Modified hydrazone derivatives for ratiometric and colorimetric F− recognition: Relationship between architectures and performances
作者： Yuemin Liu , Zhengquan Yan , Li Nie , Qiang Zhang , Lei Hu
DOI: 10.1016/J.SNB.2017.01.152
关键词: Hydrazone 、 Linear range 、 Titration 、 Proton NMR 、 Job plot 、 Ion 、 Inorganic chemistry 、 Stoichiometry 、 Chemistry 、 Binding constant 、 Analytical chemistry
摘要: Abstract To investigate the influence of molecular structures on sensing performances, three hydrazone derivatives bearing different electron-withdrawing groups (3a, 3b and 3c) were designed synthesized. Their spectra responses to common anions such as F−, Cl−, Br−, I−, CH3COO−, H2PO4−, HSO4−, NO3− ClO4− investigated in detail. The results showed that response for was significantly affected by structures. In CH3CN, 3a did not react with any anion, an −NO2 exhibited a highly selective colorimetric toward while 3c which bears two could CH3COO−. presence 1.5% H2O, however, selectively recognize F− improved sensitivity wide dynamic linear range. mechanism following 1:1 binding stoichiometry detail means UV–vis 1H NMR titrations, Job plot, constant theoretical calculation.
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