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

Autor: A. Gale, Philip, A. Gale, Philip, J. Twyman, Lance, I. Handlin, Cristin, L. Sessler, Jonathan
Zdroj: Chemical Communications; September 21, 1999, Vol. 1999 Issue: 18 p1851-1852, 2p
Abstrakt: The intense yellow colour of the 4-nitrophenolate anion 2, in MeCN or CH2Cl2 solution, dissipates upon complex formation with meso-octamethylcalix[4]pyrrole 1; the complex may be used as a colourimetric sensor for halide anions, such as fluoride, that displace the phenolate anion thereby restoring the yellow colour, characteristic of free 4-nitrophenolate anion, to solutions containing 1, 2 and the anion in question.
Databáze: Supplemental Index