Solution process for organic-inorganic epitaxial interface toward oriented framework compound films with unique properties
by
Kenji Okada
Department of Materials Science, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531 Japan
Precise control of material interfaces, particularly lattice matching, is crucial for fabricating oriented thin films with sophisticated functionalities. In the field of inorganic materials, epitaxial growth via lattice matching has been extensively investigated, contributing significantly to the development of semiconductor devices. Our research group has been reporting on a unique organic-inorganic epitaxial interface on metal hydroxides, which enables the fabrication of oriented metal organic framework (MOF) films via a solution process.
We have found that crystalline metal hydroxides possess a regular arrangement of hydroxyl groups (M-OH units) on their surface. This ordered array of hydroxyl groups dictates the alignment of organic molecules on the surface, allowing us to create oriented MOF films. Because the MOF micropores in these films are aligned in specific directions on a macroscopic scale, thin films with anisotropic properties can be achieved through a host-guest approach. By accommodating functional guests such as molecules, ions, or nano-objects – into the pores, we can create advanced electronic, optical, and thermal devices. For example, our oriented MOF films impregnated with fluorescent molecules have demonstrated polarization-dependent optical responses.
In this presentation, I will review our recent progress on the solution process for fabricating oriented MOF films and their applications, highlighting their unique optical, electrical, and thermal properties.
It is our pleasure to invite you to join the ISGS eSeminar for September 2025, which will be delivered by Associate Professor Kenji Okada on Tuesday 30 September. Kenji joins us from Osaka Metropolitan University’s Laboratory of Materials Science and Nanotechnology in Japan, where his research focuses on metal hydroxides, oriented growth, porous materials and 1D-nanomaterials. Please click here and here to learn more about his research and career journey to date.
Date: Tuesday 30 September 2025
Format:
- ZOOM (eSeminar link), Meeting ID: 886 758 1791
- Passcode: 1jDKEJ
Time:
- 08:00 – USA (East Coast)
- 09:00 – Brazil (São Paulo) and Argentina
- 12:00 – UTC
- 13:00 – UK, Portugal
- 14:00 – France, Central Europe, Sweden
- 15:00 – Romania, Israel, Eastern Europe, Ukraine
- 15:00 – Russia (Moscow, St Petersburg)
- 20:00 – China, Singapore, Malaysia
- 21:00 – Japan, Korea
- 23:00 – Australia (Queensland)
