Calixarenes are exciting class of organic macromolecules and proved to be an excellent sensing material for optical and mass transaction based sensors. The limited conductivity of calixarenes is a major impediment for the development of calixarene‐only chemiresistive sensors. The authors report on a calixarene‐based chemiresistor that is based on a hybrid material obtained by non‐covalent functionalization of SWCNTs with calixarene. This has two beneficial effects: (a) The use of SWCNT eliminates the conductivity issue, and this enables low‐power chemiresistive sensing; (b) the excellent affinity of calixarenes for certain analytes improves sensitivity. The hybrid material was fabricated by solvent casting, and its formation was confirmed by structural (SEM and TEM), electrical (I_D−V_D and I_D−V_G), and spectroscopic (Raman and ATR‐IR) characterizations. The resulting sensing device, operated typically at +1 V, undergoes an increase in resistance upon exposure to successive increments in concentration from 50 to 250 ppm for benzene, toluene, ethylbenzene and xylenes, commonly known as BTEX. Respective limits of detection are 25, 7.5, 6.5, and 4 ppm. This is well below their Occupational Safety and Health Administration (OSHA) permissible exposure limit (PEL) except for benzene. A mechanistic study for BTEX was performed via field‐effect transistor measurements, and this suggested that the sensing mechanism is dominated by an electrostatic gating effect. In our perception, the availability of a wide variety of calixarenes generates wide perspectives for calixarene‐only based SWCNT‐calixarene hybrid sensor arrays for the realization of electronic nose application.

中文翻译：

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用于挥发性有机化合物的单壁碳纳米管-Compound芳烃基化学还原剂

杯芳烃是令人兴奋的一类有机大分子，并被证明是用于基于光学和质量交易的传感器的出色传感材料。杯芳烃的电导率有限，这是只开发杯芳烃化学传感器的主要障碍。作者报告了一种基于杯芳烃的化学电阻器，该电阻器基于通过用杯芳烃的SWCNT的非共价官能化获得的杂化材料。这具有两个有益的效果：（a）使用SWCNT消除了电导率问题，从而实现了低功率化学阻滞感测；（b）杯芳烃对某些分析物的极好的亲和力提高了灵敏度。杂化材料通过溶剂浇铸法制造，并通过结构（SEM和TEM），电学（I _D - V_D和I _D - V _G）和光谱（拉曼光谱和ATR-IR）表征。对于通常被称为BTEX的苯，甲苯，乙苯和二甲苯，当其浓度从50 ppm到250 ppm连续递增时，所得的传感设备通常在+1 V电压下工作，电阻会增加。分别的检出限为25、7.5、6.5和4 ppm。这远远低于其职业安全与健康管理局（OSHA）允许的暴露极限（PEL）（苯除外）。通过场效应晶体管测量对BTEX进行了机理研究，这表明传感机制主要受静电门控效应的影响。在我们看来，