Analytical applications of Conducting Polymer Celloid with externally Controllable functions

制备了由导电聚合物和空间稳定剂组成的可溶性复合粒子，并研究了其作为智能型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体比聚苯胺基复合材料的分散体更稳定，但萃取有机分子的速度和定量较低。然而，epr研究表明，在pH高于6.1时，聚吡咯复合材料具有比聚苯胺复合材料显著更多的阳离子位点。对无机基质的交换选择性按C1 <Br <BF_4 <ClO_4 <SCN的顺序增加。在吸收有机阴离子的情况下，掺杂剂作为尺寸识别的模板，并且吸收强烈地依赖于掺杂剂的尺寸。阴离子分子如醌磺酸盐和变色酸被定量地吸收到胶体中。2）以N-苄氧羰基-L-天冬氨酸为手性选择剂，聚吡咯-聚乙烯醇复合物为手性选择剂，对氨基酸进行了对映体识别。摄取0.1 mM谷氨酸的enancio过量比为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.