Xiankai Chen

Group Theory-Guided Orbital Symmetry Engineering of cis -Quinacridone: From Symmetry-Forbidden to Dipole-Allowed Transitions for Efficient Narrowband Emissions

Abstract Although group theory is widely used to analyze symmetry and electronic transition selection rules in condensed matter physics and coordination chemistry, its use as a predictive design tool for organic light-emitting diodes (OLEDs) remains largely unexplored. This is pa...

Data-Driven and Quantum-Chemical Insights into Emergence of Multiresonance Effect in Thermally Activated Delayed Fluorescence Emitters

Abstract Multiresonance thermally activated delayed fluorescence (MR-TADF) emitters enable narrow-bandwidth emission and high efficiency in organic light-emitting diodes; however, the fundamental origin of the multiresonance effect remains incompletely understood. Herein, a fine-...

Triboron Multiresonant Emitter With Zigzag B/N Alignment Enables Near‐Degenerate Singlet–Triplet States for High‐Performance Non‐Sensitized OLEDs With Mild Roll‐Off

ABSTRACT Boron/nitrogen‐embedded polycyclic frameworks are attractive emitters in organic light‐emitting diodes (OLEDs) because they combine narrowband emission with thermally activated delayed fluorescence. Linear extension of multiresonant frameworks with zigzag boron/nitrogen...