聚丙烯胺衍生物自组装多层膜的制备及其阴离子传感应用研究

摘要

PAH-S was synthesized by covalently attaching 2- ({ (E) -Hydrazino [2- (2-pyridyl) hydrazino]methyl}amino) acetic acid (compound 2) to poly (allylamine hydrochloride) (PAH) via carbodiimide-assisted coupling reaction in water at room temperature.The resulting PAH-S was used to prepare polyelectrolyte multilayers (PEMs) in combination with polyethylene imine (PEI) and poly (sodium 4-styrene sulfonate) (PSS) via layer-by-layer deposition.The polyelectrolyte (PE) adsorption processes were monitored in real time by quartz crystal microbalance (QCM).When the molar ratio of PAH to compound 2 wes 10:2 and the concentration of PO34-ion reached 10-2 mol, the frequency decreased (150 Hz), indicating that the prepared PEMs was adsorption responsive to PO34-.%聚丙烯胺盐酸盐 (PAH) 与2-[{[2- (2-吡啶基) 肼基]硫代羰基}氨基]乙酸 (化合物2) 经酰胺反应制得聚丙烯胺衍生物 (PAH-S) .由聚乙烯亚胺 (PEI) 、PAH-S与聚苯乙烯苯磺酸钠 (PSS) 通过层层自组装制备聚电解质多层膜 (PEMs) .采用质量敏感的石英晶体微天平技术实时监控聚电解质 (PE) 的静电层层自组装吸附过程.在PAH与化合物2摩尔配合比为10:2, PO34-离子浓度达到10-2 mol条件下, 频率降至150Hz, 表明制得的PEMs对PO34-具有吸附响应性.