Organoboron-Functionalization Enables the Hierarchical Assembly of Giant Polyoxometalate Nanocapsules.

ABSTRACT: The aggregation of molecular metal oxides into larger superstructures can bridge the gap between molecular compounds and solid-state materials. Here, we report that functionalization of polyoxotungstates with organo-boron substituents leads to giant polyoxometalate-based nanocapsules with dimensions of up to 4 nm. A "lock and key" mechanism enables the site-specific anchoring of aromatic organo-boronic acids to metal-functionalized Dawson anions [M₃ P₂ W₁₅ O₆₂ ]^9- (M=Ta^V or Nb^V ), resulting in unique nanocapsules containing up to twelve POM units. Experimental and theoretical studies provide initial insights into the role of the organo-boron moieties and the metal-functionalized POMs for the assembly of the giant

SUBMITTER: Li S 

PROVIDER: S-EPMC7318661 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature