Fig. 5: Chemical structures and terminal-group redistribution of asymmetric NFAs. | Nature Communications

Fig. 5: Chemical structures and terminal-group redistribution of asymmetric NFAs.

From: Chemoselective synthesis of fluoroacetonitrile-containing terminal groups for stable non-fullerene acceptors

Fig. 5

a Chemical structures of E-IFC-IC-Cl and Z-IFC-IC-Cl. b Schematic diagram of terminal-group redistribution (TR). A1 and A2 represent heterogeneous electron-deficient terminal groups, D represents electron-rich core. 19F NMR spectra of c E-IFC-IC-Cl and d Z-IFC-IC-Cl fresh (0 h) and aged (48 h) solutions in CDCl3. e 19F NMR spectra of PM6:E-IFC-IC-Cl and PM6:Z-IFC-IC-Cl blend films after 14 days storage.

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