Zou Linbo, Yan Boren, Pan Dingwu, Tan Zan, Bao Xiaoping
State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, People's Republic of China.
State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Sep 5;148:78-84. doi: 10.1016/j.saa.2015.03.109. Epub 2015 Apr 3.
A colorimetric and absorption ratiometric anion sensor (L) based on indole and hydrazide binding units was designed and synthesized, and its recognition & sensing properties towards different anions were studied by naked-eye observations, UV-vis and (1)H NMR titration spectra. Sensor L could selectively recognize biologically important F(-), AcO(-) and H2PO4(-) in DMSO over other anions, along with a significant change in its color and absorption spectrum, resulting from the formation of corresponding 1:2 (L/F(-)) and 1:1 (L/AcO(-) and L/H2PO4(-)) complexes. The (1)H NMR titration experiments proved that sensor L experienced deprotonation of NH fragment and produced HF2 species, whereas a stable H-bonding complex was formed in the presence of AcO(-) and H2PO4(-).
设计并合成了一种基于吲哚和酰肼结合单元的比色和吸收比率阴离子传感器（L），通过肉眼观察、紫外可见光谱和（1）H NMR滴定光谱研究了其对不同阴离子的识别和传感特性。传感器L在DMSO中能够选择性地识别生物重要阴离子F(-)、AcO(-)和H2PO4(-)，而不是其他阴离子，同时其颜色和吸收光谱发生显著变化，这是由于形成了相应的1:2（L/F(-)）和1:1（L/AcO(-)和L/H2PO4(-)）配合物。（1）H NMR滴定实验证明，传感器L的NH片段发生去质子化并生成HF2物种，而在AcO(-)和H2PO4(-)存在下形成了稳定的氢键配合物。
