Unusual visible luminescence of aluminium polyoxocations in aqueous solution†
Abstract
Identification of aluminium polyoxocations, MO4Al12(OH)24(H2O)127/8+ (M = Al, Ga and Ge) (K–MAl12) and Al30O8(OH)56(H2O)2618+ (Al30), by their luminescence is reported. The fluorescence behavior of K–Al13 has been found to differ with different metal ions and anions, implying a new discovery of a potential ion sensor.