Data-Driven Design Guidelines for TADF Emitters from a High-Throughput Screening of 747 Molecules.

TADF emitter performance depends on both thermodynamic and kinetic factors. We analyzed 747 experimentally known TADF molecules computationally to extract quantitative design guidelines. Using a validated xTB-based workflow, we examine how architecture, geometry, and electronic structure affect the photophysical properties. Among architectures, D-A-D frameworks achieve the smallest ΔEST. A favorable torsional angle of 50°-90° balances small ΔEST with the spin-orbit coupling needed for reverse intersystem crossing. Clustering separates high-performance candidates and highlights multiresonance emitters for blue emission. From these results, we identify 127 candidates with predicted ΔEST < 0.1 eV and oscillator strength f > 0.1. These HTVS-derived design guidelines and candidates can guide future TADF emitter development.