کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1231033 | 1495200 | 2016 | 7 صفحه PDF | دانلود رایگان |
• A novel turn-on fluorescent sensor based on quinoline and naphthalimide was designed and synthesized.
• The sensor is highly sensitive and selective to hydrogen sulfate with 8-fold fluorescence enhancement.
• The sensing mechanism has been suggested to proceed via a hydrolysis process.
A new fluorescence turn-on chemosensor 1 based on quinoline and naphthalimide was prepared and its anion sensing toward various anions behavior was explored in this paper. Sensor 1 exhibited a highly selective fluorescent response toward HSO4− with an 8-fold fluorescence intensity enhancement in the presence of 10 equiv. of HSO4− in DMSO-H2O (1/1, v/v) solution. The sensor also displayed high sensitivity to hydrogen sulfate and the detection limit was calculated to be 7.79 × 10− 7 M. The sensing mechanism has been suggested to proceed via a hydrolysis process of the Schiff base group. The hydrolysis product has been isolated and further identified by 1H NMR and MS.
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Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 169, 5 December 2016, Pages 38–44