文献类型：期刊文献

英文题名：Visual detection of anti-icing fluids freezing by a low-temperature viscosity-sensitive aggregation-induced emission probe

作者：Zhang, Honghong;Li, Fanghui;Yu, Jiahong;Zhao, Weijun[1]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai, Peoples R China; East China Univ Sci & Technol, Inst Fine Chem, Frontiers Sci Ctr Materiobiol & Dynam Chem, Joint Int Res Lab Precis Chem & Mol Engn,Feringa N, Shanghai, Peoples R China

年份：2025

卷号：3

期号：1

外文期刊名：SMART MOLECULES

收录：WOS:【ESCI(收录号:WOS:001499282100001)】；

基金：The authors are grateful to financial support from the National Natural Science Foundation of China (9235630033, 22105069), Shanghai Pujiang Program (20PJ1402900), Shanghai Natural Science Foundation (21ZR1418400), Innovation Program of Shanghai Municipal Education Commission (2023FGS01), Natural Science Foundation of Jiangsu Province (BK20231225).

语种：英文

外文关键词：aggregation-induced emission; anti-icing fluids; fluorescent probe; icing detection; viscosity-sensitive probe

摘要：Icing detection is critically important for preventing safety accidents and economic losses, especially concerning ice formation from invalidated anti-icing fluids (water and ethylene glycol) under extreme conditions. Traditional technologies like ultrasonics and capacitor-antenna face challenges with limited detection areas, lower accuracy, and susceptibility to electromagnetic interference. Here, we introduce a novel viscosity-ultrasensitive fluorescent probe 4 ',4 & tprime;-(2,2-diphenylethene-1,1-diyl) bis-(3,5-dicarboxylate) (TPE-2B4C) based on AIEgens for monitoring ice formation of anti-icing fluids in low-temperature environments. TPE-2B4C, consisting of four sodium carboxylate groups and multiple freely rotating benzene rings, demonstrates outstanding solubility in anti-icing fluids and exhibits no fluorescent background signal even at low temperatures (<-20 degrees C). Upon freezing, TPE-2B4C relocates from the water phase to higher viscosity ethylene glycol, causing restriction of benzene rings and a significantly increased green fluorescence signal. TPE-2B4C can successfully determine whether the anti-icing fluids are icing from -5 to -20 degrees C with a high contrast ratio. Due to its simple setup, fast operation, and broad applicability, our new method is anticipated to be employed for rapid, real-time, and large-scale icing detection.