harmful to human health; therefore, it is essential to develop efficient methods to detect Fe3+. Herein, a new aggregation-induced emission (AIE) ligand (L), 4,4′-((9H-fluoren-9-ylidene)-methylene)dipyridine, was successfully synthesized and applied to construct a luminescent Cd(II)–organicframework [Cd(NDA)(L)(H2O)2]n (1) with a two-dimensional architecture (H2NDA = 1,4-naphthalenedicarboxylic acid). Specially