What absorbs at 3614 cm⁻¹ in an FTIR spectrum?
A band near 3614 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
Quick answer
A band near 3614 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.
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 | 4 | 1.0 |
| Metal hydroxyl | 2 | 1 | 1.0 |
| Hydrogen bond | 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。
Possible materials
| 材料 | 支持峰 | Overlapping groups | 引用来源 |
|---|---|---|---|
| LDPE | 3614, 1720, 1737 | Hydroxyl (O-H) | 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 3614 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.
这些分配背后的文献
-
Hydroxyl (O-H) 置信度 1.0
“(2005) (3619 Based on these observations we classify the FTIR absorption H/106Si cm-1 at C = 2300 and 3614 at 50 000 and 15 000 peaks in the OH vibration region into 4 classes.”
Nishihara 等 - 2008 - Effect of chemical environment on the hydrogen-rel DOI: 10.2138/am.2008.2653 -
Hydroxyl (O-H) 置信度 1.0
“These findings suggest that CPEF-6 has the ability to degrade polyethylene, and thus For the control, critical characteristic absorption bands were assigned from 3752 to can cause certain damage to the surface of LDPE, while heat-treated LD”
Gong 等 - 2023 - Biodegradation of Low Density Polyethylene by the DOI: 10.3390/jof9060605 -
Hydroxyl (O-H) 置信度 1.0
“For sample plates addition to the primary OH absorption bands of muscovite 3614cm-1, with large interference fringes, we attempted to reduce their (Fig.”
Kronenberg 等 - 2017 - Synchrotron FTIR imaging of OH in quartz mylonites DOI: 10.5194/se-8-1025-2017 -
Hydrogen bond 置信度 1.0
“The peak at 3614 cm-1 represents the interlayer hydrogen bonding, corresponding Polymers2021,13,897 7of22 to the stretching vibration of the OH coordinated octahedral layer of Al+Mg [18].”
On the Use of OPEFB-Derived Microcrystalline Cellulose and Nano-Bentonite for Development of Thermoplastic Starch Hybrid Bio-Composites with Improved Performance DOI: 10.3390/polym13060897 -
置信度 1.0
“Na-ATP has characteristic peaks at 3614 and 3545 which are attributed to the stretching vibrations of Al-OH and Fe-OH, respectively.”
Investigation on the Potential Application of Na-Attapulgite as an Excipient in Domperidone Sustained-Release Tablets DOI: 10.3390/molecules27238266
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