Premium
MOF‐on‐MOF: Oriented Growth of Multiple Layered Thin Films of Metal–Organic Frameworks
Author(s) -
Ikigaki Ken,
Okada Kenji,
Tokudome Yasuaki,
Toyao Takashi,
Falcaro Paolo,
Doonan Christian J.,
Takahashi Masahide
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201901707
Subject(s) - metal organic framework , materials science , epitaxy , layer (electronics) , porosity , chemical engineering , thin film , nanotechnology , mesoporous material , chemistry , catalysis , organic chemistry , composite material , adsorption , engineering
The precise alignment of multiple layers of metal–organic framework (MOF) thin films, or MOF‐on‐MOF films, over macroscopic length scales is presented. The MOF‐on‐MOF films are fabricated by epitaxially matching the interface. The first MOF layer (Cu 2 (BPDC) 2 , BPDC=biphenyl‐4,4′‐dicarboxylate) is grown on an oriented Cu(OH) 2 film by a “one‐pot” approach. Aligned second (Cu 2 (BDC) 2 , BDC=benzene 1,4‐dicarboxylate, or Cu 2 (BPYDC) 2 , BPYDC=2,2′‐bipyridine‐5,5′‐dicarboxylate) MOF layers can be deposited using liquid‐phase epitaxy. The co‐orientation of the MOF films is confirmed by X‐ray diffraction. Importantly, our strategy allows for the synthesis of aligned MOF films, for example, Cu 2 (BPYDC) 2 , that cannot be grown on a Cu(OH) 2 surface. We show that aligned MOF films furnished with Ag nanoparticles show a unique anisotropic plasmon resonance. Our MOF‐on‐MOF approach expands the chemistry of heteroepitaxially oriented MOF films and provides a new toolbox for multifunctional porous coatings.