The Hofmeister series for anions can be extented towards more chaotropic species such as the polyoxometalates.
We propose a simple experimental procedure based on the cloud point measurement of a non-ionic surfactant as a tool for (i) estimating the super-chaotropic behaviour of polyoxometalates (POMs) and for (ii) establishing a classification of POMs according to their affinity towards polar surfaces.
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Thomas Buchecker, Philipp Schmid, Séverine Renaudineau, Olivier Diat, Anna Proust, Arno Pfitzner and Pierre Bauduin, Chem. Comm 54, 1833 (2018)