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时间:2019-03-07
《新型含稠合外环的氟硼二吡咯类碱性环境下的ph荧光探针的合成和光谱性质》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、第28卷第8期应用化学Vol.28No.82011年8月CHINESEJOURNALOFAPPLIEDCHEMISTRYAug.2011949SynthesisandSpectroscopicPropertiesoftheAlkalinepHFluorescentProbeBasedonaNovelExocyclicRingsFusedDipyrrometheneboronDifluorideFluorophoreXUHaiyun,FENGCuilan,LIUYing(DepartmentofChemistry,ShangqiuNormalCollege,Shang
2、qiu476000)AbstractTwonovelexocyclicringfuseddipyrrometheneborondifluoride(BODIPY)dyessubstitutedwithphydroxyphenylorphenylsubunitatthemesopositionhavebeenprepared.Theirabsorptionandsteadystatefluorescencepropertiesareinvestigatedinpolarandnonpolarsolvents.Thefluorometrictitrationmea
3、surementswerecarriedouttoexaminetheirresponsiveabilitiestopHchangeinthebasicCH3CNH2Osolution.Theresultsindicatethatstrong-fluorescenceofdye1issignificantlyquenchedbyaddingOHtothesolution,andtheadditionoftheCF3COOHintothebasicsolutionrestoresthequenchedfluorescence.InCH3CNH2O(volumerati
4、o1∶1)solution,dye1canbequalifiedasaverysensitivefluorescentprobeforpHsensinginthealkalineregion,withapKavalueas1023whentheexcitationandemissionwavelengthsofdye1are490nmand540nm,respectively.Keywordsboradiazaindacene,fusedexocyclicrings,thealkalinemedium,electrontransfer,pHfluorescentpro
5、beCLCnumber:O623Documentcode:AArticleID:10000518(2011)08094907DOI:10.3724/SP.J.1095.2011.00666ThepHmeasurementtechniqueemployingfluorescencedyesassensoriswellestablishedforbothimagingandsensingapplications.Itoffersmoreadvantagesthanothertechniquesduetothenondestructionand[1]noninvasio
6、ntosample,sensitivity,specificity,andthewideindicationrange.Inrecentyears,the[24][512]synthesisandtheapplicationsasselectiveandsensitivefluorescentsensorsofionicspeciesofdipyrrometheneborondifluoride(BODIPY)dyeshavereceivedconsiderableattentionsbecauseoftheirfavorablephotophysicalprope
7、rtiessuchashighmolarextinctioncoefficients,highfluorescencequantumyields,insensitivitytowardpHandsolventpolarity,superiorphotostabilityandphotoexcitationwithvisible[1314]light.ItiswelldemonstratedthatBODIPYderivativeswithdifferentreceptorgroupssuchas[1516][16][17][18]ph
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