What absorbs at 1563 cm⁻¹ in an FTIR spectrum?

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.

可能性のある官能基アサイン

ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。

Possible materials

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.

これらのアサインの根拠となる文献

• 信頼度 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 信頼度 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 信頼度 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 信頼度 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 信頼度 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 信頼度 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