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Published on: August 20, 2012
Rational design of a colorimetric and ratiometric fluorescent chemosensor based on intramolecular charge transfer
Jie Shao1, Hai Lin, Huakuan Lin
1Department of Chemistry, Nankai University, Tianjin 300071, PR China.
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.
