Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 135, Issue 14, Pages 5312-5315Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja401555y
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Funding
- Agency of Science, Technology and Research (A*Star) of Singapore [112 177 0036]
- National Natural Science Foundation of China [21228702]
- National Institutes of Health [CA129421]
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We synthesized complexes of Ni(II) with dithiocarbamate ligands derived from the ortho and para isomers of sulforhodamine B fluorophores and demonstrated they are highly selective in reactions with nitrogen dioxide (NO2). Compared with the para isomer, the ortho isomer showed a much greater fluorescence increase upon reaction with NO2, which led to oxidation and decomplexation of the dithiocarbamate ligand from Ni(II). We applied this probe for visual detection of 1 ppm NO2 in the gas phase and fluorescence imaging of NO2 in macrophage cells treated with a nitrogen dioxide donor.
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