Chiral supramolecular electronics for high‐efficiency circularly polarized organic light‐emitting diodes

Abstract The integration of chirality into organic semiconductors has long been pursued due to its potential to facilitate circularly polarized light emission, with significant implications for advanced displays, quantum information processing, and spintronics. However, the simultaneous attainment of a high dissymmetry factor and elevated efficiency in circularly polarized organic light‐emitting diodes presents a fundamental challenge. In the recent work, Chowdhury et al. introduce a paradigm‐shifting approach through the supramolecular engineering of chiral electronic structures ( Science , 2025, 387, 1175–1181). This was achieved through in situ chiral crystallization of triazatruxene derivatives, driven by thermally activated nanophase segregation in vacuum‐deposited thin films. The resulting films deliver notable electroluminescence (EL), characterized by a high EL dissymmetry factor ( g EL ≈ 0.12) and an external quantum efficiency ( EQE ≈ 16%). This research establishes a novel platform for chiral optoelectronics by generating band‐level chirality through effective supramolecular organization.