A novel fluoride selective optical chemosensor based on internal charge transfer signaling

作者：Mashraqui Sabir H^*; Betkar Rupesh; Chandiramani Mukesh; Quinonero David; Frontera Antonio

来源：Tetrahedron Letters, 2010, 51(4): 596-599.

DOI：10.1016/j.tetlet.2009.11.050

A new internal charge transfer probe, NAPH-1, synthesized by incorporating photoemitive naphthalimide core with an acidic imidazolium ring, offers highly selective colorimetric and ratiometric 'off-on' signaling for targeting F(-), while Cl(-), Br(-), I(-), HSO(4)(-), SCN(-), AcO(-), and NO(3)(-) do not appreciably perturb the photophysical properties of the probe even at relatively higher concentrations than the F(-). Deprotonation of the imidazolium ring, supported by the (1)H NMR and theoritical studies, seems to cause the spectral modulations.

• 出版日期2010-1-27