Department of Life Science, Luoyang Normal University, Luoyang 471934, PR China.
School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang 524048, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2020 Jan 5;224:117446. doi: 10.1016/j.saa.2019.117446. Epub 2019 Jul 31.
Anionic surfactants were widespread used in car cleaning agents, household detergents, agricultural and industrial processes, and considered as a major source of environmental pollutant. Therefore, it is necessary to develop a fast, simple, highly selective and sensitive probe for the detection of anionic surfactants. Here, we synthesized two aggregation induced emission (AIE)-active molecules 4,4',4″,4‴-(ethene-1,1,2,2-tetrayltetrakis(benzene-4,1-diyl))tetrakis (1-(4-bromobenzyl)pyridin-1-ium) bromide (TPE-Br) and 4,4',4″,4‴-(ethene-1,1,2,2-trayltetrakis(benzene-4,1-diyl))tetrakis(1-methylpyridin-1-ium)iodide (TPE-I), which were then applied as fluorescence probes for detecting sodium dodecyl sulfate (SDS) with high selectivity and sensitivity. In the presence of SDS, a multi-fold fluorescence emission intensity enhancement was observed in both two probes (TPE-Br and TPE-I) due to the electrostatic self-assembly of AIE molecular. The limits of detection are 71.5 and 120 nM for TPE-Br and TPE-I, respectively. This study may provide a new strategy for environmental monitoring by AIE-based fluorescent probe.
阴离子表面活性剂广泛应用于汽车清洁剂、家用洗涤剂、农业和工业过程中，被认为是环境污染物的主要来源。因此，开发一种快速、简单、高选择性和灵敏的探针来检测阴离子表面活性剂是必要的。在这里，我们合成了两种聚集诱导发射（AIE）活性分子 4,4',4″,4‴-(乙烯-1,1,2,2-四亚基四苯-4,1-二基)四(1-(4-溴苄基)吡啶-1-鎓)溴化物（TPE-Br）和 4,4',4″,4‴-(乙烯-1,1,2,2-四亚基四苯-4,1-二基)四(1-甲基吡啶-1-鎓)碘化物（TPE-I），然后将它们用作荧光探针，用于高选择性和灵敏度地检测十二烷基硫酸钠（SDS）。在 SDS 的存在下，由于 AIE 分子的静电自组装，两种探针（TPE-Br 和 TPE-I）的荧光发射强度都增强了多倍。TPE-Br 和 TPE-I 的检测限分别为 71.5 和 120 nM。这项研究可能为基于 AIE 的荧光探针的环境监测提供了一种新策略。
