Self-assembly of triangular polyoxometalate-organic hybrid macroions in mixed solvents.

Triangular-shaped inorganic-organic hybrids with three polyoxometalate (POM) clusters as polar head groups are found to self-assemble into blackberry structures in water-acetone solvent mixtures containing 65-95 vol% acetone. The driving force for the self-assembly of the hybrids is shown to originate from the electrostatic counterion-cluster interactions.

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