What absorbs at 3270 cm⁻¹ in an FTIR spectrum?
A band near 3270 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Hydroxyl (O-H) | 5 | 5 | 0.9 |
| Protein beta sheet | 1 | 1 | 0.9 |
| Amide | 1 | 1 | 0.9 |
| Hydrogen bond | 1 | 1 | 0.8 |
| N h | 1 | 1 | 0.8 |
| Protein | 1 | 1 | 0.7 |
| Carbohydrate | 1 | 1 | 0.6 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
Amide 置信度 0.9
“Explicit assignment: 'band at 3270 cm-1, β-sheet CO (amide A)'.”
Rozenberg 和 Shoham - 2007 - FTIR spectra of solid poly-L-lysine in the stretch DOI: 10.1016/j.bpc.2006.07.008 -
Hydroxyl (O-H) 置信度 0.9
“O-H stretching”
Ali 等 - 2023 - Characterization of plastic degrading bacteria iso DOI: 10.1016/j.sjbs.2023.103628 -
Hydroxyl (O-H) 置信度 0.9
“Explicit assignment: 'broad peak at 3270 attributed to the stretching'”
Villacres 等 - 2023 - Preparation of Composite Films of Sodium Alginate- DOI: 10.21577/0103-5053.20230064 -
Hydroxyl (O-H) 置信度 0.9
“explicit assignment”
del Carmen Travieso Novelles 等 - 2021 - Biosynthesis of fluorescent silver nanoparticles f DOI: 10.1186/s40643-020-00354-2 -
N h 置信度 0.8
“Range 3270-3335 cm-1 indicating overlap of N-H and O-H related peaks”
Khruengsai 等 - 2022 - Biodegradation of Polyester Polyurethane by Embarr DOI: 10.3389/fmicb.2022.874842 -
Hydrogen bond 置信度 0.8
“Text: 'wide band at 3270 cm-1' for hydrogen bonding.”
Bukhovets 等 - 2020 - Interpolymer Complexes of Eudragit(R) Copolymers a DOI: 10.3390/polym12071459 -
Hydroxyl (O-H) 置信度 0.8
“attributed to -OH stretching”
Sarrigiannidis 等 - 2020 - Chiral Tartaric Acid Improves Fracture Toughness o DOI: 10.1021/acsabm.0c00555 -
置信度 0.7
“Text: 'bands manifested at 3240 and 3270 affirm the existence of both' cellulose I and II.”
Al-Hagar 和 Abol-Fotouh - 2022 - A turning point in the bacterial nanocellulose pro DOI: 10.1038/s41598-022-11010-4
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