Phospholipid — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Phospholipid tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 320,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
Phospholipid is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.
Characteristic FTIR peaks for Phospholipid
| Wavenumber (cm⁻¹) | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| 1741 | 3 | 2 | 1.0 |
| 1240 | 2 | 2 | 1.0 |
| 1080 | 2 | 2 | 1.0 |
| 1744 | 2 | 2 | 1.0 |
| 1035 | 2 | 2 | 1.0 |
| 1400 | 2 | 2 | 1.0 |
| 1079 | 2 | 1 | 1.0 |
| 442 | 1 | 1 | 1.0 |
| 1456 | 1 | 1 | 1.0 |
| 1337 | 1 | 1 | 1.0 |
| 1401 | 1 | 1 | 1.0 |
| 1235 | 1 | 1 | 1.0 |
| 1730 | 1 | 1 | 1.0 |
| 1738 | 1 | 1 | 1.0 |
| 2871 | 1 | 1 | 1.0 |
| 1090 | 1 | 1 | 1.0 |
| 1247 | 1 | 1 | 1.0 |
| 1237 | 1 | 1 | 1.0 |
| 966 | 1 | 1 | 1.0 |
| 995 | 1 | 1 | 1.0 |
| 1733 | 1 | 1 | 1.0 |
| 1300 | 1 | 1 | 1.0 |
| 1085 | 1 | 1 | 1.0 |
| 1339 | 1 | 1 | 1.0 |
| 1174 | 1 | 1 | 1.0 |
| 1462 | 1 | 1 | 1.0 |
| 2008 | 1 | 1 | 1.0 |
| 2960 | 1 | 1 | 1.0 |
| 1740 | 1 | 1 | 1.0 |
| 1241 | 1 | 1 | 1.0 |
Showing the 30 best-supported peaks of 50 total for Phospholipid.
Spectrum logic
A functional-group assignment becomes more confident when several expected bands appear together. Use this page to find the strongest-supported peaks, then confirm that the same sample exhibits a coherent pattern rather than a single isolated hit.
Real-world usage
These pages are useful for unknown material analysis, peak explanation in reports, polymer troubleshooting, and verifying whether a candidate material family is chemically plausible.
Common mistakes
- Using one functional-group page as a complete material verdict without checking the rest of the spectrum.
- Assuming the strongest band is always the most diagnostic one.
- Forgetting that processing, additives, aging, and mixtures can shift or broaden expected peaks.
Verification advice
Use DSC, GC-MS, or TGA when several material families share similar bands or when mixture effects make the FTIR assignment uncertain.
Literature behind these assignments
-
2851 cm⁻¹ confidence 1.0
“the region 3000 cm-1 and 1740 cm-1 were related to CH2 symmetric stretching Also, the wavenumbers 2851 cm-1 peak was correlated to and C=O stretching (phospholipids) respectively.”
The Effect of High-Intensity Ultrasound and Natural Oils on the Extraction and Antioxidant Activity of Lycopene from Tomato (Solanum lycopersicum) Waste DOI: 10.3390/antiox11071404 -
1029 cm⁻¹ confidence 1.0
“At the same time, this spectrum contains peaks at 1029 PO2cm-1, corresponding to from DNA, RNA and phospholipids, and 1520 which have been observed in normal breast tissues before.”
Depciuch 等 - 2020 - The Spectroscopic Similarity between Breast Cancer DOI: 10.3390/molecules25143295 -
650 cm⁻¹ confidence 1.0
“M Between the depressed patients and healthy controls, there are evident changes in shape and cm-1, cm-1, shifts of peaks at 650 and 1780 which correspond to phospholipids and lipids.”
Comparing dried and liquid blood serum samples of depressed patients: An analysis by Raman and infrared spectroscopy methods DOI: 10.1016/j.jpba.2017.11.074 -
1079 cm⁻¹ confidence 1.0
“Two peaks at 1079 and 1243 corresponded to symmetric and PO2asymmetric stretching vibrations of from phospholipids, respectively.”
Effect of High Blood Cortisol Concentration on the Spectroscopically Determined Secondary Structure of Proteins and Lipid Balance on the Example of Elite Women Volleyball Players DOI: 10.21203/rs.3.rs-228476/v1 -
1145 cm⁻¹ confidence 1.0
“Peaks formed at 1145 cm-1 might also be due to the PO2 group vibration of the phospholipids present in the cold pressed walnut oil.”
Walnut Oil Oleogels as Milk Fat Replacing System for Commercially Available Chocolate Butter DOI: 10.3390/gels8100613 -
1749 cm⁻¹ confidence 1.0
“The two major peaks at 1749 and 1704 were assigned to saturated ester C=O stretching that originated from cholesterol esters or phospholipids part of KS.”
Microwave-Assisted Synchronous Nanogold Synthesis Reinforced by Kenaf Seed and Decoding Their Biocompatibility and Anticancer Activity DOI: 10.3390/ph15020111 -
1082 cm⁻¹ confidence 1.0
“Similarly, they were reported to increase the oxidagroups of phospholipids band at 1082 https://aocs.onlinelibrary.w significantly tive stress in cancer cells (Sánchez et al., 2008) and to increased with the statin treatments, yet only”
Comparison of the Effects of Statins on A549 Nonsmall‐Cell Lung Cancer Cell Line Lipids Using Fourier Transform Infrared Spectroscopy: Rosuvastatin Stands Out DOI: 10.1002/lipd.12296 -
1236 cm⁻¹ confidence 1.0
“PO2-: spectral peak at 1236 corresponded to an asymmetric stretching of phospholipids”
Probing the Anti-Cancer Potency of Sulfated Galactans on Cholangiocarcinoma Cells Using Synchrotron FTIR Microspectroscopy, Molecular Docking, and In Vitro Studies DOI: 10.3390/md19050258
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