一种用于检测气态甲醛的新型荧光探针

A Novel Fluorescent Probe for the Detection of Gaseous Formaldehyde

甲醛是一种常见的挥发性有机物(VOC),当其浓度达到一定水平时,会对人体健康产生危害,如刺激眼和鼻黏膜、引起咽喉疼痛、咳嗽和气喘等。长期接触甲醛会对人体造成严重损害。为此,本文设计合成了一种荧光探针4-肼基-1,8-萘基-1,2-苯并咪唑(TF),其肼基团与甲醛的羰基部分缩合形成腙的反应可以引起体系荧光强度的变化进而实现甲醛的检测。此外,为了直接检测气态的甲醛,利用TF制备了荧光试纸,探究其在甲醛定性检测中的应用,同时还探究了一种简易监测装置用于室内甲醛的定量测量。

Formaldehyde is a common volatile organic compound(VOC)that can be harmful to human health when its concentration reaches certain levels.It can cause irritation to the eyes and nasal mucosa,as well as throat pain,coughing,and asthma.Long-term exposure to formaldehyde can cause serious damage to the human body.In response to this issue,we have designed and synthesized a fluorescent probe called TF(4-hydrazinyl-1,8-naphthalimide-1,2-benzoimidazole).The reaction between its hydrazine group and the carbonyl part of formaldehyde to form hydrazone can cause changes in the fluorescence intensity of the system,thereby achieving the detection of formaldehyde.Furthermore,to directly detect gaseous formaldehyde,we have developed fluorescent test paper using TF and investigated its application in qualitative detection of formaldehyde.We have also explored a simple monitoring device for quantitative measurement of indoor formaldehyde levels.