Lanthanide-Incorporated Polyoxometalates Assembled from Mixed-Heteroatom-Oriented Three-Layered Cage Clusters.

Discovering innovative metal-oxo cluster materials with uncommon building blocks and exploiting their application potentiality are fairly challengeable. Here, we provide a novel type of lanthanide-incorporated polyoxometalates [HN(CH)]NaH{[Ln/Na(HGCA)(HO)][(BiO)(SeO)WO]}·36HO [Ln = Eu (), Er (), HGCA = α-glycolic acid] synthesized by a dual-heteroatom-directed synergetic strategy, which are established from two unique Bi-Se heteroatom-oriented cylindrical three-layered [(BiO)(SeO)WO] cage clusters integrated by lanthanide-organic groups. Compound works as a fluorescence probe for high-sensitivity detection toward a neurotransmitter dopamine. This finding not only shows the enormous possibility and feasibility to create novel polyoxometalate building units by means of the self-categorization of different heteroatoms, which are subsequently employed for further assembly chemistry, but also provides a platform to exploit latent utilizations of polyoxometalate-based materials in the realm of detecting biological molecules.