Presentation Information
[2P06]Tracing the energy level alignment of the redox-active electrode throughout the electrochemical reactions
*Takahide Miyamoto1,2, Yasuyuki Yokota2, Takuo Ohkochi2,3,4, Tomoaki Nishino1, Yousoo Kim2,5,6 (1. School of Science, Institute of Science Tokyo, 2. RIKEN, 3. Laboratory of Advanced Science and Technology for Industry, University of Hyogo, 4. Japan Synchrotron Radiation Research Institute, 5. Institute of Basic Science, 6. School of Engineering, The University of Tokyo)
Since the electron transfer between the redox molecules and the electrode occurs in electrochemical reactions, a precise understanding and control of the HOMO/LUMO level relative to the Fermi level of the electrode is important. However, it is not easy to obtain information from the conventional current-voltage curve measurements. Recently, we showed that the electronic states of the ferrocene-terminated self-assembled monolayer, includeing HOMO level, can be investigated using photoelectron spectroscopy after the emersion of the electrodes from the electrolyte solution and the transfer into vacuum. In this study, the X-ray absorption fine structure spectroscopy and photoelectron spectroscopy were performed to trace the energy levels of the occupied and unoccupied states in the electrochemical reaction.