Lead Ion Selective Signal Amplification by a Supramolecular Podand Fluoroionophore/Surfactant Complex Sensor in Water
Lead Ion Selective Signal Amplification by a Supramolecular Podand Fluoroionophore/Surfactant Complex Sensor in Water
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DOI：
10.1080/10610270412331328899
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发表时间：
2005-01
影响因子：
3.3
通讯作者：
T. Hayashita;Dai Qing;R. Bartsch;S. Elshani;R. Hanes;N. Teramae
中科院分区：
文献类型：
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作者：
T. Hayashita;Dai Qing;R. Bartsch;S. Elshani;R. Hanes;N. Teramae
在低于 Triton X-100 的临界胶束浓度 (cmc) 时，发现 PD-18C6/Triton X-100 复合物对水中的 Pb2+ 表现出放大的荧光响应。 cmc 上方未发现此类信号放大。动态光散射和暗视野显微镜分析表明，PD-18C6/Triton X-100 复合物通过选择性 Pb2+ 结合触发形成微米级聚集体 (1.24±0.39 μm)，导致荧光强度增强，在 pH 5.70 时荧光发射出现明显的蓝移。这是 PD-18C6/Triton X-100 复合传感器的一种新颖的超分子功能，用于选择性识别水中的 Pb2+。
Below the critical micelle concentration (cmc) of Triton X-100, a PD-18C6/Triton X-100 complex was found to exhibit an amplified fluorescence response for Pb2 + in water. No such signal amplification was noted above the cmc. Dynamic light scattering and dark-field microscope analyses revealed that the PD-18C6/Triton X-100 complex formed micron-size aggregates (1.24±0.39 μm) triggered by selective Pb2 + binding, resulting in the enhancement of fluorescence intensity with a distinct blue shift of the fluorescence emission at pH 5.70. This is a novel supramolecular function of a PD-18C6/Triton X-100 complex sensor for selective Pb2 + recognition in water.