Synthesis and properties of hyperbranched fluorescence/phosphorescence hybrid copolymers for white polymer light emitting devices

A potential hyperbranched structure with 9,9-dioctylfluorene and Ir(piq)2acac branches, and three-dimensional-structured spiro[3.3]heptane-2,6-dispirofluorene (SDF) core is synthesized for efficient and stable white polymer light-emitting devices.