Hyung Suk
2026년 7월 16일
Exploring TADF Electronic Structures at the Single-Molecule Level
MAXAM Lab was pleased to welcome Dr. Jaehyun Bae from the Center for Quantum Conversion Research at the Institute for Basic Science (IBS QCR).
Dr. Bae specializes in the investigation of organic functional molecules at the single-molecule level using low-temperature scanning tunneling microscopy and spectroscopy (STM/STS). His research provides spatially resolved insight into molecular electronic structures, with particular emphasis on understanding the frontier electronic states of thermally activated delayed fluorescence (TADF) and multiple-resonance TADF molecules.
Prof. Kim and Dr. Bae previously collaborated on the ACS Nano publication, “Visualization of Multiple-Resonance-Induced Frontier Molecular Orbitals in a Single Multiple-Resonance Thermally Activated Delayed Fluorescence Molecule.”
In this work, STM/STS and spatially resolved dI/dV mapping were employed to directly visualize the HOMO- and LUMO-related electronic states of an individual DABNA-1 molecule, providing real-space insight into the characteristic frontier molecular orbital distributions induced by its multiple-resonance framework.
During his visit, Dr. Bae and members of MAXAM Lab exchanged perspectives on the relationship between molecular-scale electronic structure and the photophysical properties of organic optoelectronic materials.
Discussions also explored how single-molecule spectroscopy, electronic-structure calculations, excited-state photophysics, and OLED device studies can be integrated to establish a more comprehensive understanding of TADF materials across different length scales.
The visit further strengthened the ongoing collaboration between Dr. Bae and Prof. Kim and provided an opportunity to discuss future research connecting atomically resolved electronic structures with the rational design of next-generation organic light-emitting materials and devices.