Rational design of a colorimetric and ratiometric fluorescent chemosensor based on intramolecular charge transfer (ICT).
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.
Shao
Jie
J
Department of Chemistry, Nankai University, Tianjin 300071, PR China.
Lin
Hai
H
Lin
Huakuan
H
D003124:Colorimetry / Q000379:methods*; D004583:Electrons; D005456:Fluorescent Dyes / Q000032:analysis* / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010777:Photochemistry; D013053:Spectrophotometry; D017186:Titrimetry
D005456:Fluorescent Dyes