Journal
METHODS AND APPLICATIONS IN FLUORESCENCE
Volume 5, Issue 1, Pages 1-7Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2050-6120/aa5387
Keywords
fluorescent probe; coumarin-anhydride; hydrazine; Gabriel reaction; theoretical calculations
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Funding
- National Natural Science Foundation of China [91027041, 51673113, 51273108]
- National Basic Research Program of China [2013CB834803]
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In this paper, a new coumarin-based fluorescent probe for hydrazine was rationally designed and successfully synthesized based on the Gabriel reaction. This novel probe enabled highly sensitive and selective detection of hydrazine. The detection limit was 43.6 nM(1.49 ppb). It displayed distinct changes in the intensity of both absorption and emission spectra upon the. addition of hydrazine and. remarkable color changes can be visually observed. The sensing mechanism of this probe toward hydrazine was characterized by 1 H. NMR and mass spectroscopy. Moreover, with the help of theoretical calculations, the. sensing capability of this probe for hydrazine detection was described: the electron structure. was modulated by a three-substituted group of coumarin once upon the. addition of hydrazine. In addition, a test paper experiment indicated its great potential in environment monitoring.
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