Sensitive Detection of Alcohol Isomers by Ionically Conductive Metal-Organic Frameworks,Advanced Electronic Materials

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Sensitive Detection of Alcohol Isomers by Ionically Conductive Metal-Organic Frameworks
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2022-08-04 , DOI: 10.1002/aelm.202200542
Li Li ₁ , Shiqi Zhang ₁ , Yang Lu ₁ , Junyao Zhang ₁ , Xuan Zhang ₁ , Jia Huang _{1,

2}

Affiliation

Alcohols are an important class of organic compounds with many isomers, which play a crucial role in different applications. It is meaningful to develop a convenient method to identify the specific alcohol. However, compact sensors capable of distinguishing different alcohols are still challenging. In this work, utilizing metal ions as charge carriers, capacitive alcohol sensors on the basis of Co-5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin ionically conductive metal-organic frameworks (IC-MOFs) are applied to sense various alcohols and obtain diverse responses for the first time, which can distinguish methanol, ethanol, propanol, and butanol. Besides, the devices show fast sensing speed with a t₉₀ response time around 3 s. After 60 days of storage test under ambient atmosphere, the devices exhibit remarkable stability with negligible change in the sensing response. Furthermore, the sensors show interesting potential through a demonstration, in which the devices can detect 1% methanol doped in vodka. The results provide a new approach to detect different alcohols and corresponding isomers quickly and make IC-MOF sensors competitive candidates in chemical sensing.

中文翻译：

离子导电金属有机框架对醇异构体的灵敏检测

醇是一类重要的有机化合物，具有许多异构体，在不同的应用中起着至关重要的作用。开发一种方便的方法来识别特定的酒精是有意义的。然而，能够区分不同酒精的紧凑型传感器仍然具有挑战性。在这项工作中，利用金属离子作为电荷载体，基于 Co-5,10,15,20-四（4-羧基苯基）卟啉离子导电金属有机框架（IC-MOFs）的电容式酒精传感器被应用于传感首次获得多种醇类，并首次获得多样化的响应，可区分甲醇、乙醇、丙醇和丁醇。此外，这些器件显示出快速的感应速度，达到₉₀响应时间约为 3 秒。在环境气氛下进行 60 天的存储测试后，器件表现出显着的稳定性，而传感响应的变化可以忽略不计。此外，传感器通过演示显示出有趣的潜力，其中设备可以检测伏特加中掺杂的 1% 甲醇。该结果提供了一种快速检测不同醇类和相应异构体的新方法，并使 IC-MOF 传感器在化学传感中具有竞争力。

更新日期：2022-08-04

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