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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 | |
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| 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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