Textile organic electrochemical transistors (txOECTs) are a new class of wearable biosensors used to monitor physiological parameters in bio fluids of clinical interest. Herein the selectivity of a textile biosensor was improved directly functionalizing the textile device with ion selective membranes. The device was prepared by a series of consecutive functionalization of the textile fiber, first by applying the conductive polymer poly (3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) and subsequently the ion selective membrane based on different ionophores with the aim of measuring electrolytes in sweat. The ion selective membranes were previously tested and optimized by potentiometric measurements. The biosensor devices were studied with different concentration of electrolytes. Membrane selectivity was tested comparing transistor response with interfering ions, proving successfully the selective response to sodium, potassium and calcium ions. The ability of the textile biosensors to discriminate among the cations was demonstrated over the 10⁻⁵ - 1 M concentration range, a concentration range found in sweat. The electronic parameters of the txOECTs show differences not only in modulation response but also in time constants of kinetic behavior. The selective determination of potassium and calcium in sweat has a great importance in different applications, for example, in human sweat monitoring, to understand physiological conditions, like dehydration, cardiac bioactivity and hypokalemia.

纺织有机电化学晶体管（txOECT）是一类新型的可穿戴生物传感器，用于监测临床感兴趣的生物流体中的生理参数。本文中，通过离子选择性膜直接使纺织品装置功能化，提高了纺织品生物传感器的选择性。该设备是通过一系列连续的纺织纤维功能化制备的，首先通过应用导电聚合物聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS），然后应用基于不同离子载体的离子选择性膜目的是测量汗液中的电解质。离子选择性膜以前已经过测试，并通过电位测量进行了优化。研究了具有不同浓度电解质的生物传感器设备。测试了膜选择性，将晶体管响应与干扰离子进行了比较，成功证明了对钠，钾和钙离子的选择性响应。在过去的10年中，证明了纺织生物传感器区分阳离子的能力^-5-1 M的浓度范围，汗液中的浓度范围。txOECT的电子参数不仅显示调制响应差异，而且还显示动力学行为的时间常数。选择性测定汗液中的钾和钙在不同的应用中非常重要，例如在人类汗液监测中，以了解生理状况，例如脱水，心脏生物活性和低钾血症。