A cage-based cationic body-centered tetragonal metal-organic framework: single-crystal to single-crystal transformation and selective uptake of organic dyes.

A cage-based cationic body-centered metal-organic framework was successfully synthesized using a custom-designed bifunctional triazolcarboxylate ligand. It shows interesting single-crystal-to-single-crystal transformation upon solvent exchange process and selective uptake of organic dyes.