Surface-Enhanced Raman Spectroscopy Analysis of Human Breast Cancer via Silver Nanoparticles: An Examination of Fabrication Methods

Table 2

Maximum peak positions of Raman bands observed for SERS spectra and the tentative assignments of these bands.

Maximum peak position in SERS spectrum (cm^−1)	Tentative assignment [36]
547	Cholesterol
668, 673	C–S stretching mode of cysteine, T, G (DNA/RNA), C–S stretching mode of cytosine
945	Valine, proline, and polysaccharides
1004	Phenylalanine
1030	Phenylalanine of collagen
1095	Symmetric PO2^− stretching vibration of the DNA backbone; phosphate backbone vibration as a marker mode for the DNA concentration; C–N of proteins
1152	(C–N), proteins
1249	Thymine, adenine, DNA, RNA, phospholipids, Amide III, lipids, fatty acids
1271	Typical phospholipids, Amide III band in proteins, a C–N stretch from alpha helix proteins
1283	Lipids and fatty acids
1340	DNA, RNA
1395	Lipids and fatty acids
1497	Proteins and lipids
1569	Amides, vibrations of C=O, C–N, and N–H groups
1609	Cytosine (NH2)
1745	(C=O), phospholipids, and triglycerides (lipid and fatty acids assignment)