A 8-hydroxyquinoline-based derivative was designed and synthesized, which is shown to act as a highly sensitive fluorescent probe for formaldehyde in aqueous solution. Based on the photo induced electron transfer (PET) process, addition of formaldehyde greatly enhanced the fluorescence of the probe. Formaldehyde can be detected quantitatively in the concentration range from 900 nM to 1.3 × 10⁻⁴ M and the detection limit on fluorescence response of the probe can be as low as 900 nM. The proposed method was successfully employed for preliminary application in several commercially available foods. Moreover, it has been successfully blended with a host polymer polyvinyl alcohol and the polymer containing the probe has been made in nanofiber form via electrospinning. The fluorescence of the nanofibers could also be enhanced after they were immersed into water solution of formaldehyde.

设计并合成了一种基于8-羟基喹啉的衍生物，该衍生物可作为水溶液中甲醛的高灵敏度荧光探针。基于光致电子转移（PET）过程，甲醛的添加大大增强了探针的荧光。可以在900 nM至1.3×10 ^-4的浓度范围内定量检测甲醛 M和探针的荧光响应的检测限可以低至900 nM。所提出的方法已成功地用于几种商业食品中的初步应用。而且，它已经成功地与主体聚合物聚乙烯醇共混，并且包含探针的聚合物已经通过静电纺丝制成纳米纤维形式。将纳米纤维浸入甲醛水溶液后，其荧光也可以增强。