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以4-(二乙氨基)水杨醛为原料,经7-二氨基-3-羧酸香豆素合成了一种新型酰胺类Cu2+荧光探针1。本实验具有合成原料经济易得,合成方法简单易行的特点。并且该探针对Cu2+的检测具有良好的离子选择性,抗干扰性能和较高的检测灵敏度,探针1的浓度为10-5 mol/L时检测限达到2.4×10-7mol/L。同时该探针可以与Cu2+离子1:2的摩尔比络合。 相似文献
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Two novel rhodamine-based fluorescence enhanced molecular probes (RA1 and RA2) were synthesized, which were both designed as comparative fluoroionophore and chromophore for the optical detection of Hg2+. The recognizing behaviors were investigated both experimentally and computationally. They exhibited high selectivity and sensitivity for Hg2+ over other commonly coexistent metal ions in CH3CN/H2O (1:1, V/V) solution. Test shows that hydroxy benzene of rich electron was beneficial to the chelate of Hg2+ with sensors. The detection limit was measured to be at least 0.14 μmol/L. After addition of Hg2+, the color changed from colourless to pink, which was easily detected by the naked eye in both solution and hydrogel sensor. 相似文献
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以4-N,N-二乙氨基水杨醛为原料,经7-N,N-二乙氨基香豆素-3-甲酸合成了一种新型酰胺类Cu2+荧光探针1。该法具有原料经济易得、合成简单易行的特点。该探针对Cu2+的检测具有良好的离子选择性、抗干扰性能和较高的检测灵敏度,当探针1的浓度为10-5mol/L时,Cu2+的检测限达到2.4×10-7mol/L。该探针与Cu2+以1∶2的摩尔比络合。 相似文献
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