What absorbs at 3860 cm⁻¹ in an FTIR spectrum?
A band near 3860 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 2 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Carbohydrate confidence 1.0
“groups of the polysaccharide domain and residual carboxylic acids showed its absorption maxima cm-1, as broadband at 3860 characteristic intense bands corresponding to the asymmetrical and aculeatissimum and S.”
Cutin from Solanum Myriacanthum Dunal and Solanum Aculeatissimum Jacq. as a Potential Raw Material for Biopolymers DOI: 10.3390/polym12091945 -
Metal oxygen confidence 1.0
“The TiO2 spectrum showed intense peaks at 3655 and 3860 cm-1 due to the 2 Polymers 2022, 14, x FOR PEER REVIEW 6 of 22 OH group of the H 2O molecule bonded to the TiO compound [43].”
Physical Properties of Fast-Growing Wood-Polymer Nano Composite Synthesized through TiO2 Nanoparticle Impregnation DOI: 10.3390/polym14204463
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