A Colorimetric Approach to Anion Sensing: A Selective Chemosensor of Fluoride Ions, in which Color is Generated by Anion‐Enhanced π Delocalization | Zendy

Vázquez Miguel | Zendy; Fabbrizzi Luigi | Zendy; Taglietti Angelo | Zendy; Pedrido Rosa M. | Zendy; GonzálezNoya Ana M. | Zendy; Bermejo Manuel R. | Zendy

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A Colorimetric Approach to Anion Sensing: A Selective Chemosensor of Fluoride Ions, in which Color is Generated by Anion‐Enhanced π Delocalization

Author(s) -

Vázquez Miguel,

Fabbrizzi Luigi,

Taglietti Angelo,

Pedrido Rosa M.,

GonzálezNoya Ana M.,

Bermejo Manuel R.

Publication year - 2004

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200353148

Subject(s) - chromogenic , thiourea , delocalized electron , ion , fluoride , chemistry , hydrogen bond , combinatorial chemistry , photochemistry , inorganic chemistry , molecule , organic chemistry , chromatography

A colorless neutral receptor with no particular chromogenic substituents selectively recognizes fluoride ions with a concomitant development of a yellow color (see scheme). The receptor contains two equivalent arms, each equipped with a thiourea fragment. Color originates from the extended π delocalization induced by the strong hydrogen‐bonding interaction of the F − ion with the internal NH groups of thiourea moieties.

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