萘氧乙酸無(wú)保護(hù)流體室溫磷光的重原子效應(yīng)及有機(jī)溶劑的影響

_3重原子效應(yīng)及有機(jī)溶劑的影響000000()韶關(guān)大學(xué)化學(xué)系,韶關(guān),51;貴州大學(xué)化學(xué)系,貴陽(yáng),清華大學(xué)化學(xué)系,北京,核心詞2分類號(hào)657.22NOANOAΒΒCD12性質(zhì)研究尚未RTPRTP32發(fā)射性質(zhì)及若NPRTP干萘系衍生物的2發(fā)光體能否在流體溶液中實(shí)現(xiàn)發(fā)射重要決定NPRTPRT發(fā)射的必要條RTP4,5件.但在這些研究中,所使用的外重原子微擾劑毒性較大.TlNO32ΑNOAKITlNO3發(fā)射特性的影響.RTPRTP1?1.125015nm?20nm,PELSB延遲時(shí)間:011,門控時(shí)間:210.msm()級(jí),北京化工廠的飽和水溶液濃度以表達(dá);,..級(jí);2萘氧乙酸2,ΑΑNOACPcsK22,TlNO3CPNa2SO3ARKBrARΒΒCD石英亞沸蒸餾器重蒸水...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,?測(cè)其磷光光譜.molLNa2SOKITlNO3Na2SO32成果與討論2.112萘氧乙酸2ΑΑNOARTPTlNO3110.?RTPKIRTPTlNO3KBr2.RTPΒCDRTP22磷光光譜及重原子選擇的影響考察了無(wú)保護(hù)性介質(zhì)存在下,以ΑNOA和作重原子微擾劑時(shí),引入不同有機(jī)溶劑及其用量對(duì)體系發(fā)射性質(zhì)的影響KITlNO3RTP()還是以作重原子微擾劑,最適宜的溶劑是乙腈,表12.成果表明,無(wú)論以KITlNO41()3國(guó)家自然科學(xué)基金同意號(hào):29775013資助課題.(發(fā)射所需的光誘導(dǎo)時(shí)間很長(zhǎng)特別對(duì)使用RTTlNO3滅體系的丙酮的引入還會(huì)使體系磷光.RTP作重原子微擾劑最明顯的特點(diǎn)是對(duì)除K長(zhǎng)時(shí)間的光照誘導(dǎo)即能獲得較穩(wěn)定的信RTP不同有機(jī)溶劑對(duì)重原子微擾劑和TlNO3Fig.1TheRTPspectraof.+.+.+2;2;2+aKBrΑNOAbKIΑNOAcKI乙醇的存在會(huì)完全1%的選擇有較大影響.KI+.+2;2+2.3ΑNOAeTlN3ΒCDΑNOATlNOΑ2NOA;TlNO30120?;cKBrcKImolLcΑ2NOA=1?5×c;s301050?10×10?;2=4;KIcTlNO3molLcΒCDmolL2cNaSO110×10mol?L.23影響.TlNO3體系磷光強(qiáng)度都2ΑNOA1TableEffectsoforganicsolventsonRTPpropertiesΑNOAwhenKIasheavyatomperRTPPropertiesIrradiatetimefor()%OrganicsolventAmount?ΚexΚemINTstableRTPsignal?s’Nosolvent?496,52457.6?55.6,57.4287Needn288?493,52552.1?49.8,53.5’Acetonitrile1.0Needn296498,52425.424.1,26.0??2001.0Acetone’Needn287493,52056.650.7,53.7??1.0Methanol’Neednt287495,57.652.1,58.01.0??Alcohol’Neednt288?494,52356.2?53.57.31.2’Neednt286?494,52156.4?51.6,57.71.62.052346.742.3,47.8’??Needn-2TableEffectsoforganicsolventsonRTPpropertiesΑNOAwhenTlNO3asheavyatomperPropertiesIrradiatetimeforRTP()OrganicsolventAmount%?ΚexΚemINTstableRTPsignals?90Nosolvent297?494,522?612.5,610.2615.297494,522612.4611.8,614.6??90Acetonitrile1.22240ceto3630311495,522314.0314.4,309.3??4502.302495,521620.6619.4,625.80.2??270Methano300495,522564.0566.7,569.00.6??1302572.31.0?495,522?572.4,562.91302?498,521568.0?565.3,564.90.21180Alcoho298?494,523466.2?470.8,460.30.632001.0NoRTPsl22.30115410×10??KImolLTlNO3molL()時(shí),的強(qiáng)度趨于穩(wěn)定濃度很高時(shí)強(qiáng)度還會(huì)上升.2ΑNOARTPK-3-22.4)(用量的濃度分別在410×10,110×10和不小于?Na2SO3Na2SO3molLTlNO33410×10?對(duì)含的體系而言,過(guò)量molLKIRTPTlNO3+2-3的加入反而使體系的強(qiáng)度明顯減少,這可能與與可形成吸取帶Na2SO3RTPT6260,290nmTl-7-6用作重原子時(shí),2濃度在810×10,410×10?2.工作曲線和檢出限KIΑNOAmo-6-5和410×10,410×10?有關(guān)系數(shù)分別為molLRTP-801999和01997.空白值很低,按空白值倍原則差計(jì)算,檢出限為110×10?用.mo7665410×10,210×102?210×10,312×10TlNO3ΑNOAmolL范疇內(nèi)亦有良好的線性關(guān)系,其有關(guān)系數(shù)分別為01999和01997.3倍原則?mo8110×10?.差計(jì)算,并不影響其molLKITlNO3參考文獻(xiàn)()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=297494,521????sitywavelengthsareΚexΚemnmorΚexΚemnmwhenKIor).TlNO3asheavyatomperturberThoughtheRTPsignalislowerwithKIasheavyatom,perturberthanthatwithTlNO3buttheanalyticalcharacteristicsoftheformerisbetter.thanthatofthelatterThekindandamountoforganicsolventaddedtothesystemhavea,strongeffectontheRTPintensityirradiatingtimerequired