Fig. 3: Formation process of COF-LZU1 films. | Nature Communications

Fig. 3: Formation process of COF-LZU1 films.

From: Construction of functional covalent organic framework films by modulator and solvent induced polymerization

Fig. 3

a Binding energy between reacted molecules. b Selection of modulators. SEM images of synthesizing COF-LZU1 films with (i) citric acid and (ii) p-toluenesulfonic acid. c SEM images of COF-LZU1 film in (i) closed condition and (ii) open condition. Insert is the digital image of COF-LZU1 film in the (i) closed condition and (ii) open condition. d FTIR spectra of COF-LZU1 films at different reaction time. e XRD patterns of COF-LZU1 films at different time. f Schematic representation of the COF films formation mechanism.

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