Asymmetric membrane-based potentiometric solid-state ion sensors
Asymmetric membrane-based potentiometric solid-state ion sensors
复制标题
非对称膜电位固态离子传感器
DOI：
10.1016/0925-4005(96)80126-2
复制
发表时间：
1996
影响因子：
8.4
通讯作者：
Richard B. Brown
中科院分区：
文献类型：
--
作者：
D. Sakong;M. Cha;J. Shin;G. Cha;M. Ryu;R. Hower;Richard B. Brown
非对称离子选择性膜被证明是有利的固态离子传感器的制造。这些膜在离子选择性层的感测表面的顶部上具有亲水性多孔层。与传统的聚合物膜相比，非对称膜显示出由于动力学和排斥机制而减少的来自大的疏水阴离子的干扰。醋酸纤维素基质不对称膜是通过直接水解均质增塑的三醋酸纤维素离子选择性膜的表面而形成的。基于聚氨酯的不对称膜系统由涂覆在下面的含有适当离子载体的更疏水的增塑聚氨酯膜上的非常薄的亲水性聚氨酯膜组成。不对称膜基碳酸根和氯离子传感器表现出显着降低响应水杨酸盐相比，PVC，未改性的三醋酸纤维素，或聚氨酯膜基离子传感器。基于聚丙烯酰胺的非对称膜系统在固态离子传感器的制备中特别有前途。
Asymmetric ion-selective membranes are shown to be advantageous for the fabrication of solid-state ion sensors. These membranes have a hydrophilic, porous layer on top of the sensing surface of the ion-selective layer. Compared to conventional polymeric membranes, the asymmetric membranes show decreased interference from large, hydrophobic anions because of kinetic and exclusion mechanisms. Cellulose acetate-matrix asymmetric membranes are formed by hydrolyzing directly the surface of homogeneous, plasticized cellulose triacetate ion-selective membranes. The polyurethane-based asymmetric membrane system consists of a very thin hydrophilic polyurethane membrane coated on an underlying more hydrophobic plasticized polyurethane membrane containing the appropriate ion carrier. Asymmetric membrane-based carbonate and chloride ion sensors exhibit a remarkably reduced response to salicylate when compared to the PVC, unmodified cellulose triacetate, or polyurethane membrane-based ion sensors. The polyurethane-based asymmetric membrane system is especially promising for the fabrication of solid-state ion sensors.
影响因子：
7.4
作者：
CHA, GS;LIU, D;BROWN, RB
通讯作者：
BROWN, RB