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

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 (M...

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Published inMaterials Vol. 5; no. 9; pp. 1581 - 1592
Main Authors Liu, Jinxuan, Shekhah, Osama, Stammer, Xia, Arslan, Hasan K., Liu, Bo, Schüpbach, Björn, Terfort, Andreas, Wöll, Christof
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 05.09.2012
MDPI
Subjects
Acids
Electronic mail systems
HKUST-1
Hydrocarbons
MOF thin film
Porous materials
SAMs
Thin films
Germany
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Summary: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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma5091581