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| Detection of ONOO- Using a Portable Fluorescence Sensing Platform Based on Pyronitrile Near-infrared Probe and WeChat Applet |
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| DOI： |
| KeyWord:fluorescent probe near-infrared ONOO- detection WeChat app intelligent assessment |
| Author | Institution |
| WANG Xiao，WANG Xue-chuan，HAN Qing-xin |
1. College of Chemistry and Chemical Engineering，Shaanxi University of Science and Technology，Xi’an ，China; 2. Institute of Biomass and Functional Materials，Shaanxi University of Science and Technology，Xi’an ，China; 3. School of Light Industry Science and Engineering， Shaanxi University of Science and Technology，Xi’an ，China |
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| Abstract: |
| A portable fluorescence sensing platform based on pyronitrile（DCI） near-infrared probe 1a and WeChat applet was constructed for the detection of ONOO-．The near-infrared probe 1a was firstly designed and synthesized based on a DCI fluorescent derivative，which was used for specific detection of ONOO-．The probe itself possess orange fluorescence，and the probe’s phenylboronic acid pinacol ester structure sheds after stimulation with nitrite ONOO-，then the parent intramolecular charge transfer（ICT） effect is restored，resulting in enhanced fluorescence emission and a color change of the probe’s fluorescence from orange to red after activation. Meanwhile，probe 1a exhibited excellent selectivity and anti-interference ability，the ultra-low detection limit reached 97 nmol/L．In addition，a simple detection platform based on a WeChat mini program “Colorimetric acquisition” was established，relying on the correlation between luminous chrominance of probe and ONOO- fluorescence response to probe，which could be used to intelligently evaluate the detection effect of exogenous ONOO-．This detection platform has a potential to become a simple analysis tool for portable and intelligent detection of hazardous substances in the environment．In conclusion，the NIR dye-based probe 1a developed in this paper was applied to the detection of ONOO-，providing a new reference for the intelligent detection of hazardous substances. |
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