Electrospray‐mass spectrometric studies of selectivity of alkali metal cations extraction by calix[4]arene crowns

Article type: Research Article

Authors: Allain, F. | Virelizier, H. | Moulin, C. | Jankowski, C.K.^; | Dozol, J.F. | Tabet, J.C.

Affiliations: DCC/DPE/SPCP/LASO, CEA Saclay, BP2, 91191 Gif/Yvette, France | DCC/DESD/SEP, CEA Cadarache, 13108 Saint Paul Lez Durance Cedex, France | Université de P. et M. Curie, Paris VI, Laboratoire de Chimie Structurale Organique et Biologique UMR 7613, 75252 Paris, France

Note: [] Corresponding author: C.K. Jankowski, Département de chimie et biochimie, Université de Moncton, NB, Canada, E1A 3E9. Tel.: +1 506 858 4331; Fax: +1 506 858 4541; E‐mail: [email protected].

Abstract: Electrospray Ionization Mass Spectrometry (ESI/MS) has quickly become a versatile method of qualitative analysis of a wide variety of host–guest complexes formed in solution. However, considerable controversy exists on how ESI spectra quantitatively reflect and compare to the results obtained on these complexes. The extraction of alkali cations from acidic aqueous solutions by nine various calix[4]arenes‐crown‐6 diluted in NPOE, was studied by using ESI/MS. The stoichiometry of cesium complex and Cs^{+}/Na^{+} selectivity were evaluated.

Keywords: Calixarene crown, alkali metal cations, electrospray, complexation, selectivity

Journal: Spectroscopy, vol. 14, no. 3, pp. 127-139, 2000