A novel ratiometric fluorescent Fe3+ sensor based on a phenanthroimidazole chromophore.

Abstract

Phenanthroimidazole derivative 1 has been developed as a rare example of ratiometric fluorescent sensors for Fe(3+). Interestingly, upon treatment with Fe(3+), 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 Fe(3+) is in the 1.0x10(-5)-1.5x10(-4) M concentration range and the detection limit is 5.26x10(-6) M. In addition, the sensor showed good selectivity to Fe(3+) with the selectivity coefficients (K(Fe3+) = S(Fe3+)/S(0) of Fe(3+) over other metal ions tested in the range of 5-68.

DOI: 10.1016/j.aca.2008.12.049
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@article{Lin2009ANR, title={A novel ratiometric fluorescent Fe3+ sensor based on a phenanthroimidazole chromophore.}, author={Weiying Lin and Lingliang Long and Lin Yuan and Zengmei Cao and Jianbo Feng}, journal={Analytica chimica acta}, year={2009}, volume={634 2}, pages={262-6} }