A Highly Potassium-Selective Ratiometric Fluorescent Indicator Based on BODIPY Azacrown Ether Excitable with Visible Light
Organic Letters2005Vol. 7(20), pp. 4377–4380
Citations Over TimeTop 1% of 2005 papers
Mukulesh Baruah, Wenwu Qin, Renaud A. L. Vallée, David Beljonne, Taoufik Rohand, Wim Dehaen, Noël Boens
Abstract
[structure: see text] A potassium-selective fluorescent BODIPY-linked azacrown ether chemosensor has been synthesized using novel substitution reactions of 3,5-dichloroBODIPY. The indicator absorbs and emits light in the visible wavelength range. The dissociation constant Kd for the complex between K+ and the probe is 0.5 mM in acetonitrile. Quantum chemical calculations show that the experimental hypsochromic shifts in absorption and fluorescence upon potassium binding are due to complexation, which induces a large conformational change of the sensor.
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