Table 2 FTIR absorption peaks in the spectra of LT and their assignments

3058

C–H asym. stretching (aliphatic)

2922

CH₂ sym stretching

1734

C=C stretching

1598

NH₂ scissoring

1556

C–C–C stretching

1475

C–H in plane bending in ring

1438

CH₂ scissoring

1475

C–H in plane bending in ring

1330

Combination of C–C–C stretching and Phenolic OH

1235

Phenolic OH stretch with ring carbon

1104

C–N stretching

1041

C–H in plane bending

820

NH₂ wagging