Study on the Electronic States and the Photoinduced Dynamics of Functional Self-Assembled Monolayers

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05389
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Osaka University
• Principal Investigator: Kato Hiroyuki 大阪大学, 理学研究科, 准教授 (80300862)
• Co-Investigator(Kenkyū-buntansha): 宗像 利明 大阪大学, 理学研究科, 教授 (20150873)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 表面物理化学 / 時間分解２光子光電子分光 / 表面・界面物性 / ナノ材料 / 分子デバイス

Outline of Final Research Achievements

In order to realize the molecular electronic devices consisting of a small amount of functionalized molecules, the exact understanding of interactions between molecules and electrodes is of importance. In this study, we first focused on the dynamics of photoexcited electronic states for functionalized self-assembled monolayers (SAMs). The photoexcited processes was measured using time-resolved two-photon photoemission (TR-2PPE) spectroscopy, and then the interactions between the excited functional groups and the metal substrate were quantitatively elucidated as a function of their distance. By the analysis of the experimental results, the dominant decay process was attributed to the excitation energy transfer. In addition, in the search for creating multi-functional molecular layers, we successfully fabricated the self-assembled heterogeneous bilayer systems.

Free Research Field

物理化学