What absorbs at 1027 cm⁻¹ in an FTIR spectrum?
A band near 1027 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 1027 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 | 15 | 14 | 1.0 |
| Methoxy (OCH3) | 12 | 11 | 1.0 |
| Methacrylate | 12 | 11 | 1.0 |
| Acetate | 12 | 11 | 1.0 |
| Silicon-oxygen (Si-O) | 6 | 4 | 1.0 |
| Amide | 5 | 5 | 1.0 |
| Hydroxyl (O-H) | 5 | 5 | 1.0 |
| Carbohydrate | 4 | 4 | 1.0 |
| Alkyl C-H | 4 | 4 | 1.0 |
| Silicon (Si) | 3 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Aromatic ring | 2 | 2 | 1.0 |
| Secondary amine | 2 | 2 | 1.0 |
| C n single bond | 2 | 2 | 1.0 |
| Metal oxygen | 2 | 2 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Thiocarbonyl | 1 | 1 | 1.0 |
| Lignin | 1 | 1 | 1.0 |
| Silicate | 1 | 1 | 1.0 |
| Silanol (Si-OH) | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Carbonate | 1 | 1 | 1.0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1.0 |
| C c single bond | 1 | 0 | 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 |
|---|---|---|---|
| silica | 1027, 1100, 1080 | Methacrylate, Acetate | 1 |
| TiO2 | 1027, 1700, 1093 | Methacrylate, Acetate, C-O single bond | 1 |
| ZnO | 1027, 1400, 3430 | Acetate, Methacrylate, C-O single bond | 1 |
| polystyrene | 1027, 1020, 1600 | Methacrylate, Acetate, Methoxy (OCH3) | 1 |
| honey | 1027, 2005, 1199 | Methacrylate, Acetate, C-O single bond | 1 |
| ZnO nanoparticles | 1027, 1219, 1726 | 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 1027 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
-
Acetate confidence 1.0
“1137 C-O stretching (ST) 1027 carbohydrate 939”
Artemisia 等 - 2019 - The Properties of Brown Marine Algae Sargassum tur DOI: 10.14499/indonesianjpharm30iss1pp43 -
Acetate confidence 1.0
“The peaks at 1027 and that honey was the most abundant ingredient in the 1249cm(cid:3)1 C-O were due to the stretching of in the mixture (calibration) samples that were mixtures of C-OH”
Cebi 等 - 2020 - An evaluation of FTIR spectroscopy for prediction DOI: 10.1080/00218839.2019.1707009 -
confidence 1.0
“Another peak was observed at 1027cm-1 1028 due to the Ti-O-C bond in the hybrid [41].”
Robust Interface on ENR-50/TiO2 Nanohybrid Material Based Sol-Gel Technique: Insights into Synthesis, Characterization and Applications in Optical DOI: 10.1016/j.arabjc.2020.06.013 -
Aromatic ring confidence 1.0
“The bending of the CH2 group occurs at 1451 Vibrio fischeri The ecotoxicity test was performed with for the aqueous phases of cm-1, while the bending of the aromatic C-H groups has characteristic peaks at 1027 and (INH) experiments M1-24 an”
Optimization of Polystyrene Biodegradation by Bacillus cereus and Pseudomonas alcaligenes Using Full Factorial Design DOI: 10.3390/polym14204299 -
Amide confidence 1.0
“FTIR spectra Implants of FIB and HA-FIB films exhibited distinctive absorption maxima, in specific positions of FIB random MatrixAssistedPulsedLaserEvaporation 1540cm-1 1654cm-1 1243cm-1 1027cm-1 (MAPLE) coil form: amide II, amide I, amide”
Composite biocompatible hydroxyapatite⠍silk fibroin coatings for medical implants obtained by Matrix Assisted Pulsed Laser Evaporation DOI: 10.1016/j.mseb.2009.10.004 -
confidence 1.0
“By comparison of FTIR spectra of related silica cm-1 ∼1027 can be assigned to vibration modes glasses and their liquid solutions the peak at on the surface of silica particles.”
Osswald 和 Fehr - 2006 - FTIR spectroscopic study on liquid silica solution DOI: 10.1007/s10853-006-7327-8 -
Acetate confidence 1.0
“The sharp peak at 1350 indicates C-N stretch of the aromatic amines cm-1 and the carboxylic acid, while the peak at 1027 could be assigned to C-O stretching vibrations of alcohols, esters, ethers, C-N stretching of aliphatic amines, and car”
Abdelmigid 等 - 2022 - Green Synthesis of Zinc Oxide Nanoparticles Using DOI: 10.3390/molecules27041236 -
confidence 1.0
“clayey minerals, Si-O stretch at 1027 (see Figures S7, S8, S10, S12 and S14) [42].”
New Insights into the Medieval Hispano-Muslim Panel Painting: The Alfarje Found in a Balearic Casal (Spain) DOI: 10.3390/molecules28031235
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