What absorbs at 3253 cm⁻¹ in an FTIR spectrum?
A band near 3253 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 5 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) | 3 | 3 | 1.0 |
| N h | 2 | 1 | 1.0 |
| Ammonium | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Amine primary | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Secondary amine | 1 | 0 | 1.0 |
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
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Acetate 置信度 1.0
“For OI3-oligomer, a broad band at 3253 C-O cm-1 ─NH is primary stretch of amines, a small band near 3017 cm-1 ─C─H appeared due to aromatic stretch.”
Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy DOI: 10.1002/app.48404 -
Hydroxyl (O-H) 置信度 1.0
“FTIR analysis showed two conspicuous peaks at 3253 and 1461 which correspond to O-H stretch of phenols and N-H bond of primary amines of proteins respectively.”
Cost Effective, Green Synthesis of Copper Oxide Nanoparticles Using Fruit Extract of Syzygium alternifolium (Wt.) Walp., Characterization and Evaluation of Antiviral Activity DOI: 10.1007/s10876-018-1395-1 -
Ammonium 置信度 1.0
“The hydroxyl band in CS:Dextran which peaked cm-1 at 3253 showed a shift on the inclusion of various amounts of the ammonium fluoride salt and their intensity lowered significantly.”
Aziz 等 - 2019 - High Proton Conducting Polymer Blend Electrolytes DOI: 10.3390/biom9070267 -
Hydroxyl (O-H) 置信度 1.0
“explicit assignment”
Bharudin 等 - 2013 - Condensed Tannins from Acacia Mangium Bark Charac DOI: 10.1063/1.4858646 -
Hydroxyl (O-H) 置信度 1.0
“LLM confirmed rule peak-group candidate”
Development and In Vitro Evaluation of Biocompatible PLA-Based Trilayer Nanofibrous Membranes for the Delivery of Nanoceria: A Novel Approach for Diabetic Wound Healing DOI: 10.3390/polym13213630
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