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  • Title: Rational design of a colorimetric and ratiometric fluorescent chemosensor based on intramolecular charge transfer (ICT).
    Author: Shao J, Lin H, Lin H.
    Journal: Talanta; 2008 Oct 19; 77(1):273-7. PubMed ID: 18804632.
    Abstract:
    A simple colorimetric and ratiometric fluorescent anion sensor 1, 3,6-dichloro-1,8-dinitrocarbazole, was rationally designed and synthesized on basis of the mechanism of intramolecular charge transfer (ICT). In DMSO solutions of 1, the presence of AcO(-), F(-) and H(2)PO(4)(-) gave birth to the formation of a 2:1 host-to-guest complex, which was synchronously accompanied by a 'naked-eye' color change from light yellow to purple, a red-shift of the absorption spectrum and a blue-shift of the emission spectrum.
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