期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 23, 页码 5185-5189出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202000594
关键词
layer-by-layer (LbL); metal-organic frameworks; surface chemistry; surface-mounted metal-organic frameworks (SURMOFs); Volmer-Weber growth
资金
- China Scholarship Council Funding Source: Medline
- Deutsche Forschungsgemeinschaft [KI 2102/1-1] Funding Source: Medline
The layer-by-layer (LbL) method is a well-established method for the growth of surface-attached metal-organic frameworks (SURMOFs). Various experimental parameters, such as surface functionalization or temperature, have been identified as essential in the past. In this study, inspired by these recent insights regarding the LbL SURMOF growth mechanism, the impact of reactant solutions concentration on LbL growth of the Cu-2(F(4)bdc)(2)(dabco) SURMOF (F(4)bdc(2-)=tetrafluorobenzene-1,4-dicarboxylate and dabco=1,4-diazabicyclo-[2.2.2]octane) in situ by using quartz-crystal microbalance and ex situ with a combination of spectroscopic, diffraction and microscopy techniques was investigated. It was found that number, size, and morphology of MOF crystallites are strongly influenced by the reagent concentration. By adjusting the interplay of nucleation and growth, we were able to produce densely packed, yet thin films, which are highly desired for a variety of SURMOF applications.
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