Journal
ANALYTICA CHIMICA ACTA
Volume 634, Issue 2, Pages 262-266Publisher
ELSEVIER
DOI: 10.1016/j.aca.2008.12.049
Keywords
Fluorescent sensors; Fluorescence; Iron; Ratiometric; Phenanthroimidazole
Categories
Funding
- Key Project of Chinese Ministry of Education [108167]
- National Science Foundation of China [20872032]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
- State Education Ministry [2007-24]
- Hunan University research funds
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Phenanthroimidazole derivative 1 has been developed as a rare example of ratiometric fluorescent sensors for Fe3+. Interestingly, upon treatment with Fe3+, the sensor displayed a ratiometric fluorescent response with an enhancement of the ratios of emission intensities at 440 and 500 nm from 0.36 to 3.24. The detection range of the sensor for Fe3+ is in the 1.0 x 10(-5)-1.5 x 10(-4) M concentration range and the detection limit is 5.26 x 10(-6) M. In addition, the sensor showed good selectivity to Fe3+ with the selectivity coefficients (KFe3+ = SFe3+/S-0) of Fe3+ over other metal ions tested in the range of 5-68. (C) 2009 Elsevier B.V. All rights reserved.
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