An approach providing cation‐selective poly‐(3,4‐ethylenedioxythiophene)(PEDOT):polyelectrolyte‐mixed conductors is presented in this communication based on the structural modification of this ambivalent (ionic and electronic conductive) polymer complex. First, an 18‐crown‐6 moiety is integrated into the styrene sulfonate monomer structure as a specific metal cation scavenger particularly targeting K⁺ versus Na⁺ detection. This newly functionalized monomer is characterized by ¹H NMR titration to evaluate the ion selectivity. Aqueous PEDOT dispersion inks containing the polymeric ion‐selective moieties are designed and their electrical and electrochemical properties analyzed. These biocompatible inks are the first proof‐of‐concept step towards ion selectivity in view of their interfacing with biological cells and microorgans of interest in the field of biosensors and physiology.

中文翻译：

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钾选择性混合离子/电子导电聚合物的设计。

本文基于这种矛盾的（离子和电子导电）聚合物配合物的结构修饰，提出了一种提供阳离子选择性聚（3,4-亚乙基二氧噻吩）（PEDOT）：聚电解质混合导体的方法。首先，将18冠6部分作为特殊的金属阳离子清除剂整合到苯乙烯磺酸盐单体结构中，特别针对K ⁺与Na ^+的检测。这种新功能化的单体的特点是¹1 H NMR滴定法评估离子选择性。设计了包含聚合物离子选择性部分的水性PEDOT分散油墨，并对其电和电化学性能进行了分析。考虑到它们与生物传感器和生理学领域中感兴趣的生物细胞和微生物的接口，这些生物相容性墨水是迈向离子选择性的第一步概念验证。