What absorbs at 1563 cm⁻¹ in an FTIR spectrum?
A band near 1563 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 6 cited sources
Quick answer
A band near 1563 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 |
|---|---|---|---|
| Amide | 5 | 4 | 1.0 |
| Aromatic ring | 2 | 1 | 1.0 |
| N h | 2 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Nitrogen heterocycle | 1 | 1 | 0.7 |
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 |
|---|---|---|---|
| polyamide | 1563, 1663, 1541 | Amide, N h | 1 |
| ZnO NPs | 1563, 1664, 875 | Amide, N h | 1 |
| polyaniline | 1563, 1565, 1570 | Aromatic ring, Amide, Ring structure | 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 1563 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
-
置信度 1.0
“The presence of the PAMAM layer is indicated The full FTIR spectra for the various samples after surface modifications are shown in by distinctive peaks, such as C=O stretching at 1613 cm-1 and N-H bending at 1563 cm-1.”
Surface Heparinization of a Magnesium-Based Alloy: A Comparison Study of Aminopropyltriethoxysilane (APTES) and Polyamidoamine (PAMAM) Dendrimers DOI: 10.3390/jfb13040296 -
Amide 置信度 1.0
“cm-1 cm-1) 1546-1566 cultivars, the amide II peaks at At 10 DAI, the peak intensity of amide II (1563.1 disap-”
Synchrotron based phase contrast X-ray imaging combined with FTIR spectroscopy reveals structural and biomolecular differences in spikelets play a significant role in resistance to Fusarium in wheat DOI: 10.1186/s12870-014-0357-5 -
Aromatic ring 置信度 1.0
“This is not surprising as phenazine units are cm21 ture.39-41 likely to be produced at rather low acidity of the reaction The bands at 1563 and 1480 in PANI ES are cm21 8.43 medium at pH 4 to assigned to quinonoid and benzene ring stretchin”
Synthesis and Characterization of Polyaniline Nanoparticles in Phosphonic Acid Amphiphile Aqueous Micellar Solutions for Waterborne Corrosion Protection Coatings DOI: 10.1002/pola.27602 -
Amide 置信度 1.0
“LLM confirmed rule peak-group candidate”
Homogeneous nucleation in polyamide 66, a two-stage process as revealed by combined nanocalorimetry and IR spectroscopy DOI: 10.1007/s00396-022-04980-4 -
Amide 置信度 1.0
“The 1595 bridge.17,21,25-27 cm-1 C-D The 1563 band methine Cph1.21 corresponds to amide II, as previously assigned for”
Stojkovic 等 - 2014 - FTIR Spectroscopy Revealing Light-Dependent Refold DOI: 10.1021/jz501189t -
Nitrogen heterocycle 置信度 0.7
“Text mentions '1563 cm-1' in context of pyrrole ring.”
Chatterjee 等 - 2013 - Nanochannel morphology of polypyrrole-ZnO nanocomp DOI: 10.1039/c3ta12796f
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