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首页> 外文会议>Symposium on Molecularly Imprinted Materials―Sensors and Other Devices, Apr 2-5, 2002, San Francisco, California >Molecularly Imprinted Ionomers
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Molecularly Imprinted Ionomers

机译：分子印迹离聚物

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摘要

Ionomers have been defined as copolymers that have a certain proportion of ionic groups. The ionic groups have a significant effect on the mechanical properties of the copolymers. This is generally due to aggregation of ions in a low dielectric medium. The primary result is to restrict chain motion and raise the glass transition temperature. These attributes have relevance to molecular imprinting, since restricted chain motion should help preserve the integrity of the binding site. The connection between ionomers and molecular imprinting has come from the production of metal ion imprinted resins. Metal ions are used in the production of molecularly imprinted polymer ion exchange resins and ionically permeable membranes. The polymers have applications as separations media, sequestering media and as ion selective sensors. Metal ions are also being used to form imprinted polymers based on metal mediated imprint binding. We have prepared ion exchange resins, selectively permeable polymer membranes, ion selective electrodes and ion selective optical sensors using a modified version of the molecular imprinting technique. The modification is a reduction in the amount of covalent crosslinking used to form the polymers. This reduction may be justified by the presence of residual metal ion crosslinking in the immediate region of the imprinted binding site. The effects of metal ions on the thermal and mechanical properties of the polymers, as well their impact on binding selectivity are critical variables.
机译：离聚物被定义为具有一定比例的离子基团的共聚物。离子基团对共聚物的机械性能有重要影响。这通常是由于离子在低介电介质中的聚集。主要结果是限制链运动并提高玻璃化温度。这些属性与分子印迹有关，因为受限制的链运动应有助于保持结合位点的完整性。离聚物与分子印迹之间的联系来自金属离子印迹树脂的生产。金属离子用于生产分子印迹聚合物离子交换树脂和离子渗透膜。该聚合物可用作分离介质，螯合介质和离子选择性传感器。基于金属介导的印迹结合，金属离子也被用于形成印迹聚合物。我们使用分子印迹技术的改进版制备了离子交换树脂，选择性渗透的聚合物膜，离子选择性电极和离子选择性光学传感器。改性是减少用于形成聚合物的共价交联的量。这种减少可以通过在印迹结合位点的紧邻区域中残留金属离子交联来证明。金属离子对聚合物的热和机械性能的影响以及它们对键合选择性的影响是关键变量。

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