What absorbs at 3621 cm⁻¹ in an FTIR spectrum?
A band near 3621 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 7 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) | 4 | 3 | 1.0 |
| Aromatic ring | 2 | 1 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 1 | 1.0 |
| Chitosan | 1 | 1 | 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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Chitosan 置信度 1.0
“FTIR spectrum presented significant peaks at 3621 1013 was attributed to chitosan, Accepted: 11October2022 cm-1 29Si, 27Al, 13H and 787 signified the stretching of Si-O-Si on HNT.”
Synthesis and Optimization of Superhydrophilic-Superoleophobic Chitosan–Silica/HNT Nanocomposite Coating for Oil–Water Separation Using Response Surface Methodology DOI: 10.3390/nano12203673 -
Aromatic ring 置信度 1.0
“from alum and wood, aromatic skeletal vibration attribcalcium hydroxide at 3621 cm-1 uted to lignin at 1505”
Nanotechnologies for the restoration of alum-treated archaeological wood DOI: 10.1007/s00339-016-9833-0 -
Hydroxyl (O-H) 置信度 1.0
“Sci.2021,11,10049 6of19 at 3696 and 3621 cm-1 (outer and inner hydroxyl ion bands), 1028 cm-1 (Si-O-Si band), and 914 cm-1 (Al-O-H band).”
Investigation of Ancient Wall Painting Fragments Discovered in the Roman Baths from Alburnus Maior by Complementary Non-Destructive Techniques DOI: 10.3390/app112110049 -
Hydroxyl (O-H) 置信度 1.0
“Silver strongly diluted Deacon Both OH bands at 3621 and cm(cid:2)1 is resistant to dry and moist chlorine at room temperature.”
Farra 等 - 2013 - Understanding CeO2 as a Deacon catalyst by probe m DOI: 10.1039/C2CP42767B -
Water (H2O) 置信度 1.0
“Since protein9cm-1 3621cm-1 induced FTIR were 6 and bound water molecules play important role in membrane for the 3633 and proteins action, observation of hydrogen-bonding alterations bands (Fig.”
Fukuda 等 - 2013 - Detection of a protein-bound water vibration of ha DOI: 10.2142/biophysics.9.167 -
Hydroxyl (O-H) 置信度 1.0
“LLM confirmed rule peak-group candidate”
Ma 等 - 2019 - Investigation of the Optical, Physical, and Chemic DOI: 10.3390/su11143803 -
Silicon (Si) 置信度 1.0
“cm-1, cm-1, (4H) 601 The asymmetry the band at 3621 with a shoulder at ~3610 represents of the Si 602 stretching vibration in this region is consistent with the band structure in other garnet × (4H) 603 compositions previously assigned to (”
Coupled hydrogen and fluorine incorporation in garnet: New constraints from FTIR, ERDA, SIMS, and EPMA DOI: 10.2138/am-2021-7880
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