School of Chemical and Biomolecular Engineering and Centre for Advanced Food Enginomics (CAFE), The University of Sydney, Sydney, New South Wales 2006, Australia.
School of Chemical Engineering and Australian Centre for Nanomedicine (ACN), The University of New South Wales, Sydney, New South Wales 2052, Australia.
ACS Sens. 2020 Jul 24;5(7):1921-1928. doi: 10.1021/acssensors.0c00117. Epub 2020 Jul 2.
Ethylene is a hormone that plays a critical role in many phases of plant growth and fruit ripening. Currently, detection of ethylene heavily relies on sophisticated and time-consuming conventional assays such as chromatography, spectroscopy, and electrochemical methods. Herein, we develop a polydiacetylene-based sensor for the detection of ethylene via color change. The sensors are prepared through the reaction between polydiacetylene and Lawesson's reagent that results in decorating polydiacetylene with terminal thiol groups. Upon exposure to ethylene, the sensor changes color from blue to red which is visible to the naked eye. Our device shows a limit of detection for ethylene at 600 ppm in air and can be applied for monitoring ethylene released during the fruit-ripening process. Such easy-to-use ethylene sensors may find applications in plant biology, agriculture, and food industry.
乙烯是一种激素，在植物生长和果实成熟的许多阶段都起着关键作用。目前，乙烯的检测主要依赖于复杂且耗时的传统分析方法，如色谱法、光谱法和电化学方法。在此，我们通过颜色变化开发了一种基于聚二乙炔的传感器来检测乙烯。传感器是通过聚二乙炔与劳森试剂的反应制备的，这导致末端硫醇基团修饰聚二乙炔。暴露于乙烯时，传感器的颜色从蓝色变为红色，肉眼可见。我们的设备在空气中对乙烯的检测限为 600ppm，可以用于监测果实成熟过程中释放的乙烯。这种易于使用的乙烯传感器可应用于植物生物学、农业和食品工业。
