A reversible fluorescence "off-on-off" sensor for sequential detection of aluminum and acetate/fluoride ions

被引：360
作者：
Gupta, Vinod Kumar [1 ,2 ,3 ]
Mergu, Naveen [1 ]
Kumawat, Lokesh Kumar [1 ]
Singh, Ashok Kumar [1 ]
机构：
[1] Indian Inst Technol Roorkee, Dept Chem, Roorkee 247667, Uttar Pradesh, India
[2] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia
[3] Univ Johannesburg, Dept Appl Chem, Johannesburg, South Africa
来源：
TALANTA | 2015年 / 144卷
关键词：
Chemosensor; Fluorescence; Reversibility; Sequential detection; Metal ion; Anion; NAKED-EYE DETECTION; VOLTAMMETRIC DETERMINATION; COLORIMETRIC SENSOR; AQUEOUS-MEDIA; TRACE AMOUNTS; FLUORIDE; CHEMOSENSOR; RECOGNITION; ANIONS; MERCURY;
D O I：
10.1016/j.talanta.2015.05.053
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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 Al3+ 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-Al3+ 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 Al3+ and AcO-/F-. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：80 / 89
页数：10
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