Biomedical Engineering Reference
In-Depth Information
Table 8.1 (
Continued
)
Major Characteristic
Peak Frequencies Reported in the Literature
Reference
Number
Peak
Assignment
FT-IR
Raman
1398 cm
−1
C= O symmetric stretch
*
15
CH
2
deformation
*
3
CH
3
symmetric deformation
*
95
1399 cm
−1
Extremely weak peaks of DNA
and RNA; arises mainly from
the vibrational modes of methyl
and methylene groups of
proteins and lipids and amide
groups
*
64
Symmetric CH
3
bending modes
of the methyl groups of proteins
*
66
δ[(CH
3
)] sym.
*
80, 88
δ[C(CH
3
)
2
] symmetric
*
77
1400 cm
−1
Symmetric stretching vibration of
COO
−
group of fatty acids and
amino acids
*
52
δ
s
CH
3
of proteins
*
51
Symmetric bending modes of
methyl groups in skeletal
proteins
*
51
Specific absorption of proteins
*
53
Symmetric stretch of methyl
groups in proteins
*
38
NH in-plane deformation
*
5
Haemoglobin
*
60
1400-30 cm
−1
ν(C= O)O
−
(amino acids aspartic
and glutamic acid)
*
7
1400-50 cm
−1
(CH
3
)
ester
modes: deformations
*
1
1400-500 cm
−1
Ring stretching vibrations mixed
strongly with CH in-plane
bending
*
13
1400/1/2 cm
−1
CH
3
symmetric deformation
*
95
1401 cm
−1
Symmetric CH
3
bending
modes of the methyl groups of
proteins
*
66
δ[(CH
3
)] sym.
*
80, 88
Bending modes of methyl groups
(one of the vibrational modes of
collagen)
*
24
1401/2 cm
−1
Symmetric CH3 bending modes
of the methyl groups of
proteins
*
66
δ[(CH
3
)] sym.
(
Continued
)
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