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Concentration‐Dependent Seeding as a Strategy for Fabrication of Densely Packed Surface‐Mounted Metal–Organic Frameworks (SURMOF) Layers
Author(s) -
Li Qiang,
Gies Joshua,
Yu XiuJun,
Gu Yu,
Terfort Andreas,
Kind Martin
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202000594
Subject(s) - dabco , quartz crystal microbalance , nucleation , crystallite , materials science , metal organic framework , surface modification , chemical engineering , nanotechnology , seeding , reagent , octane , layer (electronics) , quartz , metal , chemistry , organic chemistry , composite material , metallurgy , adsorption , engineering , aerospace engineering
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.