Film-Based Fluorescent Sensor for Monitoring Ethanol-Water-Mixture Composition via Vapor Sampling
Film-Based Fluorescent Sensor for Monitoring Ethanol-Water-Mixture Composition via Vapor Sampling
复制标题
DOI：
10.1021/acs.analchem.8b04897
复制
发表时间：
2018-12-04
影响因子：
7.4
通讯作者：
Fang, Yu
中科院分区：
文献类型：
--
作者：
Huang, Rongrong;Liu, Ke;Fang, Yu
多年来，通过气相取样原位、在线、非接触和快速监测乙醇-水混合物的组成一直是一个挑战。在这项工作中，我们首次报道了一种基于薄膜的荧光传感器，显示出前所未有的能力来区分乙醇-水混合物的组成。重要的是，混合物中的乙醇含量可以从0到100%（v/v）变化，响应时间小于2 s，并且传感是完全可逆的。更重要的是，通过气相取样进行监测，避免了样品污染。其背后的原理是归因于传感单元的荧光量子产率的巨大差异，一种新设计和合成的单取代的荧光o-碳硼烷衍生物（ZPCarb），在两种溶剂中。此外，该传感器的开发是成功地用于四个商业白酒中乙醇含量的测定，这表明其潜在的应用在饮料的质量控制，在监测发酵过程中，和在其他过程。
In situ, on line, noncontact, and fast monitoring of the compositions of ethanol water mixtures via vapor-phase sampling has remained a challenge for years. In this work, we report for the first time a film-based fluorescent sensor showing unprecedented ability to discriminate the compositions of ethanol-water mixtures. Importantly, ethanol contents in the mixtures can vary from 0 to 100% (v/v), the response time is less than 2 s, and the sensing is fully reversible. More importantly, the monitoring was performed via vapor-phase sampling, avoiding sample contamination. The principle behind it is ascribed to the big difference in the fluorescent quantum yield of the sensing unit, a newly designed and synthesized monosubstituted fluorescent o-carborane derivative (ZPCarb), in the two solvents. In addition, the sensor as developed was successfully used for the determination of ethanol contents in four commercial liquors, suggesting its potential application in the quality control of beverages, in monitoring fermentation processes, and in other processes.