D–π*–A type planar chiral TADF materials for efficient circularly polarized electroluminescence

Abstract

Planar chiral organic fluorescent materials that exhibit high chiral stability, high efficiency and circularly polarized luminescence (CPL) concurrently remain an unresolved issue despite their promising applications in optical encryption and...

Advances in circularly polarized electroluminescence based on chiral TADF-active materials

“…10) by introducing phenoxazine and triazine into [2.2]paracyclophane to produce intrinsic planar chirality. 51 The enantiomers displayed not only excellent TADF and CPL activities, but also a stable chiral configuration without racemization. These properties endowed the enantiomers with the ability to achieve highly efficient vacuum-deposited CP-OLEDs.…”

The preparation and properties of circularly polarized luminescent liquid crystal physical gels with self-supporting performance

“…In recent years, circularly polarized luminescent (CPL) materials have attracted great attention and become a new research hotspot in the field of chiral luminescent materials. [1][2][3][4][5] Circularly polarized luminescence refers to the property that chiral luminescence systems can emit left-handed CPL and righthanded CPL with different intensities after excitation. Due to unique optical properties, CPL materials have a widespread application prospect in asymmetric syntheses, 6,7 chemical sensors, 8 chemical probes, 9 3D displays 10 and other fields.…”

Amplification of dissymmetry factors by dihedral angle engineering in donor–acceptor type circularly polarized luminescence materials

“…Introducing chiral units into classical D-A type TADF materials is an effective strategy to construct emitters for CP-OLED applications. [30][31][32][33][34][35][36][37][38][39][40][41][42] Nevertheless, the g lum values of D-A type CPL materials are generally low (in the range of 10 À3 to 10 À5 ). [43][44][45][46][47][48][49][50][51][52][53][54] Besides, the lack of understanding of the impact of structural variations on the g lum of D-A type CPL materials limits the rational improvement of g lum .…”