Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 223, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2019.117344
Keywords
Near-infrared fluorescence; Hydrazine; Bioimaging; High selectivity
Categories
Funding
- Natural Science Foundation of Shanghai [16ZR1408000]
- National Natural Science Foundation of China [21576087]
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Developing fluorescent probes for selective determination of the toxic and carcinogenic hydrazine are pretty significant. Herein, a rhodamine dye coupled to naphthalene was selected as a near-infrared fluorophore and acetyl group as a trigger unit for hydrazine sensing with a Stokes shifts of 62 nm. The probe showed about 77-fold NIR fluorescence enhancement in the presence of hydrazine. In addition, the detection limit was as low as 3.4 ppb, and the fluorescence intensity at 654 nm showed a satisfactory linearity with the concentration range of hydrazine from 0 to 120 mu M. More importantly, the practical utility of probe has been successfully proved through the fluorescence bioimaging of hydrazine in living cells with low cytotoxicity and quantitative N-2 H-4 detection in environmental water samples. (C) 2019 Elsevier B.V. All rights reserved.
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