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1、Vol437
2、1September2005
3、doi:10.1038/nature03968LETTERSAgeneralstrategyfornanocrystalsynthesis1,21,21,21,2XunWang,JingZhuang,QingPeng&YadongLiNewstrategiesformaterialsfabricationareoffundamentalof,0.22nm,whichcorrespondstothe(111)planesofface-centred112importanceintheadvancementofscienceandtec
4、hnology.cubicIr.EDS(energydispersivespectroscopy)microanalysisand13,141517OrganometallicandotherorganicsolutionphasesyntheticpowderXRD(X-raydiffraction)(Fig.2a)measurementhaveprovenrouteshaveenabledthesynthesisoffunctionalinorganicquan-thesuccessfulsynthesisofface-centredcubicstructuredAg(J
5、CPDStumdotsornanocrystals.Thesenanomaterialsformthebuilding4-783),Au(JCPDS4-784),Pd(JCPDS46-1043),Pt(JCPDS4-802),blocksfornewbottom-upapproachestomaterialsassemblyforaRh(JCPDS5-685),Ir(JCPDS46-1044)andhexagonalRu(JCPDSrangeofuses;suchmaterialsalsoreceiveattentionbecauseoftheir6-663).1821int
6、rinsicsize-dependentpropertiesandresultingapplications.Theprimaryreactioninthepreparationofnoblemetalnanocrys-Herewereportaunifiedapproachtothesynthesisofalargetalsthroughthisliquid–solid–solution(LSS)processinvolvedthevarietyofnanocrystalswithdifferentchemistriesandpropertiesreductionofnobl
7、emetalionsbyethanolattheinterfacesofmetalandwithlowdispersity;theseincludenoblemetal,magnetic/linoleate(solid),ethanol–linoleicacidliquidphase(liquid)anddielectric,semiconducting,rare-earthfluorescent,biomedical,water–ethanolsolutions(solution)atdifferentdesignatedtempera-organicoptoelectron
8、icsemiconductingandconductingpolymertures(Fig.3).Aftertheaqueoussolutionofnoblemetalions,sodiumnanoparticles.Thisstrategyisbasedonageneralphasetransferlinoleate(oranothersodiumstearate)andthemixtureoflinoleicandseparationmechanismoccurringattheinterfacesoftheacid(oranotherfattyacid)andethan
9、olwereaddedintothevesselinliquid,solidandsolutionphasespresentduringthesynthesis.order.Threephasesformedinthissystem:sodiumlinoleate(solid),Webelieveourmethodologyprovidesasimpleandconvenienttheliquidphaseofethanolandlinoleicacid(liquid),andthewater–rout
