Fig. 5

Chemical shift changes of hydroxyl groups and fluorine atoms in 1,3-Bis-HFAB. a observed in the NMR spectra of 1,3-Bis-HFAB with Glu-NCA, DMEA-TMS’, DMEA, and MAP, respectively; b observed in ¹⁹F NMR spectra (the comparative spectra see supplementary Figs. 2–5 and 8) (Source data are provided as a Source Data file)