Platinum(ii)–silver(i) heterometallic cluster complexes are used as a new type of phosphorescent dopant to achieve high-efficiency OLEDs with 67.4 cd A−1peak current efficiency (CE) and 17.4% external quantum efficiency (EQE).

Two new coordination supercontainers have been successfully isolated from the self-assembly reactions of the container precursor p-phenylsulfonylcalix [4]arene, Ni(II) or Co(II) ion, and diphenylmethane-4,4'-dicarboxylic acid. Crystal structure analysis revealed that these two coordination supercontainers possess a similar endo cavity and two deeper exo cavities compared to the related supercontainers based on p-tert-butylsulfonylcalix [4]arene . Gas and vapor adsorption studies indicated that the new compounds are permanently porous and show much better CO2/O2 and CO2/N2 selectivity and higher vapor adsorption than the tert-butyl analogues. Molecular containers possessing hollow space have received considerable attention in view of their promising applications in a wide array of areas, including stabilization of highly reactive species, transportation of small molecules, gas storage and separation, sensing, supramolecular catalysis and molecular recognition.[1-6] Because of the relatively robust and reversible nature of coordination bonding between metal and ligand, coordination-driven self-assembly affords an excellent means to construct elegant supramolecular architectures containing hollow structures.[7-13] We have focused on the construction of coordination containers featuring unique multiple binding cavities within a single host structure by incorporating sulfonylcalix[4]arenes[14] as container precursors. A new family of coordination containers, namely, metal-organic supercontainers (MOSCs), have been obtained from the assembly of sulfonylcalix[4]arenes, divalent metal ions and carboxylate linkers of trigonal, linear, angular-planar, or angularnonplanar shape.[15-18] The lower rim of sulfonylcalix[4]arenes was bridged by the carboxylate linkers via both binding to the same metal ions to generate four prototypes of MOSCs that possess a characteristic multi-pore architecture, i.e., an endo cavity and multiple exo cavities. Related