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Table 1
Infrared and Raman band list.
| Position | Mode | |
| (cm-1) | IR | Raman |
|
|
||
| 3600–3000 | OH/NH stretch (br) | |
| 3050 | CH aro. stretch | |
| 2960 | CH3 asym. stretch | |
| 2920 | CH2 asym. stretch | |
| 2870 | CH3 sym. stretch | |
| 2860 | CH2 sym. stretch | |
| 2220 | C≡N | C≡N |
| 1750–1650 | C=O | |
| 1600–1580 | C=C/C=N | C sp2 |
| 1475 | CH2,3 deformation | |
| 1400–1100 | C-N/C-C (br) | |
| 1375 | CH2,3 deformation | |
| 1370–1340 | C sp2 “Defect” band | |
| 1100–800 | SiO stretch (Silicates, br) | |
Notes. br: broad.
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