Zero-dimensional ionic antimony halide inorganic–organic hybrid with strong greenish yellow emission

Here, we reported a new zero-dimensional ionic antimony halide inorganic–organic hybrid structure, H3SbBr6(L)6 (L = 2-(3-methyl-1H-imidazol-3-ium-1-yl)acetate). The inorganic component is a molecular SbBr63− anion with an octaheral geometry for the metal. Each individual anion is surrounded by six organic ligands. The compound emits bright green-yellow light with high quantum efficiency (IQY = 55% at λex = 360 nm). Combined with its low toxicity and high stability, the title compound serves as a good example of lighting phosphors based on antimony halide hybrid materials.