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1H NMR spectral data of PPHF–I terpolymer.
| Nature of the Assigned in the spectrum | Expected chemical shift(δ) ppm | Observed chemical shift (δ) ppm |
|---|---|---|
| Aromatic Proton (Ar–H) | 6.5–8.0 | 6.6–7.6 |
| Protons of –NH bridge | 8.5–10.5 | 10.4 |
| Methylene (-CH2) group | 1.0–2.6 | 2.5 |
| Ar-N-CH2 | 4.5–6.0 | 4.8 |
