含水介质中苯甲醛缩氨基硫脲对H_2PO_4^-的识别作用研究

The anion recognition for H_2PO_4^- by benzylaldehyde arylthiosemicarbazone in aqueous-organic binary solvents

利用紫外-可见吸收光谱研究了苯甲醛缩氨基硫脲受体分子对H2PO4-和Cl O3-的选择性识别作用。结果表明,该受体分子对H2PO4-有较好的识别作用,而对Cl O3-没有作用。随着溶液中含水量的增加,受体对H2PO4-的识别作用减弱,证明了受体分子与阴离子之间形成了氢键加合物。可用于无机盐磷酸二氢根的检测。

The properties of the receptors with anions such as H 2 PO4 -and ClO3 -in DMSO and in aque-ous organic binary solvent were investigated by UV-Vis spectroscopy .The results indicated that the recep-tor had a good selectivity for H 2 PO4 -, but had no clearly binding with ClO 3 -.Which showed that the binding ability was weakened with increasing of water in solution ,what confirmed the receptor with anion H2 PO4 -by multiple hydrogen bonding interactions .And the anion recognition was successfully applied to inorganic salts of H2 PO4 -.These findings are expected to be of significance for designing and developing novel color-based anion sensors operated in aqueous solution .