Blue-Emitting Zero-Dimensional Inorganic-Organic Hybrids Constructed from Beta-Diketonate Ligands and Bulky Organic Cations.

Two zero-dimensional inorganic-organic hybrids, namely, [C 4 mim][Cd(TCDPPA) 3 ] ( 1 ) and [C 4 mpy][Cd(TCDPPA) 3 ] ( 2 ), where (TCDPPA) - = 2,2,2-trichloro- N -(di(pyrrolidin-1-yl)phosphoryl)acetamide, (C 4 mim) + = 1-butyl-3-methylimidazolium, and (C 4 mpy) + = 1-butyl-4-methylpyridinium, have been synthesized via metathesis reactions and characterized systematically. These ionic cadmium-containing inorganic-organic hybrid compounds are assembled from a bulky organic cation and a complex anion constructed from the chelation of three TCDPPA ligands to one cadmium ion. These compounds possess wide band gaps and emit in the deep-blue region intensely with a quantum yield as high as 34.04%. The success of this work provides a new method for the design and fabrication of high-efficiency blue-emitting materials.