Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 271, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2022.120915
Keywords
Chemosensor; Hypochlorite; PH; Ratiometric/colorimetric; Bioimaging
Categories
Funding
- National Natural Science Foundation of China [81771891, 82072317]
- Natural Science Foundation of Guangdong Province [Q195026028]
- Henan Province Science and Technology Attack Plan Foundation [212102110241]
- Key Scientific Research Project of Higher Education of Henan Province [21A350006]
- Health Commission of Zhejiang Province [2020KY632]
- Wenzhou Municipal Science and Technology Bureau [Y20190058, Y2020223]
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Researchers have developed a novel dual-functional chemosensor, CMHN, which can sensitively detect changes in HClO and pH. The sensor has been successfully applied in imaging detection of HClO and pH changes in aqueous solutions, live cells, and zebrafish, demonstrating high sensitivity, quick response time, and high selectivity.
Both HClO and pH are essential players in multiple biological processes, which thus need to be controlled properly. Dysregulated HClO or pH correlates with many diseases. To meet these challenges, we need to develop highly competent probes for monitoring them. Over the years, despite a rich history of the development of HClO or pH probes, those that can do both jobs are still deficient. Herein, we present a novel dual-functional chemosensor, CMHN, which exhibits a blue and red shift of its fluorescence emission upon reacting with HClO or OH-, respectively. CMHN was successfully harnessed in the imaging detection of HClO or OH- in aqueous solutions, live cells, and zebrafish. Results indicated CMHN can detect HClO with high sensitivity (LOD -132 nM), a quick response time (<70 s), and high selectivity over dozens of interfering species through a colorimetric and ratiometric response. Besides, CMHN can probe pH changes sensitively and reversibly. Its working mechanism was verified by DFT calculations. These superior features make CMHN excel among the HClO or pH probes reported so far. Taken together, CMHN replenishes the deficiency in currently developed HClO or pH probes and paves the way for developing multifunctional HClO or pH probes in the future. (C) 2022 Elsevier B.V. All rights reserved.
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