title: The anion-binding polyanion: a molecular cobalt vanadium oxide with anion-sensitive visual response.
abstract: An anionic molecular cobalt vanadium oxide cluster, (n-Bu4N)3[Co(AcO)V4O12] and its use as anion binding site is reported. Cluster formation is controlled by an anion-dependent dynamic solution equilibrium. Reversible anion binding in solution leads to significant spectral changes, allowing the ratiometric optical detection of the anion concentration in situ, even under harsh thermal conditions (T = 90 °C). Comparative studies showed that the spectral response is dependent on the type of anion so that carboxylates, weakly coordinating anions and halides can be distinguished.
authors.affiliation: Ulm University, Institute of Inorganic Chemistry I, Albert-Einstein-Allee 11, 89081 Ulm, Germany. carsten.streb@uni-ulm.de.
authors.forename: Andrey
authors.initials: A
authors.lastname: Seliverstov
authors.forename: Johannes
authors.initials: J
authors.lastname: Forster
authors.forename: Magdalena
authors.initials: M
authors.lastname: Heiland
authors.forename: Johannes
authors.initials: J
authors.lastname: Unfried
authors.forename: Carsten
authors.initials: C
authors.lastname: Streb
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D004355:Drug Stability; D010087:Oxides / Q000737:chemistry*; D000071228:Polyelectrolytes; D011108:Polymers / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014639:Vanadium / Q000737:chemistry*
chemical_list: D003035:Cobalt; D010087:Oxides; D000071228:Polyelectrolytes; D011108:Polymers; D014639:Vanadium; C060728:cobalt oxide