Enhancement of luminescence performance from the alteration of stacking patterns of Pt(ii) dendrimers

Abstract

Four red emission Pt(II) dendrimers, in which the emitting core and dendrons are joined by a flexible alkylene chain, have been designed and synthesized. They exhibit nearly identical emissive wavelength both in photoluminescence in solution and electroluminescence. Improved luminescence performance results from a favourable packing pattern compared with their parents. A maximum current efficiency up to 22.11 cd A⁻¹, the corresponding power efficiency of 12.29 lm W⁻¹ and EQE of 11.70%, have been recorded in a doped and solution-processed OLED.