Table 3.
FTIR Analysis of JLE and S4-GoNPs
| Extract Name | Peaks | Functional Groups Range | Vibrational Clusters |
|---|---|---|---|
| JLE | 3346.37 cm−1 | Hydrogen bonded 3500–3200 cm-1 | O–H stretching, H-bond |
| 1713.94 cm−1 | The carbonyl stretch C=O of a carboxylic acid appears as an intense band from 1760–1690 cm-1. | C=O stretch | |
| 1603.52 cm−1 | From 1650–1580 cm-1, amines | N–H bend of primary amines | |
| 1441.05 cm−1 | From 1450–1375 cm-1, alkenes, methyl group | C–H bend of alkanes | |
| 1363.91 cm−1 | C–H rock, methyl from 1370–1350 cm-1 | C–H bend of alkanes | |
| 1176.85 cm−1 | From 1205–1124 cm-1, tertiary alcohol | C-O stretch of tertiary alcohol | |
| 1039.93 cm−1 | CO-O-CO stretching anhydride | C–N stretch of aliphatic amines | |
| S4-GoNPs | 3332.91 cm−1 | Hydrogen bonded 3500–3200 cm-1 | O–H stretching, H-bond of alcohols and phenols |
| 2110.71 cm−1 | From 2260–2100 cm-1, alkynes | –C≡C– stretch of alkynes | |
| 1639.75 cm−1 | Carbonyl(C=O) stretching vibrations typically seen between 1800 and 1600cm-1 | C=O stretch of carbonyls (general) | |
| 664.84 cm−1 | C–X stretch 690–515 cm-1 of Alkyl halides (Alkyl halides are compounds that have a C–X bond, where X is a halogen: bromine, chlorine, fluorene, or iodine.) | C–X stretch of alkyl halides | |
| 599.47 cm−1 | |||
| 553.94 cm−1 |