What absorbs at 1035 cm⁻¹ in an FTIR spectrum?
A band near 1035 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
A band near 1035 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| C-O single bond | 39 | 35 | 1.0 |
| Methoxy (OCH3) | 36 | 32 | 1.0 |
| Methacrylate | 36 | 32 | 1.0 |
| Acetate | 36 | 32 | 1.0 |
| Hydroxyl (O-H) | 18 | 18 | 1.0 |
| Silicon-oxygen (Si-O) | 14 | 14 | 1.0 |
| Carbohydrate | 10 | 10 | 1.0 |
| Alkyl C-H | 9 | 8 | 1.0 |
| Phosphate (PO4) | 8 | 6 | 1.0 |
| Silicon (Si) | 7 | 7 | 1.0 |
| Siloxane (Si-O-Si) | 7 | 7 | 1.0 |
| Metal oxygen | 5 | 5 | 1.0 |
| Phosphorus | 4 | 4 | 1.0 |
| Amide | 3 | 3 | 1.0 |
| Protein | 3 | 3 | 1.0 |
| S eq o | 3 | 2 | 1.0 |
| Aromatic ring | 3 | 2 | 1.0 |
| Oxygen heterocycle | 2 | 2 | 1.0 |
| N h | 2 | 2 | 1.0 |
| Lignin | 2 | 2 | 1.0 |
| Sulfonyl | 2 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Sulfonate | 1 | 1 | 1.0 |
| Thiocarbonyl | 1 | 1 | 1.0 |
| Phospholipid | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single fixed rule. Always confirm against your sample context.
Possible materials
| Material | Supporting peaks | Overlapping groups | Cited sources |
|---|---|---|---|
| cellulose | 1035, 1735, 1650 | Acetate, Methacrylate, C-O single bond | 1 |
| glucose | 1035, 1740, 1400 | C-O single bond, Methacrylate, Acetate | 1 |
| calcium phosphate | 1035, 1070, 1149 | C-O single bond, Methoxy (OCH3), Methacrylate | 1 |
| lignin | 1035, 1510, 1738 | Methacrylate, Acetate, C-O single bond | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1035 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literature behind these assignments
-
Sulfonyl confidence 1.0
“FTIR showed peak at 26 cm-1 1035 which corresponded to O=S=O stretching of sulphonic (-SO 3H) group.”
Balan 等 - 2021 - Esterification of residual palm oil using solid ac DOI: 10.1016/j.jtice.2012.07.001. -
Hydroxyl (O-H) confidence 1.0
“of OH groups [49] and bands at 1150, 1074 and 1035 cm-1 refer to glycosidic bonds of type C-O-C cm-1.”
Development of Composite Scaffolds Based on Cerium Doped-Hydroxyapatite and Natural Gums—Biological and Mechanical Properties DOI: 10.3390/ma12152389 -
Hydroxyl (O-H) confidence 1.0
“were subjugated to drought conditions, one may expect to cm-1 C-O differences 1035 peak associated with stretching of primary observed established in metabolites associated with alcohols in lignin and polysaccharides.”
Bryant 等 - 2023 - Variable lignin structure revealed in Populus leav DOI: 10.1039/d3ra03142j -
C-O single bond confidence 1.0
“Medium to weak intensity 1035cm-1 C-OH peaks at region were assigned to in alcohols and 3.”
Fossil cutin of Johnstonia coriacea (Corystospermaceae, Upper Triassic, Cacheuta, Argentina) DOI: 10.1016/j.coal.2018.02.016 -
Silicon (Si) confidence 1.0
“Another evidence of the silylation reaction is shown by the cm-1 increase in intensity of the peak at 1035 which is assigned to the overlapping of SiO-Si band with the C-O stretching of cellulose as explained by Frone et al.”
Indarti 等 - 2019 - Silylation of TEMPO oxidized nanocellulose from oi DOI: 10.1016/j.ijbiomac.2019.05.161 -
confidence 1.0
“The absorbance peak at 1035 was due to vibration of functional groups of Ti-O-C[20] cm-1”
The preparation and characterization of the Ni-NiO/TiO2 hollow composite materials on micro-nano cellulose fibers DOI: 10.1016/j.vacuum.2018.06.044 -
Acetate confidence 1.0
“cm-1 between 1200 and 1100 is region of hemicellulose and cellulose, which attained a maximum value around cm-1 cm-1 cm1035 due to C-O stretching [14].”
Lun 等 - 2017 - Fourier Transform Infrared Spectroscopy (FTIR) ana DOI: 10.1063/1.4981871 -
Carbohydrate confidence 1.0
“cm-1 3b), it was clear that the glucose peak at 1035 decreased with decreasing glucose u s cm-1 content, whereas the lactate peak at 1122 increased with increasing lactate content.”
Nondestructive assessment of tissue engineered cartilage based on biochemical markers in cell culture media: Application of attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy DOI: 10.1039/d1an02351a.
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