A bisferrocene-benzobisimidazole triad as a multichannel ditopic receptor for selective sensing of hydrogen sulfate and mercury ions

María Alfonso; Alberto Tárraga; Pedro Molina

doi:10.1021/ol202723d

A bisferrocene-benzobisimidazole triad as a multichannel ditopic receptor for selective sensing of hydrogen sulfate and mercury ions

Org Lett. 2011 Dec 16;13(24):6432-5. doi: 10.1021/ol202723d. Epub 2011 Nov 11.

Authors

María Alfonso¹, Alberto Tárraga, Pedro Molina

Affiliation

¹ Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, E-30100, Murcia, Spain.

PMID: 22077401
DOI: 10.1021/ol202723d

Abstract

The bisferrocene-benzobisimidazole triad behaves as a selective redox and fluorescent chemosensor for HSO(4)(-) and Hg(2+) ions, exhibiting an easily detectable signal change in both the redox potential of the ferrocene/ferrocinium redox couple and in the emission band which is red-shifted (Δλ = 10-13 nm) and enhanced in intensity (Chelation Enhanced Fluorescence, CHEF = 486-225) upon complexation with these ions, in EtOH solutions.