Skip to main content
. 2021 Apr 1;10(7):1405. doi: 10.3390/jcm10071405

Table 2.

μ-RS and FT-IR main peak assignments for PDL samples References [23,28,29,39].

Assignment Mode Peak Position
Raman (cm−1)
Peak Position
FT-IR (cm−1)
0 2 7 14 0 2 7 14
PO2 asymmetric stretching C-O-P stretching 1239
Amide III (β-sheet) 1243 1245 1247 1252
Amide III (random coil) 1258 1265 1266 1273
Amide III (α-helix) 1309 1307 1310 1307
CH2 1450 1455
Amide II 1544
Amide I (310-helix; β-sheet) 1617 1619 1618 1621 1631
Amide I (α-helix) 1642 1643 1641 1642 1650
Amide I (β-turn) 1668 1662 1661 1666 1661
Amide I (β-sheet) 1695 1687 1690 1695 1673
CH2 asymmetric stretching 2875 2926
CH3 symmetric stretching 2930 2873
CH3 asymmetric stretching 2970 2960