Fine structure determination of nanoparticles embedded in surface mounted metal organic framework thin films

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K05509
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 34010:Inorganic/coordination chemistry-related
• Research Institution: International Christian University
• Principal Investigator: Chun Wang-Jae 国際基督教大学, 教養学部, 教授 (40344501)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 多孔性配位高分子 / 配位制御多孔性配位高分子薄膜 / X線吸収微細構造 / 金属ナノ粒子 / 単結晶酸化物表面

Outline of Final Research Achievements

In this project, the PI has conducted to find fundamental knowledge to advance further porous coordination polymers (PCP/MOFs), which exhibit molecular adsorption/separation and molecular recognition through coordination bonds between metal ions and organic molecules by having high structural regularity and link these polymers to various nanoscale devices.
Specifically, instead of powder PCP/MOFs, which have a wide variety of particle sizes and growth orientations, the research focused on synthesizing a growth orientation-controlled PCP/MOFs thin films (SURMOFs) and the immobilization of metal nanoparticles in SURMOFs’ pores. Furthermore, the research has established a low-temperature polarization-dependent total-reflection fluorescence XAFS method that can systematically obtain direct chemical structural information (coordination numbers, bonding distances, electronic states, etc.) on the structure of metal nanoparticles in SURMOFs.

Free Research Field

触媒表面化学

Academic Significance and Societal Importance of the Research Achievements

本研究で得れた配向制御PCP/MOFs薄膜(SURMOFs)の合成やナノ粒子固定化に関する研究成果はPCP/MOFsのナノスケールデバイス化における基礎的知見として活かせる。また、サブナノ～ナノスケールの粒子に関する精密で、かつ系統的な構造情報（配位数、結合距離、電子状態など）はPCP/MOFsの高機能化に欠かせない設計指針に繋がる。このように本研究で得られた基礎的知見は、学術的な意義だけでなく、ナノスケールデバイスへの基礎的設計指針を与えることから大きな社会的意義をもつ。