新型酰腙类荧光探针的合成及其对Al(Ⅲ)的传感性质
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摘要
合成了两个酰腙类荧光探针1和2,在DMSO-H_2O(7∶3,体积比)体系中,两者分别在478 nm和460 nm处对Al~(3+)具有较好的荧光选择识别作用。Job's法、核磁滴定、质谱分析表明,探针1和2与Al~(3+)的配位比均为1∶2,且对Al~(3+)的检出限分别为9.58×10~(-8) mol/L和6.52×10~(-8) mol/L。同时提出了探针1和2对Al~(3+)的荧光传感机理。实际应用研究表明,探针1和2可用于河水和自来水中一定浓度范围内Al~(3+)的检测。
Two acylhydrazone based fluorescent probes 1 and 2 were synthesized.Probes 1 and 2 both showed an excellent selectivity toward Al~(3+) in DMSO-H_2O(7 ∶3,by volome) solution at emission wavelengths of 478 nm and 460 nm,respectively.The stoichiometric ratios of 1 ∶2 for the Al~(3+) complexes were determined by Job's plots,~1H NMR titration experiments and LC-MS analysis.The detection limits of probes 1 and 2 for Al~(3+) were found to be 9.58×10~(-8) mol/L and 6.52×10~(-8) mol/L,respectively.The fluorescent sensing mechanisms for probes 1 and 2 to Al~(3+) were proposed.Furthermore,the applied research revealed that the probes 1 and 2 could be used for the detection of Al~(3+) in river water and tap water samples.
Two acylhydrazone based fluorescent probes 1 and 2 were synthesized.Probes 1 and 2 both showed an excellent selectivity toward Al~(3+) in DMSO-H_2O(7 ∶3,by volome) solution at emission wavelengths of 478 nm and 460 nm,respectively.The stoichiometric ratios of 1 ∶2 for the Al~(3+) complexes were determined by Job's plots,~1H NMR titration experiments and LC-MS analysis.The detection limits of probes 1 and 2 for Al~(3+) were found to be 9.58×10~(-8) mol/L and 6.52×10~(-8) mol/L,respectively.The fluorescent sensing mechanisms for probes 1 and 2 to Al~(3+) were proposed.Furthermore,the applied research revealed that the probes 1 and 2 could be used for the detection of Al~(3+) in river water and tap water samples.
引文
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[19] Han T Y,Feng X,Tong B,Shi J B,Chen L,Zhi J G,Dong Y P.Chem.Commun.,2012,48:416-418.