Fig. 1: Structural characterization of double bond-modified P(VDF-TrFE).
From: Scalable solution-processed ferroelectric polymers exhibiting markedly enhanced piezoelectricity
a The Scheme for the formation of C=C double bond in fluoropolymers. b FTIR spectra where the IR band characteristic of C=C is indicated at 1650 cm-1. c C-spectrum XPS. d 1H NMR spectra. e XRD patterns of double bond-modified P(VDF-TrFE), where the dashed arrows show the trend of all-trans and 3/1-helix changes with increasing NaOH dosage. f FTIR spectra of NaOH-modified P(VDF-TrFE), where the absorption peaks at 1285 cm-1 and 510 cm-1 corresponding to the all-trans and 3/1-helix conformation.
