_3重原子效應及有機溶劑的影響000000()韶關大學化學系,韶關,51;貴州大學化學系,貴陽,清華大學化學系,北京,核心詞2分類號657.22NOANOAΒΒCD12性質研究尚未RTPRTP32發射性質及若NPRTP干萘系衍生物的2發光體能否在流體溶液中實現發射重要決定NPRTPRT發射的必要條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發射特性的影響.RTPRTP1?1.125015nm?20nm,PELSB延遲時間:011,門控時間:210.msm()級,北京化工廠的飽和水溶液濃度以表達;,..級;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保護性介質存在下,以ΑNOA和作重原子微擾劑時,引入不同有機溶劑及其用量對體系發射性質的影響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,無論以KITlNO41()3國家自然科學基金同意號:29775013資助課題.(發射所需的光誘導時間很長特別對使用RTTlNO3滅體系的丙酮的引入還會使體系磷光.RTP作重原子微擾劑最明顯的特點是對除K長時間的光照誘導即能獲得較穩定的信RTP不同有機溶劑對重原子微擾劑和TlNO3Fig.1TheRTPspectraof.+.+.+2;2;2+aKBrΑNOAbKIΑNOAcKI乙醇的存在會完全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,的強度趨于穩定濃度很高時強度還會上升.2ΑNOARTPK-3-22.4)(用量的濃度分別在410×10,110×10和不小于?Na2SO3Na2SO3molLTlNO33410×10?對含的體系而言,過量molLKIRTPTlNO3+2-3的加入反而使體系的強度明顯減少,這可能與與可形成吸取帶Na2SO3RTPT6260,290nmTl-7-6用作重原子時,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?有關系數分別為molLRTP-801999和01997.空白值很低,按空白值倍原則差計算,檢出限為110×10?用.mo7665410×10,210×102?210×10,312×10TlNO3ΑNOAmolL范疇內亦有良好的線性關系,其有關系數分別為01999和01997.3倍原則?mo8110×10?.差計算,并不影響其molLKITlNO3參考文獻()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