High Affinity of Water-Soluble Cryptophanes for Cesium Cations
2012 (English)In: Journal of Organic Chemistry, ISSN 0022-3263, E-ISSN 1520-6904, Vol. 77, no 2, 1198-1201 p.Article in journal (Refereed) Published
Exceptionally high affinity for cesium cations was achieved in aqueous solution using two enantiopure cryptophanes. Complexation of cesium was evidenced by Cs-133 NMR spectroscopy and by electronic circular dichroism (ECD). Binding constants as high as 6 X 10(9) M-1 have been measured by isothermal titration calorimetry (ITC). Very strong complexation of rubidium cations (K similar to 10(6) M-1) has also been measured. Chiral hosts allowed the detection of the two cations at low concentrations (mu M) using ECD.
Place, publisher, year, edition, pages
2012. Vol. 77, no 2, 1198-1201 p.
IdentifiersURN: urn:nbn:se:kth:diva-90648DOI: 10.1021/jo202259rISI: 000299238400045ScopusID: 2-s2.0-84856104601OAI: oai:DiVA.org:kth-90648DiVA: diva2:509926
FunderSwedish e‐Science Research Center
QC 201203132012-03-142012-02-272013-04-08Bibliographically approved