Fluorescent film sensor for copper ion based on an assembled monolayer of pyrene moieties
作者:Lining Gao、Fengting Lü、Huiyun Xia、Liping Ding、Yu Fang
DOI:10.1016/j.saa.2011.02.054
日期:2011.8
highly selectivity for organic copper salts, which can be attributed to the introduction of sulfonyl groups connecting the pyrene moieties and the spacers. The presence of sulfonyl units made the microenvironments of pyrene relatively hydrophilic and thus showed less screening effect for inorganic ions. The specificity and reversibility of the film sensor toward Cu (II) made it attractive for sensing applications
我们之前曾报道过,通过在玻璃板表面上的环氧封端自组装单层膜上共价偶联多环芳烃,可以构建用于有机铜盐的荧光膜传感器系列。在这里,我们研究了通过长的柔性“ Y”型间隔物在玻璃板上共价偶联pyr的传感特性和机理。X射线光电子能谱(XPS)和荧光光谱测量证明pyr在我们的吸附层中的共价连接。与以前的研究结果相比,这种新型薄膜传感器对有机铜盐的选择性不高,这可以归因于引入了连接the部分和间隔基的磺酰基。磺酰基单元的存在使pyr的微环境具有相对亲水性,因此对无机离子的筛选作用较小。薄膜传感器对Cu(II)的特异性和可逆性使其对传感应用具有吸引力。