萘氧乙酸无保护流体室温磷光的重原子效应及有机溶剂的影响

_3重原子效应及有机溶剂的影响000000()韶关大学化学系,韶关,51;贵州大学化学系,贵阳,清华大学化学系,北京,核心词2分类号657.22NOANOAΒΒCD12性质研究尚未RTPRTP32发射性质及若NPRTP干萘系衍生物的2发光体能否在流体溶液中实现发射重要决定NPRTPRT发射的必要条RTP4,5件.但在这些研究中,所使用的外重原子微扰剂毒性较大.TlNO32ΑNOAKITlNO3发射特性的影响.RTPRTP1ƒ1.125015nmƒ20nm,PELSB延迟时间:011,门控时间:210.msm()级,北京化工厂的饱和水溶液浓度以表达;,..级;2萘氧乙酸2,ΑΑNOACPcsK22,TlNO3CPNa2SO3ARKBrARΒΒCD石英亚沸蒸馏器重蒸水...AR2以取一定量的2ΑNOA-3()取一定量的210×10含40%乙醇或40%乙腈溶液,ƒ测其磷光光谱.molLNa2SOKITlNO3Na2SO32成果与讨论2.112萘氧乙酸2ΑΑNOARTPTlNO3110.ƒRTPKIRTPTlNO3KBr2.RTPΒCDRTP22磷光光谱及重原子选择的影响考察了无保护性介质存在下,以ΑNOA和作重原子微扰剂时,引入不同有机溶剂及其用量对体系发射性质的影响KITlNO3RTP()还是以作重原子微扰剂,最适宜的溶剂是乙腈,表12.成果表明,无论以KITlNO41()3国家自然科学基金同意号:29775013资助课题.(发射所需的光诱导时间很长特别对使用RTTlNO3灭体系的丙酮的引入还会使体系磷光.RTP作重原子微扰剂最明显的特点是对除K长时间的光照诱导即能获得较稳定的信RTP不同有机溶剂对重原子微扰剂和TlNO3Fig.1TheRTPspectraof.+.+.+2;2;2+aKBrΑNOAbKIΑNOAcKI乙醇的存在会完全1%的选择有较大影响.KI+.+2;2+2.3ΑNOAeTlN3ΒCDΑNOATlNOΑ2NOA;TlNO30120ƒ;cKBrcKImolLcΑ2NOA=1ƒ5×c;s301050ƒ10×10ƒ;2=4;KIcTlNO3molLcΒCDmolL2cNaSO110×10molƒL.23影响.TlNO3体系磷光强度都2ΑNOA1TableEffectsoforganicsolventsonRTPpropertiesΑNOAwhenKIasheavyatomperRTPPropertiesIrradiatetimefor()%OrganicsolventAmountƒΚexΚemINTstableRTPsignalƒs’Nosolventƒ496,52457.6ƒ55.6,57.4287Needn288ƒ493,52552.1ƒ49.8,53.5’Acetonitrile1.0Needn296498,52425.424.1,26.0ƒƒ2001.0Acetone’Needn287493,52056.650.7,53.7ƒƒ1.0Methanol’Neednt287495,57.652.1,58.01.0ƒƒAlcohol’Neednt288ƒ494,52356.2ƒ53.57.31.2’Neednt286ƒ494,52156.4ƒ51.6,57.71.62.052346.742.3,47.8’ƒƒNeedn-2TableEffectsoforganicsolventsonRTPpropertiesΑNOAwhenTlNO3asheavyatomperPropertiesIrradiatetimeforRTP()OrganicsolventAmount%ƒΚexΚemINTstableRTPsignalsƒ90Nosolvent297ƒ494,522ƒ612.5,610.2615.297494,522612.4611.8,614.6ƒƒ90Acetonitrile1.22240ceto3630311495,522314.0314.4,309.3ƒƒ4502.302495,521620.6619.4,625.80.2ƒƒ270Methano300495,522564.0566.7,569.00.6ƒƒ1302572.31.0ƒ495,522ƒ572.4,562.91302ƒ498,521568.0ƒ565.3,564.90.21180Alcoho298ƒ494,523466.2ƒ470.8,460.30.632001.0NoRTPsl22.30115410×10ƒƒKImolLTlNO3molL()时,的强度趋于稳定浓度很高时强度还会上升.2ΑNOARTPK-3-22.4)(用量的浓度分别在410×10,110×10和不小于ƒNa2SO3Na2SO3molLTlNO33410×10ƒ对含的体系而言,过量molLKIRTPTlNO3+2-3的加入反而使体系的强度明显减少,这可能与与可形成吸取带Na2SO3RTPT6260,290nmTl-7-6用作重原子时,2浓度在810×10,410×10ƒ2.工作曲线和检出限KIΑNOAmo-6-5和410×10,410×10ƒ有关系数分别为molLRTP-801999和01997.空白值很低,按空白值倍原则差计算,检出限为110×10ƒ用.mo7665410×10,210×102ƒ210×10,312×10TlNO3ΑNOAmolL范畴内亦有良好的线性关系,其有关系数分别为01999和01997.3倍原则ƒmo8110×10ƒ.差计算,并不影响其molLKITlNO3参考文献()1.,.,....,1993,4011:1657MunozdelaPenalinasFGomezMJetalTalan2.,.,.........,1993,15MunozdelaPenaASalinasFGomezMJetalJInclusionPhenomMolRecognitChem()2:,,....,1997,341:2413LILongdiCHENYongliZHAOYualAnalChimAc1998,46:11474LILongdiZHAOYuWUYingguangetalTalanta221998,6:27LILongDiZHAOYuTONGAiJunChemistry5()..,......,1989,6113:1431NugaraNEKingADJrAlChemEffectsofHeavyAtomPerturberandOrganicSolventNonprotectedRoomTemperaturePhosphorescenofΑNaphthalenyloxyaceticAc000,32,2,CHENXiaoKangMOULanLILongDi0(,,,51;,DepartmentofChemistryShaoguanUniversityShaoguanDepartmentofChemistry00),,550025;,,,100084GuizhouUniversityGuiyangDepartmentofChemistryTsinghuaUniversityBeijing()AbstractAstrongandstableroomtemperaturephosphorescenceRTPsignalofΑ2naph2()2thalenyloxyaceticacidΑNOAaqueoussolutioncanbeinducedonlybyusingNa2SO3asde2)(.oxidizerandKIorTlNO3asheavyatomperturberThemaximumphosphorescenceinten2()(=287495,521=297494,521ƒƒƒƒsitywavelengthsareΚexΚemnmorΚexΚemnmwhenKIor).TlNO3asheavyatomperturberThoughtheRTPsignalislowerwithKIasheavyatom,perturberthanthatwithTlNO3buttheanalyticalcharacteristicsoftheformerisbetter.thanthatofthelatterThekindandamountoforganicsolventaddedtothesystemhavea,strongeffectontheRTPintensityirradiatingtimerequired