In-situ ultra-low frequency spectroscopy at electrode surfaces

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05372
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: Ikeda Katsuyoshi 名古屋工業大学, 工学(系)研究科(研究院), 教授 (50321899)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: テラヘルツ領域 / プラズモン / その場観察 / 電気化学 / 有機単分子層

Outline of Final Research Achievements

It is believed that relatively weak interactions such as electrode/molecule interactions, intermolecular interactions, and hydrogen bonding play important roles in electrochemical reactions. If surface sensitive vibrational spectroscopy is conducted in so-called terahertz frequency region, we can obtain such information, which helps our understanding of the reaction mechanisms. In this project, we extended the detectable range of surface enhanced Raman scattering (SERS) spectroscopy and observed metal surfaces under electrochemical conditions. We successfully observed large amplitude bending motions of molecular adsorbates. We also applied this technique to single crystalline gold surfaces and demonstrated that this ultra-low frequency SERS spectroscopy was indeed sensitive to atomic surface structures.

Free Research Field

光物理化学