Ratiometric and Highly Selective Fluorescent Sensor for Cadmium under Physiological pH Range: A New Strategy to Discriminate Cadmium from Zinc

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• 作者：Chunliang Lu ; Zhaochao Xu ; Jingnan Cui ; Rong Zhang ; Xuhong Qian
• 刊名：Journal of Organic Chemistry
• 出版年：2007
• 出版时间：April 27, 2007
• 年：2007
• 卷：72
• 期：9
• 页码：3554 - 3557
• 全文大小：172K
• 年卷期：v.72,no.9(April 27, 2007)
• ISSN：1520-6904

文摘

In a neutral aqueous environment, a new ratiometric Cd²⁺fluorescent sensor 1a can successfully discriminate Cd²⁺from Zn²⁺ by undergoing two different internal chargetransfer (ICT) processes, and the high selectivity of sensor1a to Cd²⁺ over some other metals was also observed.Moreover, through structure derivation and a series of NMRstudies, the unique role of the 2-picolyl group (the part inred in the abstract graphic) in the sensor 1a-Cd²⁺ complexation was disclosed.