TY - JOUR
T1 - Chemically Gradient Hydrogen-Bonded Organic Framework Crystal Film
AU - Mohammed, Abdul Khayum
AU - Raya, Jésus
AU - Pandikassala, Ajmal
AU - Addicoat, Matthew A.
AU - Gaber, Safa
AU - Aslam, Mohamed
AU - Ali, Liaqat
AU - Kurungot, Sreekumar
AU - Shetty, Dinesh
N1 - Publisher Copyright:
© 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
PY - 2023/7/17
Y1 - 2023/7/17
N2 - Hydrogen-bonded organic frameworks (HOFs) are ordered supramolecular solid structures, however, nothing much explored as centimetre-scale self-standing films. The fabrication of such crystals comprising self-supported films is challenging due to the limited flexibility and interaction of the crystals, and therefore studies on two-dimensional macrostructures of HOFs are limited to external supports. Herein, we introduce a novel chemical gradient strategy to fabricate a crystal-deposited HOF film on an in situ-formed covalent organic polymer film (Tam-Bdca-CGHOF). The fabricated film showed versatility in chemical bonding along its thickness from covalent to hydrogen-bonded network. The kinetic-controlled Tam-Bdca-CGHOF showed enhanced proton conductivity (8.3×10−5 S cm−1) compared to its rapid kinetic analogue, Tam-Bdca-COP (2.1×10−5 S cm−1), which signifies the advantage of bonding-engineering in the same system.
AB - Hydrogen-bonded organic frameworks (HOFs) are ordered supramolecular solid structures, however, nothing much explored as centimetre-scale self-standing films. The fabrication of such crystals comprising self-supported films is challenging due to the limited flexibility and interaction of the crystals, and therefore studies on two-dimensional macrostructures of HOFs are limited to external supports. Herein, we introduce a novel chemical gradient strategy to fabricate a crystal-deposited HOF film on an in situ-formed covalent organic polymer film (Tam-Bdca-CGHOF). The fabricated film showed versatility in chemical bonding along its thickness from covalent to hydrogen-bonded network. The kinetic-controlled Tam-Bdca-CGHOF showed enhanced proton conductivity (8.3×10−5 S cm−1) compared to its rapid kinetic analogue, Tam-Bdca-COP (2.1×10−5 S cm−1), which signifies the advantage of bonding-engineering in the same system.
KW - Chemical Gradience
KW - Crystal Films
KW - Free-Standing Films
KW - Hydrogen-Bonded Organic Framework
KW - Interfacial Chemistry
KW - Proton Conductivity
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U2 - 10.1002/anie.202304313
DO - 10.1002/anie.202304313
M3 - Article
C2 - 37212616
AN - SCOPUS:85161418837
SN - 1433-7851
VL - 62
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 29
M1 - e202304313
ER -