新型罗丹明基fe3 cu2化学传感器的合成 结构表征及识别性能研究-synthesis, structural characterization and identification of a novel rhodamine fe3 cu2 chemical sensor.docx

新型罗丹明基Fe3+、Cu2+化学传感器的合成、结构表征与识别性能研究摘要目的：合成系列新型罗丹明基的Fe3+和Cu2+化学传感器。方法：以罗丹明结构为母核，通过与水合肼、乙二胺缩合反应后，再与系列芳香醛缩合制备系列新型罗丹明基化学传感器(NDR)和新型罗丹明基化学传感器(BR、NBR、NR、AR)。其结构通过IR、1HNMR、13CNMR、单晶衍射等现代分析手段对其进行了表征。采用紫外-可见吸收光谱研究其对常见阴阳离子的选择性识别性能。结果：成功制备并表征了5个新型罗丹明基化学传感器。识别性能研究表明：NDR能专属性地识别Fe3+和具备裸眼识别能力（无色变为橙红色）；而BR、DBR、NR及AR能专属性地识别Cu2+和具备裸眼识别能力（无色变为紫红色），并能连续探测S2-。结论：化学传感器NDR对Fe3+的识别具有较好的专属性，能定性检测水样中的Fe3+；化学传感器BR、DBR、NR及AR对Cu2+的识别具有较好的灵敏度和专属性，能定性定量检测水样中的Cu2+和S2-。其裸眼比率检测性能适宜用于环境现场快速检测。关键词：罗丹明；化学传感器；合成；结构表征；识别Synthesis,CharacterizationandRecognitionPerformanceofNovelRhodamine-basedIron(Ⅲ)andCopper(Ⅱ)chemosensorsAbstractObjective:Synthesizedaseriesofnovelrhodamine-basedchemosensorstodetectiron(Ⅲ)andcopper(Ⅱ)inenvironmentalwatersample.Methods:Usingrhodamineasparentmoleculetoreactwithhydrazinehydrateandethylenediamine,whichthenreactedwitharomaticaldehyderespectivelytoobtainaseriesofchemosensorNDRandchemosensorsBR,DBR,NR,AR.Furthermore,IR,1HNMR,13CNMRandsingle-crystalX-raydiffractionwereusedtocharacterizetheirstructuresandcompositions.Atthesametime,theirrecognitionperformancewith18metalionsand8anionswereinvestigatedinEtOH/H2O(1:1,V:V)solutionbymonitoringtheabsorptionspectralbehavior.Results:5chemosensorswereproducedsuccessfully,theirrecognitionperformancestudyshowedthatNDRcouldrecognizedtowardiron(Ⅲ)specificallyandthecolorchangefromcolorlesstoorangered.Meanwhile,BR,DBR,NRandARcouldrecognizedtowardcopper(Ⅱ)andthecolorchangefromcolorlesstopurplered.Andmoreimportantly,theresultantcomplex(BR-Cu2+,DBR-Cu2+,NR-Cu2+andAR-Cu2+)canasasequentialchemosensortowardS2-among8anionsinneutralaqueousmedia.Conclusion:ChemosenorsNDRshowgoodspecificitytoiron(Ⅲ),whichcandetermineiron(Ⅲ)inwatersamplequalitatively.WhilechemosensorsBR,DBR,NRandARshowgoodsensitivityandspecificitytocopper(Ⅱ),whichcandeterminecopper(Ⅱ)inwatersamplequalitativelyandquantitatively.ItcouldbeconvenientlyusedascolorimetricreagentfordeterminationofCu2+orFe3+inactualenvironmentwith“nakedeye”,respectively.KeyWords:rhodamine;chemosensors;synthesize;ch