Tunable Aggregation-Induced Fluorescent and Pressure-Responsive Luminescence Supramolecular Cages Achieved by Subcomponent Self-Assembly

Three discrete tetrahedral metallo-supramolecular cages were designed and constructed using truxene-pended base ligands.Owing to the synergistic rigidifying effect of unsymmetric cyano-substituted oligo(p-phenylene-vinylene)(u-COPV)suspended by the truxene skeleton,the resulting supramolecular cages were confirmed to exhibit significant aggregation-induced emission(AIE)accompanied by an interest-ing solvatochromic fluorescent behavior as well as a porous honeycomb-like state during aggregation.In particular,the anti-counterfeiting performance and emission behaviors of the cages in the solid state under external hydrostatic pressure were investigated.