碳量子点CQDs的合成

TheSynthesisof

CarbonQuantumDots(CQDs)speaker：叶江林组员：汪冬冬叶江林王长来章小同杜娟高峰魏绍娟

郭亚丽潘世友刘克潘祺材料合成化学2015-1-51.1、Introduction2、Syntheticapproaches2.1Arcdischargemethod2.2Chemicalablation2.3Electrochemicalcarbonization2.4Laserablation2.5Microwaveirradiation2.6Hydrothermal/solvothermal2.7TemplateContent3、Futuretarget2.1.IntroductionCarbonquantumdots(CQDs)areanewclassofquantumdotsmaterialsAdvantage:1)Lowtoxicity,2)Biocompatibility,3)Lowcost,4)Chemicalinertness,5)Fluorescenceproperties.……Ref.1YoufuWang,AiguoHu.J.Mater.Chem.C,2014,2,6921–69392ShiYingLim,WeiShenandZhiqiangGao,Chem.Soc.Rew.,2015,362-281InorganicquantumdotsCarbonquantumdots3.Greatpotentialapplications4.2.Syntheticmethods

ManymethodshavebeenproposedtoprepareCQDsduringthelastdecade,whichcanberoughlyclassifiedinto“Top-down”and“Bottom-up”approaches.Ref.YoufuWang,AiguoHu.J.Mater.Chem.C,2014,2,6921–69395.ArcdischargesootintroducecarboxylfunctionalgroupssuspensionCQDsRef.

XuXY，RayR，GuYL，etal．JAmChemSoc，2004，126(40):12736-12737.oxidativegelelectrophoresismethodextractionArcprocessing2.1Arcdischargemethod6.carbonaceousmaterialscarbonsource2.2ChemicalablationH2SO4HNO3Ref.1L.Shen,L.Zhang,M.Chen,X.ChenandJ.Wang,Carbon,2013,55,343.2H.PengandJ.Travas-Sejdic,Chem.Mater.,2009,21,55637.ElectrochemicalcarbonizationCQDssolutionadegassedacetonitrilesolutionwithTBAPCycledappliedpotentialPurificationprocessevaporatingtheacetonitrilefromsolutiondissolvingtheremainingsolidinwaterdialyzingtheaqueoussolutionwithacelluloseestermembranebagThreeelectrodes2.3ElectrochemicalRef:[1]ZhengL,ChiY,DongY,etal.JAmChemSoc,2009,131(13):4564-4565..[2]WangYF,HuAJ.J.Mater.Chem.C,2014,2,6921CQDs8.Experimentalconfiguration9.graphitepowdercementcarbontargetCarbonprecursor

Laser

AcidtreatedRef.SunYP.

etal.JAmChemSoc.2006,

128(24):7756-7757.2.4Laserablation10.2.5Microwaveirradiationcolor:transparent(l)brown(l)dark-brown(s)(indicatingtheformationofC-dots)transferredtovacuumovenandheatedadddistilledwatertoformaqueoussolutionpurifiedinacentrifugeRef.ZhuH,WangX,LiY,etal.Chem.Commun.,2009(34):5118-5Hydrothermal/SolveothermalRef.S.Sahu,B.Behera,T.K.MaitiandS.Mohapatra,Chem.Commun.,2012,48,8835.saccharosecitricacid12.Ref.ZhuS,MengQ,WangL,etal.AngewandteChemie,2013,125(14):4045-4049.

fluorescencequench13.2.7TemplateChooseasuitabletemplate

synthesisCQDsAcidetchingtemplateCQDsRef.RuiliLiuet.alAngew.Chem.Int.Ed.2009(48):4598–460114.TEMimagesofCQDs:uniformityparti