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Enhanced Structural Organization in Covalent Organic Frameworks Through Fluorination
Author(s) -
Alahakoon Sampath B.,
McCandless Gregory T.,
Karunathilake Arosha A. K.,
Thompson Christina M.,
Smaldone Ronald A.
Publication year - 2017
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.201700412
Subject(s) - covalent bond , imine , crystallinity , monomer , fluorine , covalent organic framework , chemistry , polymer chemistry , materials science , chemical engineering , organic chemistry , polymer , crystallography , catalysis , engineering
Here, we report a structure–function study of imine covalent organic frameworks (COFs) comparing a series of novel fluorine‐containing monomers to their non‐fluorinated analogues. We found that the fluorine‐containing monomers produced 2D‐COFs with not only greatly improved surface areas (over 2000 m 2 g −1 compared to 760 m 2 g −1 for the non‐fluorinated analogue), but also with improved crystallinity and larger, more defined pore diameters. We then studied the formation of these COFs under varying reaction times and temperatures to obtain a greater insight into their mechanism of formation.