Near-Infrared Sensing Properties of Dimethlyamino-Substituted BF2−Azadipyrromethenes
Organic Letters2006Vol. 8(16), pp. 3493–3496
Citations Over TimeTop 10% of 2006 papers
Abstract
[reaction: see text] The synthesis and sensing characteristics of a new class of organic colorimetric and fluorometric chemosensor which operates in the 850-650 nm spectral region is outlined. Judicious placing of amine substituents on the BF2-chelated tetraarylazadipyrromethene chromophore generates a triple absorption and emission responsive sensor. Dramatic pH responsive absorption and fluorescence changes can be observed across a broad acidity range, from pH 5 to 6 M HCl, in conjunction with a visible colorimetric change from red to purple to blue.
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