A colourimetric calix[4]pyrrole-4-nitrophenolate based anion sensor

Authors
Gale, PA Twyman, LJ Handlin, CI Sessler, JL
Citation
Pa. Gale et al., A colourimetric calix[4]pyrrole-4-nitrophenolate based anion sensor, CHEM COMMUN, (18), 1999, pp. 1851-1852
Citations number
20
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
18
Year of publication
1999
Pages
1851 - 1852
Database
ISI
SICI code
1359-7345(19990921):18<1851:ACCBAS>2.0.ZU;2-H
Abstract
The intense yellow colour of the 4-nitrophenolate anion 2, in MeCN or CH2Cl 2 solution, dissipates upon complex formation with meso-octamethylcalix[4]p yrrole 1; the complex may be used as a colourimetric sensor for halide anio ns, such as fluoride, that displace the phenolate anion thereby restoring t he yellow colour, characteristic of free 4-nitrophenolate anion, to solutio ns containing 1, 2 and the anion in question.