Hazardous volatile organic compounds (VOCs) can significantly impact human health and the environment. Hence, the detection of VOCs is of foremost importance. A quinoxaline-based fluorimetric probe (1) unveils a notable “turn-on” fluorescence response towards mesitylene in the presence of other VOCs and common interfering ions in aqueous media. The sensing phenomenon involves specific 1 : 1 stoichiometric binding of the probe with mesitylene with a ∼2.66 ppm detection limit. Furthermore, the probe experiences morphological transformations from a fibril-network to a stone-shaped hetero-structure upon treatment with mesitylene, indicating mesitylene induced self-assembly. The detection induced self-assembly of the probe was further corroborated by dynamic-light-scattering (DLS) and fluorescence microscopy study. Importantly, this proposed approach is applicable to detect mesitylene in natural water sources and in the vapor phase using portable, low-cost filter paper strips.

中文翻译：

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含硝基喹喔啉框架的超分子自组装：对 VOC 苯基荧光开启响应起源的洞察

有害的挥发性有机化合物 (VOC) 会严重影响人类健康和环境。因此，VOCs的检测是最重要的。基于喹喔啉的荧光探针 (1) 揭示了在其他 VOC 和水性介质中常见干扰离子存在的情况下，对均三甲苯的显着“开启”荧光响应。传感现象涉及探针与均三甲苯的特定 1:1 化学计量结合，检测限约为 2.66 ppm。此外，探针在用均三甲苯处理后经历了从原纤维网络到石状异质结构的形态转变，表明均三甲苯诱导了自组装。通过动态光散射 (DLS) 和荧光显微镜研究进一步证实了探针的检测诱导自组装。重要的，