The First Single Polymer with Simultaneous Blue, Green, and Red Emission for White Electroluminescence

Abstract

A light-emitting polymer with simultaneous blue (λmax = 445 nm), green (λmax = 515 nm), and red light (λmax = 624 nm) emission for bias-independent white electroluminescence is reported (see Figure). The polymer is synthesized by covalently attaching a green-light-emissive and a red-light-emissive chromophore to a macromolecule with blue-light emission. White-light color coordinates of (0.31, 0.34) and a luminance efficiency of 1.59 cd A–1 are obtained.