具有荧光响应功能的分子四边形的组装.pdf

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1、第26卷第12期无机化学学报Vo1．26No．122010年12月CHINESEJOURNAlOFINORGANICCHEMISTRY2l38—2142具有荧光响应功能的分子四边形的组装朱翔黄薇何成段春迎(大连理工大学化工学院，精细化工国家重点实验室，大连1160121摘要：由缩氨基脲和2-喹啉醛合成了席夫碱配体HL，与过渡金属离子Cd组装得到了四边形配合物CQ。用X射线衍射对配合物的晶体结构进行了测定，发现其具有，4。／n空间群通过荧光测试发现该配合物在CHCN溶液中具有较强的荧光，加人间苯二甲酸、对苯二甲酸阴离子后荧光发生淬灭，而加入邻苯二甲酸阴离子荧光无

2、变化．可以将邻苯二甲酸阴离子从其他2种二酸阴离子f{l隧分出来。关键词：镉离子；荧光；席大碱配体：二酸阴离子中图分类号：0614．24+2文献标识码：A文章编号：1001—4861(2010)12—2138—05Self-assemblyofFluorescentMolecularSquaresZHUXiangHUANGWeiHEChengDUANChun—Ying(StateKeyLaboratoryofFineChemicals，DalianUniversityofTechnology,Dalian，Liaoning116012)Abstract：Anov

3、elCd—basedtetranuclearcomplexCQ([Cd4H2L4](NO3)2·14H20，whereH2L=bis[2一Quinolinemethy1]carbohydrazone1hasbeensynthesizedviaself-assembly．Single—crystalX—raydiffractionanalysisshowsthatCQisamolecularsquare，whichcrystallizesinan141／aspacegroup．CQshowsastrongfluorescentemissionbandinCH3C

4、Nsolution．ThefluorescenttitrationexperimentshowstheCQhasafluorescentquenchingeffecttowardP—phthalateandm—phthalatedicarboxylates，whilesilentforthe0一phthalateone，suggestingitcanbeusedasafluorescentchemosensorfordistinguishingo．phthalatefromtwootherisomersofdicarboxylates．CCDC：791184．

5、Keyword：Cdions；luminescence；Schifbaseligand；dicarboxylates0Introductionincludesdetectingandamplifyingguest—bondingeventstoproduceameasurableoutput闱．Thus．apropercomm-Supramolecularassemblyofpredesignedorganicunicationsystemthatisabletotransducetherecogni-andinorganicbuildingblocksisa

6、nexcellenttoolfortioninformationintoaneasy·to--measuresignalmustbeconstructingwell—definednanosizemolecularcavities⋯．includedintheoverallmoleculardesign[4~．Syntheticstrategiesforconstructingfunctionalcoor—Recently，thedevelopmentofsyntheticreceptorsdinationcageswithvariousstructuresa

7、ndnovelinclu—abletobindanionsselectivelyinadetectablefashiontosionpropertieshavebeenwellestablishedtheseyears【2『

8、anobserverviachangesinelectrochemicalresponseorAsthedevelopmentofsupramolecularchemistry，theinfluorescenceintensityconstitutesanimportantyetmajorchallengegoesbeyondachiev

9、ingasize—oradificul