Deposition of Metal-Organic Frameworks by Liquid-Phase Epitaxy: The Influence of Substrate Functional Group Density on Film Orientation
by
Jinxuan Liu 1, Osama Shekhah 2, Xia Stammer 1, Hasan K. Arslan 1, Bo Liu 3, Björn Schüpbach 4, Andreas Terfort 4 and Christof Wöll 1,*
Jinxuan Liu 1, Osama Shekhah 2, Xia Stammer 1, Hasan K. Arslan 1, Bo Liu 3, Björn Schüpbach 4, Andreas Terfort 4 and Christof Wöll 1,*
1
Institute of Functional Interfaces, Karlsruhe Institute of Technology, Hermann-von-Helmholty-Platz 1, B 330, Eggenstein-Leopoldshafen D-76344, Germany
2
Advanced Membranes & Porous Materials Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
3
Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
4
Institute of Inorganic and Analytical Chemistry, Goethe-University Frankfurt am Main, Frankfurt 60438, Germany
*
Author to whom correspondence should be addressed.
Materials 2012, 5(9), 1581-1592; https://doi.org/10.3390/ma5091581
Received: 11 July 2012 / Revised: 27 August 2012 / Accepted: 28 August 2012 / Published: 5 September 2012
(This article belongs to the Special Issue Epitaxial Materials)
The liquid phase epitaxy (LPE) of the metal-organic framework (MOF) HKUST-1 has been studied for three different COOH-terminated templating organic surfaces prepared by the adsorption of self-assembled monolayers (SAMs) on gold substrates. Three different SAMs were used, mercaptohexadecanoic acid (MHDA), 4’-carboxyterphenyl-4-methanethiol (TPMTA) and 9-carboxy-10-(mercaptomethyl)triptycene (CMMT). The XRD data demonstrate that highly oriented HKUST-1 SURMOFs with an orientation along the (100) direction was obtained on MHDA-SAMs. In the case of the TPMTA-SAM, the quality of the deposited SURMOF films was found to be substantially inferior. Surprisingly, for the CMMT-SAMs, a different growth direction was obtained; XRD data reveal the deposition of highly oriented HKUST-1 SURMOFs grown along the (111) direction.
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Keywords:
HKUST-1; SAMs; MOF thin film
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MDPI and ACS Style
Liu, J.; Shekhah, O.; Stammer, X.; Arslan, H.K.; Liu, B.; Schüpbach, B.; Terfort, A.; Wöll, C. Deposition of Metal-Organic Frameworks by Liquid-Phase Epitaxy: The Influence of Substrate Functional Group Density on Film Orientation. Materials 2012, 5, 1581-1592.
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