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A Readily Accessible Difunctional Probe: Simultaneous Recognition of Cation Zn2+ and Anion F- via Distinguishable Wavelengths
作者单位E-mail
曾莉 贵州大学贵州省大环与超分子化学重点实验室, 贵阳 550025  
赵江林 中国科学院深圳先进技术研究院, 生物医学与健康工程研究所, 微纳系统与仿生医学研究中心, 深圳 518055  
牟兰 贵州大学贵州省大环与超分子化学重点实验室, 贵阳 550025  
曾晞 贵州大学贵州省大环与超分子化学重点实验室, 贵阳 550025 zengxi1962@163.com 
卫钢 澳大利亚联邦科学与工业研究组织, 制造业, 新南威尔士州, 悉尼 2070 gang.wei@csiro.au 
Redshaw Carl 英国赫尔大学化学系, 赫尔 HU6 7RX  
金宗文 中国科学院深圳先进技术研究院, 生物医学与健康工程研究所, 微纳系统与仿生医学研究中心, 深圳 518055  
Abstract: The probe 1 was readily prepared via condensation of 8-formyl-7-hydroxy-coumarin and carbonic dihydrazide in a one-step procedure. Probe 1 exhibited high sensitivity and selectivity towards Zn2+ and F- through a "turn-on" fluorescence response and/or ratiometric colorimetric response with low detection limits of the order of 10-8 mol·L-1. The complex behaviour was fully investigated by spectral titration, isothermal titration calorimetry, 1H NMR spectroscopic titration and mass spectrometry. Interestingly, probe 1 not only recognizes the cation Zn2+ and the anion F-, but can also distinguish between these two ions via the max wavelength in their UV-Vis spectra (360 nm for 1-Zn2+ vs 400 nm for 1-F- complex) or their fluorescent spectra (λex, λem=360, 454 nm for 1-Zn2+ vs λex, λem=400, 475 nm for 1-F- complex) due to their differing red-shifts. Additionally, probe 1 has been further explored in the detection of Zn2+ in living cells.
Keywords: 8-formyl-7-hydroxy-coumarin  Zn2+ and F-  distinguishable wavelengths  living cells
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Chinese Journal of Inorganic Chemistry