FTIR and Raman Characteristic Peak Frequencies in Biological Studies - Vibrational Spectroscopy for Tissue Analysis - page 268

Table 8.1 ( Continued )
Major Characteristic Peak Frequencies Reported in the Literature

Reference
Number Peak Assignment FT-IR Raman

1527 cm −1 Stretching C= N, C= C * 48

1528 cm −1 C= N guanine * 48

Carotenoid (absent in normal
tissues)

* 45

152829/30 cm −1 C= N adenine, cytosine * 23

1530 cm −1 Stretching C= N, C= C * 48

1531 cm −1 Modified guanine? * 48

1532 cm −1 Stretching C= N, C= C * 48

1534 cm −1 Modified guanine? * 48

Amide II * 77

1535/7 cm −1 Stretching C= N, C= C * 48

1540 cm −1 Protein amide II absorption;

predominately β-sheet of
amide II

* 83

Amide II * 77

1540-650 cm −1 Amide II * 55

1540-680 cm −1 Amide carbonyl group vibrations

and aromatic hydrogens

* 84

1541 cm −1 Amide II absorption (primarily

an N-H bending coupled to a
C-N stretching vibrational
mode)

* 38, 52

Amide II * 50

1543 cm −1 Amide II * 76

ν 11 (C β C β ), observed in the spectra
of single human RBC

* 22

1544 cm −1 Amide II * 24

Amide II bands (arises from C-N
stretching and CHN bending
vibrations)

* 52, 62

1545 cm −1 Protein band * 71

Amide II (δN-H, νC-N) * 65

Peptide amide II * 53, 100

C 6 -H deformation mode * 5

1546 cm −1 Bound and free NADH * 54

1548 cm −1 Tryptophan * 9, 10

1549 cm −1 Amide II * 77

Amide II of proteins * 51

1550 cm −1 Amide II * 74

Amide II of proteins * 78

N-H bending and C-N
stretching

* 101