A Highly Selective Fluorescent Sensor for Distinguishing Cadmium from Zinc Ions Based on a Quinoline Platform

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• 作者：Xiaoyan Zhou ; Pengxuan Li ; Zhaohua Shi ; Xiaoliang Tang ; Chunyang Chen ; Weisheng Liu
• 刊名：Inorganic Chemistry
• 出版年：2012
• 出版时间：September 3, 2012
• 年：2012
• 卷：51
• 期：17
• 页码：9226-9231
• 全文大小：361K
• 年卷期：v.51,no.17(September 3, 2012)
• ISSN：1520-510X

文摘

A fluorescent sensor, N-(quinolin-8-yl)-2-(quinolin-8-yloxy)acetamide (HL), based on 8-aminoquinoline and 8-hydroxyquinoline platforms has been synthesized. This sensor displays high selectivity and sensitive fluorescence enhancement to Cd²⁺ in ethanol. Moreover, sensor HL can distinguish Cd²⁺ from Zn²⁺ via two different sensing mechanisms (photoinduced electron transfer for Cd²⁺; internal charge transfer for Zn²⁺). The composition of the complex Cd²⁺/HL or Zn²⁺/L^{鈥?/sup> has been found to be 1:1, based on the fluorescence/absorption titration and further confirmed by X-ray crystallography.}