|
| PVK | PHT | PV-PHT | |
| Freq (cm−1) | I | Freq (cm−1) | I | Freq (cm−1) | I | Assignments |
|
| 526.2 | w | — | — | 590 | w | Ring bending |
| 616 | m | — | — | 632.8 | w | Both peaks are for C–H out of plane vibration |
| 718.7 | vs | 720 | w | 728.4 | s | Aromatic structure for the ring deformation |
| 743.9 | vs | — | — | 768.5 | w | Rocking—wagging of methylene in polyvinyl |
| 836.1 | m | 819 | m | 880 | m | Out of plane deformation C–H |
| 920.8 | m | — | — | 937.9 | m | Aromatic out of plane C–H bending + aliphatic C–H rocking |
| 1024.5 | m | — | — | 1023.6 | w | ν(C–S) ring (Thiophene) |
| 1088.2 | s | 1 110 | w | 1089.1 | vs | Stretching vibration (C–H) |
| 1123.2 | m | — | — | 1132 | m | ν(C–N) carbazole |
| — | — | 1218.5 | m | 1180 | m | Stretching vibration (C=S) |
| 1220.4 | m | — | — | 1232.1 | s | In plane deformation (C–H) |
| 1322.1 | m | — | — | 1331.9 | m | C–H bending of vinyl group |
| 1404.2 | m | — | — | 1400.6 | m | Ring vibration of PVK moiety |
| 1451.3 | s | 1450 | s | 1458.4 | s | Symmetric stretching vibration (CC) |
| 1482.1 | s | — | — | 1486.8 | s | Ring vibration of PVK moiety |
| — | — | 1510 | m | — | — | Aromatic (C=C) stretching |
| 1595.8 | m | 1560 | w | 1598.8 | m | Asymmetric deformation δ as(N–H) and ν(C=C) ring in the Thiophene |
| 1624.2 | m | — | — | 1628.3 | w | Asymmetric deformation δ as(N–H) and ν(C=C) ring in the Thiophene |
| 1654.6 | m | — | — | — | — | Asymmetric deformation N–H |
| 1709 | w | — | — | — | — | Symmetric stretching (C=C) of Carbazole |
| 1763.6 | w | 1710 | w | — | — | Symmetric stretching (C=C) of Carbazole |
| 1920.2 | w | — | — | — | — | Stretching vibration υ( C=C=C) of Carbazole group |
| 2853.1 | vw | 2900 | s | 2850 | w | Stretching of (C–N) group, aromatic ring of Carbazole |
| 3022.3 | w | — | — | 2928.6 | w | Symmetric stretching (C–H) of Carbazole group |
| 3044.8 | w | — | — | 2978.1 | m | Symmetric stretching (C–H) of Carbazole group |
| 3435.9 | m | 3400 | w | 3400.3 | m | Symmetric stretching (N–H) of vinylene group |
|