Analytical applications of Conducting Polymer Celloid with externally Controllable functions

制备了由导电聚合物和立体稳定剂组成的可溶复合颗粒，并研究了其作为智能离子交换剂的稳定性和离子交换性能。聚吡咯基复合材料的分散性比聚苯胺基复合材料的分散性更稳定，但提取有机分子的速度和定量较差。然而，epr研究表明，当pH值高于6.1时，聚吡咯复合材料的阳离子位点数量明显多于聚苯胺复合材料。胶体对无机底物的交换选择性依次为C1 <Br <BF_4 <CIO_4 <SCN。在吸收有机阴离子的情况下，掺杂剂作为尺寸识别的模板，并且摄取强烈依赖于掺杂剂的尺寸。阴离子分子如醌磺酸盐和三色酸被定量地吸收到胶体中。这些注入的分子可以通过化学和电化学还原胶体完全喷射出来。2)采用掺杂n -碳苯氧基- l -天冬氨酸的聚吡咯-聚乙烯醇复合材料作为手性选择剂，对氨基酸进行了对映体识别。对0.1 mM谷氨酸的吸收，其吸收-过剩比为6。

Soluble composite particles consisting of conducting polymer and steric stabilizer were prepared, and their stabilities and ion exchange properties were studied as inteligent ion exchanger. The dispersions of the polypyrrole-based composites were more stable than those for the polyaniline-based ones but extracted organic molecules less rapidly and quantitatively. However, epr investigation indicated that the polypyrrole composites had substantially greater numbers of cationic sites than the polyaniline composites at pH higher than 6.1) Studies on ion exchange characteristics. The exchange selectivity for inorganic substrates increased in the sequence of C1 <Br <BF_4 <CIO_4 <SCN for the colloids. In the case of uptake of organic anions, dopant worked as a template for size recognition and the uptake was strongly dependent on the size of the dopant. Anionic molecules such as quinone sulfonates, and chromotripic acid were taken up into the colloids quantitatively. These injected molecules could be ejected completely on reducing the colloids both chemically and electrochemically.2) Enantiodiscrimination of amino acid was attempted by using a polypyrrole- poly(vinyl alcohol) composite doped with N-carbobenzoxy-L-aspartic acid as a chiral selector. An enancio-excess ratio of 6 was obtained for uptake of 0.1 mM glutamic acid.