Stereocontrolled Self-Assembly of Ln(III)-Pt(II) Heterometallic Cages with Temperature-Dependent Luminescence.

Structurally well-defined discrete d/f heterometallic complexes show diverse application potential in electrooptic and magnetic materials. However, precise control of the component and topology of such heterometallic compounds with fine-tuned photophysical properties is still challenging. Herein, we report the stereocontrolled syntheses of a series of Ln-Pt heterometallic cages through coordination-driven self-assembly of enantiopure alkynylplatinum-based metalloligands (L, L) with lanthanide ions (Ln = Eu, Yb, Nd, Lu).

A class of organic cages featuring twin cavities.

A variety of organic cages with different geometries have been developed during the last decade, most of them exhibiting a single cavity. In contrast, the number of organic cages featuring a pair of cavities remains scarce. These structures may pave the way towards novel porous materials with emergent properties and functions.

Chiral auxiliary and induced chiroptical sensing with 5d/4f lanthanide-organic macrocycles.

A stereocontrolled self-assembly of 5d/4f heterometal-organic macrocycles has been realized by a post-assembly chiral auxiliary approach. Interligand π-π stacking interactions promoted chiral transfer from point-chirality of the auxiliary ligand to metal centers and then the helicates to produced CD and CPL active europium assemblies, facilitating a feasible enantiomeric excess determination by induced chiroptical signals.

Strongly luminescent 5d/4f heterometal-organic macrocycles with open metal sites: post-assembly modification and sensing.

A series of strongly luminescent 5d/4f heterometal-organic macrocycles formulated as Ln2(Pt-L)2 have been constructed from a preformed cis-blocked alkynylplatinum metalloligand (Pt-L) and lanthanide (Ln = LaIII, EuIII, LuIII) ions. Open metal sites on the lanthanide centres of the heterometal-organic macrocycles facilitate not only the post-assembly modification leading to great enhancement of the luminescence, but also the displacement sensing toward toxic thiophosphonates.