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
Mainly from absorption bands of
the phosphodiester group of
nucleic acids and membrane
phospholipids, and partially
protein (amide III).
*
78
Amide III
PO
2
−
asymmetric vibrations of
nucleic acids when it is
nonhydrogen-bonded
ν
as
PO
2
−
*
78
Collagen
*
64
Asymmetric phosphodiester
stretching band
Amide III
*
65
PO
2
−
ionized asymmetric
stretching
*
40
ν(PO
2
−
) asymmetric stretching of
phosphodiesters
*
40
Composed of amide III mode of
collagen protein and the
asymmetric stretching mode of
the phosphodiester groups of
nucleic acids
*
66
62, 77
Asymmetric stretching mode of
phosphodiester groups of
nucleic acids
*
38, 66, 67,
70
Collagen
*
51
Antisymmetric stretching
vibrations of the PO
2
group
*
51
*
69
*
47
1240-45 cm
−1
Phosphate I (stretching PO
2
−
symmetric vibration) in
A
-form
RNA
*
23
1240-65 cm
−1
Amide III(C-N stretching mode
of proteins, indicating mainly
α-helix conformation)
*
9, 83
1240-310 cm
−1
νC-N, amide III
*
76
1241 cm
−1
PO
2
−
asymmetric (phosphate I)
*
48
Phosphate band
*
79
Search WWH ::
Custom Search