金纳米棒与石墨烯复合.pdf

《金纳米棒与石墨烯复合.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、RSCAdvancesViewArticleOnlinePAPERViewJournal

2、ViewIssueGrapheneoxidewrappedgoldnanorodsforenhancedphoto-thermalstability†Citethis:RSCAdv.,2015,5,54971aabaQingliWei,HongNi,XueJinandJingYuan*Ananocompositeofgoldnanorodscoatedwithnanosizedgrapheneoxide(GO–GNRs)wasfabricatedinanammoniumhy

3、droxidesolutionanditsphotothermalstabilitywasinvestigateduponexposuretonear-infrared(NIR)lightirradiation.TheopticalpropertyandmorphologyoftheGO–GNRsnanohybridsremainedunchangedafter4repeatedNIRexposurecycles,whichisconsiderablystablecomparedwithReceived6thMay2015theas-synthesizedgol

4、dnanorods.Inaddition,theGO–GNRsnanohybridsshowedasuperbAccepted17thJune2015reproducibilityofphotothermalperformanceandanexcellentcolloidalstability.SuchgrapheneoxideDOI:10.1039/c5ra08333hmodifiedgoldnanorodswithenhancedphotothermalstabilityarewellsuitedforfurtherbiologicalwww.rsc.org/

5、advancesapplicationssuchassensing,bioimagingandphotothermaltherapy.Introductionhighcytotoxicityandphotothermalinstabilityoftheas-preparedGNRs.Cetyltrimethylammoniumbromide(CTAB),asLaserilluminationinthenearinfrared(NIR)regionprovidesastabilizingagentutilizedinthesynthesisofGNRs,ishig

6、hlytoxictocells,9whichseverelylimitsthebiologicalapplicationsmuchdeepertissuepenetrationwithminimaldamagetoofGNRs.Variousapproaches,suchasligandexchange10,11orsurroundinghealthytissueincomparisontolightintheUVandencapsulation12bynontoxicmolecules,havebeenexploredinvisibleregion.Nanop

7、articles,includinggoldnanoparticlesinvariousshapes1,2andcopper(II)suldenanocrystals,3haveanefforttoreducecytotoxicityofGNRs.Anothersignicantdistinctivesurface-plasmon-resonance(SPR)propertiesintheconcernisthephotothermalstabilityofGNRs.UponirradiationNIRregions.Theuniqueopticalprope

8、rtiescanbewellutilized,byNIRlaser,theheatgeneratedfromthephotothermaleffectduetothefactthatwhenirradiatedwithNIRlight,nano-oenmeltsGNRsintosolidsphereswhichresultsinapoorphotothermalstabilityanddisappearedNIR-SPRproperties.13particlescangenerateheatinsurroundingareas.Thetemper-aturei

9、ncreasescoul