High‐Nuclearity Polyoxometalate‐Based Metal–Organic Frameworks for Photocatalytic Oxidative Cleavage of C−C Bond

exhibits superior activity towards photocatalytic oxidative cleavage of C-C bond for a series of lignin models. This work not only provides a strategy to build high-nuclearity POM cluster-based frameworks, but also demonstrates their great potential as functional materials for green catalysis.