesolventsonCdScrystalphasewasstudied.Poly(styrenealtmaleicanhydride)(PSM)cappedCdSenanoparticlespoly(ethyleneoxidebpropyleneoxidebethyleneoxide)(P123)

7、cappedPbSnanoparticleswerepreparedatroomtemperature.XRDTEMUVVisfouriertransfminfraredspectroscopy(FTIR)wereusedtoacterizethefinalproducts.FthePSMcappedCdSenanocrystalstheinteractionbetweenPSMCdSewasstudiedthegrowthproces