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
3015/17/20 cm
−1
CH
2'
aromatic stretch
*
*
6
3021/2 cm
−1
C-H ring
*
48
3050 cm
−1
Amide B (N-H stretching)
*
65
3064 cm
−1
C
2
C
-H
2
aromatic stretching
*
6
3070 cm
−1
Fermi-enhanced overtone of the
amide II band (at 1550 cm
−1
)
*
83
3072/4 cm
−1
C-H ring
*
48
3074 cm
−1
CH stretching band of the phenyl
rings
*
6
C
2
C
-H
2
aromatic stretching
*
6
3075 cm
−1
Amide B bands stemming from
N-H stretching modes in
proteins and nucleic acids
*
48
3078 cm
−1
C-H ring
*
48
3082 cm
−1
C
2
C
-H
2
aromatic stretching
*
6
3111/4/6 cm
−1
C-H ring
*
48
3163/82 cm
−1
Stretching N-H symmetric
*
48
3190 cm
−1
N-H stretching bands of mainly
cis
-ordered substructures
*
83
3194/5/7/9/200
cm
−1
Stretching N-H symmetric
*
48
3200-550 cm
−1
Symmetric and asymmetric
vibrations attributed to water,
so it would be better not to
consider this region for detailed
analysis.
*
62
Ring OH stretching modes
*
1
3201 cm
−1
Stretching N-H symmetric
*
48
3216/17/26 cm
−1
Stretching O-H symmetric
*
48
3232 cm
−1
O-H & N-H stretching vibrations
(hydrogen bonding network
may vary in the malignant
tissues)
*
83
3269 cm
−1
OH
*
1
3273/87/89 cm
−1
Stretching O-H symmetric
*
48
3293 cm
−1
OH stretching (associated)
*
6
3295 cm
−1
Amide A (N-H stretching)
*
65
3300 cm
−1
Amide A bands stemming from
N-H stretching modes in
proteins and nucleic acids
*
83
Attributed to OH stretch
*
2
3301 cm
−1
Amide A band
*
77
(
Continued
)
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