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• Liu, J
• Shekhah, O
• Stammer, X
• Arslan, H
• Liu, B
• Schüpbach, B
• Terfort, A
• Wöll, C
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• Liu, J
• Shekhah, O
• Stammer, X
• Arslan, H
• Liu, B
• Schüpbach, B
• Terfort, A
• Wöll, C
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• Liu, J
• Shekhah, O
• Stammer, X
• Arslan, H
• Liu, B
• Schüpbach, B
• Terfort, A
• Wöll, C

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Materials 2012, 5(9), 1581-1592; doi:10.3390/ma5091581

Article

Deposition of Metal-Organic Frameworks by Liquid-Phase Epitaxy: The Influence of Substrate Functional Group Density on Film Orientation

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.

Received: 11 July 2012; in revised form: 27 August 2012 / Accepted: 28 August 2012 / Published: 5 September 2012

(This article belongs to the Special Issue Epitaxial Materials)

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Abstract: 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.

Keywords: HKUST-1; SAMs; MOF thin film

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