The Yoon Group at KU

Temperature differences can generate electrical signals in systems ranging from molecules to supramolecular assemblies and living systems. We combine molecular design with new measurement methods to investigate how molecular structure, interfaces, and electron and ion transport govern these responses, seeking to uncover the underlying physical and chemical principles. Chemical reactions can be driven by various stimuli, including heat, light, electricity, or mechanical force. Does the way we drive a reaction change how it proceeds, and what happens when different stimuli act together? We combine molecular design with experiments that reveal how reactions occur, seeking to understand how different modes of activation open new reaction pathways. High-energy light can eject electrons from molecules, initiating a cascade of secondary electrons that drive chemical reactions. We investigate how the structure of metal complexes governs secondary-electron generation and the reactions these electrons induce, focusing on the underlying mechanisms. Understanding these relationships can reveal molecular design principles for overcoming limitations in resist sensitivity and pattern fidelity, helping advance nanoscale patterning in semiconductor manufacturing.