Abstract

A novel kind of hexa-armed fluorene-benzene copolymer based on a hexaazaisowurtzitane core was synthesized through Suzuki coupling polycondensation. The introduction of this bulky caged-core could not only enhance the photoluminescence quantum efficiency, but also improve the electroluminescence properties, especially suppress the common green-color emission of polyfluorenes (PFs) material during device operation. These features can be attributed to the successful suppression of PF's chain aggregation which profits from the introduction of the bulky hexaazaisowurtzitane core and the design of multi-armed architecture.

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