A Novel Fluorescent Probe for the Detection of Gaseous Formaldehyde
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-l,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.