A novel colorimetric chemosensor based on quinoline for the sequential detection of Fe3+ and PPi in aqueous solution

作者：Wang, Wei; Wei, Jiwen; Liu, Huimin; Liu, Qinglei; Gao, Yan^*

来源：Tetrahedron Letters, 2017, 58(11): 1025-1029.

DOI：10.1016/j.tetlet.2017.01.010

• Chemosensor
• Calorimetric
• Quinoline
• Fe3+
• PPi
• Aqueous solution

A novel quinoline-functionalized Schiff-base derivative PY was designed and synthesized. Sensor PY displayed highly selective and sensitive fluorescence enhancement and naked-eye color change to Fe3+ in the presence of other competing cations. The mechanisms have been supported by Job's plot evaluation, FT-MS and theoretical calculations. The in situ generated PY-Fe3+ complex solution exhibited a high selectivity toward PPi via Fe3+ displacement approach. The detection limits of sensor PY to Fe3+ and PY-Fe3+ complex to PPi were estimated to be 4.24 x 10(-8) M and 8.18 x 10(-8) M, respectively. This successive recognition feature of sensor PY makes it has a potential utility for Fe3+ and PPi detection in aqueous solution. A B3LYP/6-31G(d,p) basis set was employed for optimization of PY and PY-Fe3+ complex.

• 出版日期2017-3-15
• 单位辽宁科技大学; 上海应用技术大学