An AIE-ligand-based coordination polymer with a new wheel-shaped Cd₆ cluster, a unique bamboo-like architecture and highly efficient dual-response sensing properties

It is important and challenging to design and construct coordination polymers (CPs) with special architectures and functions. In this study, a novel CP {[(H3O)(2)(Cd6L6SO4)]3DMF}(n) (1) was synthesized using cadmium sulfate and the AIE ligand di(4-carboxyphenyl)-dibenzofulvene (H2L) through a solvothermal reaction with a one-dimensional bamboo-like architecture for the first time, which was constructed using a novel wheel-shaped [Cd-6(COO)(12)SO4](2-) cluster and angular L bridges. 1 has good water and thermal stabilities and can sensitively, selectively and cyclically detect TNP and MnO4- in an aqueous medium. In particular, the quenching constants of 1 reached 8.95 x 10(4) M-1 (TNP) and 1.10 x 10(5) M-1 (MnO4-), which were higher than those of most CP-based sensor materials. Moreover, the luminescent quenching sensing mechanisms of 1 towards TNP and MnO4- were explored.