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Table 4 Assignment of the spectral bands (cm-1) observed for Thy and Thy/GO complex

From: Coherent anti-Stokes Raman scattering enhancement of thymine adsorbed on graphene oxide

RAMAN (λex = 785 nm) spectra CARS spectra Assignment in Thy[3638] and GO[33]
Thy Thy/GO Thy Thy/GO
- - - 3,300 ν (OH) in GO
- - - 3,167 ν (NH); ν (OH) GO
3,065 3,065 - 3,065 ν (C6H)
3,006 3,005 - 2,991 ν (CH3)
2,968 2,967 - 2,963 ν (CH3)
2,989 2,989 2,972 2,989 ν (CH3)
2,936 2,936 2,945 2,930 ν (CH3)
2,892 2,897 2,870 - ν (CH3)
- 2,831 - 2,848 CH, GO
2,739 2,738 2,749 2,753 CH
- 2,626 - - 2D-mode in GO
1,673 1,675 1,660 1,670 ν (C2 = O)
- - 1,655 - ν (C4 = O)
- 1,603 - - G-mode in GO
- - 1,520 1,525 ν ring
1,489 1,490 1,482 1,483 δN1H
1,460 1,459 1,461 1,458 δas (CH3)
1,437 - - 1,436 CH3
1,411 1,410 1,406 1,405 νC2N3, δN1H
1,368 1,368 1,355 1,365 δs (CH3), δ (N3H)
- 1,319 - - D-mode in GO
1,247 1,248 1,247 1,249 ν (ring)
  1. ν, stretching; δ, deformation. All bands are assigned to Thy; the bands assigned to graphene oxide are noted.