Chitin-Based Functional Films for the Colorimetric Detection of Ethylene Glycol,Advanced Engineering Materials

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Chitin-Based Functional Films for the Colorimetric Detection of Ethylene Glycol
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2024-02-26 , DOI: 10.1002/adem.202301796
Dong Jin Han ₁ , In Woo Park ₂ , Chengmin Zhang ₁ , Kwang Heo _{2,

3} , Byung Yang Lee ₁

Affiliation

A new method is developed for producing large-area color thin films for the colorimetric detection of ethylene glycol. This method is based on thermal evaporation of chitin. This process enables easy manipulation of the thickness and color patterns of the film by using shadow masks and repeated evaporation. This film is used to demonstrate a colorimetric sensor for the detection of ethylene glycol gas. The use of chitin allows the manufacture of inexpensive and environment-friendly gas detectors. When the film is exposed to target gas, the film reacts with ethylene glycol and hydroxyl group on the chitin-film by etherification. Then the films undergo both chemical and structural changes, resulting in color changes at low ppm concentrations. It is able to compare the sensor reaction to gases with and without the hydroxyl group. The selectivity of the sensor is confirmed by analyzing the gas containing the hydroxyl group through the linear discriminant analysis (LDA) method. It is expected that the results will be utilized to provide low-cost and low-power systems for gas monitoring.

中文翻译：

用于比色检测乙二醇的甲壳素功能膜

开发了一种生产大面积彩色薄膜的新方法，用于比色检测乙二醇。该方法基于甲壳素的热蒸发。该工艺可以通过使用荫罩和重复蒸发来轻松控制薄膜的厚度和颜色图案。该影片用于演示用于检测乙二醇气体的比色传感器。使用甲壳素可以制造廉价且环保的气体探测器。当薄膜暴露于目标气体时，薄膜与乙二醇和甲壳素薄膜上的羟基发生醚化反应。然后薄膜会发生化学和结构变化，导致低 ppm 浓度下的颜色变化。它能够比较传感器对带有和不带有羟基的气体的反应。通过线性判别分析（LDA）方法分析含有羟基的气体来确认传感器的选择性。预计该成果将用于提供低成本、低功耗的气体监测系统。

更新日期：2024-02-26

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