申请人:Auburn University
公开号:US20030213691A1
公开(公告)日:2003-11-20
Ion-detecting sensors for detecting a target ion in a sample are provided. The sensor comprises a plasticizer-free copolymer comprised of polymerized units of methacrylate monomers having pendent alkyl groups of different length and a functionalized ionophore of said ion, wherein at least a portion of the functionalized ionophore is grafted into the copolymer through covalent linkages. Sensors may comprise ionophores such as hydrophilic crown ethers or functionalized derivative of 3-oxapentandiaminde-type ionophores. This invention further provides sensors for detecting target ions in a sample, comprising plasticizer-free molecularly imprinted polymers, wherein the polymers comprise polymerized units of methacrylate monomers having pendent alkyl groups of different length and a functionalized ionophore of said ion. In particular, a magnesium ion sensor comprising a functionalized derivative of a 3-oxapentandiaminde-type calcium ion-selective ionophore is provided. Sensors of this invention include carrier-based ion-selective electrodes or optodes such as thin film ion-specific optodes, particle-based optodes, or bulk optodes.
提供了用于检测样品中目标离子的离子检测传感器。传感器包括无增塑剂共聚物,该共聚物由具有不同长度的下垂烷基的甲基丙烯酸酯单体的聚合单元和所述离子的官能化离子团组成,其中至少一部分官能化离子团通过共价键接枝到共聚物中。传感器可包括亲水性冠醚或 3-氧代戊二茚型离子团的官能化衍生物等离子团。本发明进一步提供了用于检测样品中目标离子的传感器,该传感器由不含增塑剂的分子印迹聚合物组成,其中聚合物由具有不同长度的下垂烷基的甲基丙烯酸酯单体的聚合单元和所述离子的官能化离子团组成。本发明特别提供了一种镁离子传感器,该传感器由 3-氧杂戊二胺型钙离子选择性离子团的官能化衍生物组成。本发明的传感器包括基于载体的离子选择电极或光电极,如薄膜离子特异性光电极、基于颗粒的光电极或块状光电极。