New Horizon in Materials and Photonics Research from Scientific Excellence to Industrial Impact
발표 구분
초청강연
제목
Visualizing and Controlling Molecular Function by Atomic-Scale Spectroscopy: From Single-Molecule Insight to Materials Innovation
발표자
김유수 (광주과학기술원)
연구책임자
김유수 (광주과학기술원)
초록
내용
Understanding and controlling molecular structure–function relationships at the single-molecule level is essential for designing advanced functional materials. Nanospectroscopy based on the scanning tunneling microscope (STM) accesses electronic and vibrational states with atomic resolution, revealing the origins of optical and electronic functions. We developed an integrated approach combining STM with tip-enhanced Raman spectroscopy, single-molecule photoluminescence, and ultrafast THz-pulse-driven exciton dynamics. These methods allow precise spatial and temporal control of molecular charge and reactivity. Using this platform, we clarified mechanisms of on-surface synthesis, including selective bond formation, C–C coupling vs. C–H activation, and polymerization vs. cyclization. Reaction pathways were steered by chemisorption direction and oxygen species. Our methodologies offer a spectroscopic platform beyond conventional techniques, with implications for molecular photonics and polymer design.