一种用于顺序检测铝离子和醋酸根/氟离子的可逆荧光“关-开-关”传感器。
A reversible fluorescence "off-on-off" sensor for sequential detection of aluminum and acetate/fluoride ions.
作者信息
Gupta Vinod Kumar, Mergu Naveen, Kumawat Lokesh Kumar, Singh Ashok Kumar
机构信息
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India; Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa.
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
出版信息
Talanta. 2015 Nov 1;144:80-9. doi: 10.1016/j.talanta.2015.05.053. Epub 2015 May 28.
A new rhodamine functionalized fluorogenic Schiff base CS was synthesized and its colorimetric and fluorescence responses toward various metal ions were explored. The sensor exhibited highly selective and sensitive colorimetric and "off-on" fluorescence response towards Al(3+) in the presence of other competing metal ions. These spectral changes are large enough in the visible region of the spectrum and thus enable naked-eye detection. Studies proved that the formation of CS-Al(3+) complex is fully reversible and can sense to AcO(-)/F(-) via dissociation. The results revealed that the sensor provides fluorescence "off-on-off" strategy for the sequential detection of Al(3+) and AcO(-)/F(-).
合成了一种新型罗丹明功能化的荧光席夫碱CS，并研究了其对各种金属离子的比色和荧光响应。在存在其他竞争性金属离子的情况下，该传感器对Al(3+)表现出高度选择性和灵敏的比色及“关-开”荧光响应。这些光谱变化在光谱的可见光区域足够大，因此能够实现肉眼检测。研究证明，CS-Al(3+)配合物的形成是完全可逆的，并且可以通过解离来检测AcO(-)/F(-)。结果表明，该传感器为顺序检测Al(3+)和AcO(-)/F(-)提供了荧光“关-开-关”策略。
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