Related Experiment Video
Updated: Jun 1, 2025

Optical Detection of E. coli Bacteria by Mesoporous Silicon Biosensors
Published on: November 20, 2013
Novel Nitrogen Hybrid F- Sensors Based on ESIPT Mechanism Achieving Super Low Detection Limits
Zeyang Zhu1, Zixuan Xu2, Xuemei Li1
1Xinjiang Key Laboratory of New Energy and Energy Storage Technology, Xinjiang Institute of Technology, Aksu, China.
Abstract:
Two novel nitrogen hybrid fluorescent sensors based on the ESIPT mechanism were successfully synthesized for the detection of fluoride ions (F-), and they exhibit high sensitivity and selectivity with a fast response. The detection limits even reach the parts per billion level. With the addition of F-, both sensors showed a ratiometric fluorescence change with a large Stokes shift. According to the hydrogen-1 (1H) NMR titration, it was confirmed that the desilication reaction occurred between the sensors and F-. This work provides guidance for the subsequent development of F- fluorescence sensors.
Related Concept Videos
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
Electrospray Ionization (ESI) Mass Spectrometry
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
Gas Chromatography: Types of Detectors-II
High-Performance Liquid Chromatography: Types of Detectors

