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nitrogen-containing hydroxylated or ether-containing organic polymer/material with aliphatic C-H and possible carbonyl-containing modification

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结果编号: 20250603170552529634264 所有者: publicuser 评论: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250603170552529634264 Date: 2025-06-03 15:07:51 Reported by: FTIR.fun Contact: [email protected]

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Top15

Similarity-ranked Top-15 library comparison

Choose matching result groups:
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Top 15 candidates

Reference library candidates

Rank Match % Compound Name Formula / SMILES Library preview Action
Reference candidates load with this Top-15 workbench.

Based on the library matches and evidence above.

Conclusion

nitrogen-containing hydroxylated or ether-containing organic polymer/material with aliphatic C-H and possible carbonyl-containing modification

General assessment
-
#7725 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. Top-15 library candidates cluster loosely around polymeric materials that often contain polar functionalities, including poly(ethylenimine)-epichlorohydrin type material, poly(vinyl alcohol), poly(ethylene oxide), and epichlorohydrin/ethylene oxide-related polymers.
  2. That library pattern is broadly consistent with the observed 3329, 1069, and 1036 cm-1 bands, which support O-H/N-H and C-O/C-N type bonding.
  3. The retrieval summary notes consensus clues of N-H / methyl, which is compatible with an aliphatic nitrogen-containing organic material.
Main limitation

The library confidence is low, with all listed top candidates reported at zero similarity, so the leading entity cannot be treated as a reliable identification.

Evidence & interpretation
Evidence

Key evidence

库主匹配
Poly(ethylenimine),epichlorohydrin modified #7725 | match 0.0%
材料方向
nitrogen-containing hydroxylated or ether-containing organic polymer/material with aliphatic C-H and possible carbonyl-containing modification The ordinary FTIR search does not support a firm material identification for this sample. The nearest library name is Poly(ethylenimine),epichlorohydrin modified, but the match confidence is effectively zero and there is no direct or related literature evidence to confirm that specific assignment. The measured spectrum is more safely described as a nitrogen-containing, hydroxylated or ether-containing organic material with aliphatic C-H bands and an additional carbonyl-containing feature, consistent with a polymeric or resin-like composition rather than a confidently identified single library entity.
Support

Evidence supporting the conclusion

Only sample-relevant statements that support the present conclusion are shown here.

  1. Top-15 library candidates cluster loosely around polymeric materials that often contain polar functionalities, including poly(ethylenimine)-epichlorohydrin type material, poly(vinyl alcohol), poly(ethylene oxide), and epichlorohydrin/ethylene oxide-related polymers.
  2. That library pattern is broadly consistent with the observed 3329, 1069, and 1036 cm-1 bands, which support O-H/N-H and C-O/C-N type bonding.
  3. The retrieval summary notes consensus clues of N-H / methyl, which is compatible with an aliphatic nitrogen-containing organic material.
  4. The sample contains aliphatic C-H absorption at 2926 cm-1, supporting an organic polymeric or resin-like matrix.
  5. The sample shows a broad band near 3329 cm-1 consistent with O-H and/or N-H stretching, indicating hydrogen-bonded polar functionality.
  6. Bands at 2926 cm-1 support aliphatic C-H stretching from a hydrocarbon backbone or substituents.
  7. Strong features at 1069 and 1036 cm-1 are consistent with C-O and/or C-N single-bond stretching, which fits hydroxylated, ether-containing, or amine-containing organic materials.
  8. The band at 1643 cm-1 can be compatible with bound water, amide-like environments, C=N/C=C contributions, or other conjugated/polar functionality, but it is not specific here.
  9. A distinct absorption at 1728 cm-1 indicates a carbonyl-containing component or modification, which broadens the interpretation beyond a simple polyamine or polyether alone.
  10. Additional bands at 1508, 1416, 1229, 873, and 827 cm-1 provide fingerprint-region complexity but do not uniquely support the top library entity.
Limitations

Evidence that limits the conclusion

  • The library confidence is low, with all listed top candidates reported at zero similarity, so the leading entity cannot be treated as a reliable identification.
  • No related-literature interpretation was recovered to narrow the assignment.
  • The carbonyl band at 1728 cm-1 is not naturally explained by every leading library candidate and suggests either chemical modification, additive content, oxidation, or a different class of material than the top hit alone.
  • The present evidence cannot distinguish confidently among amine-containing polymers, hydroxylated polymers, ether-rich polymers, or mixed/modified resin systems.
  • The 3329 cm-1 band could arise from O-H, N-H, or both, and FTIR alone here does not separate those contributions securely.
  • The 1643 and 1728 cm-1 bands leave open whether the sample contains amide, ester, aldehyde/ketone, oxidized polymer functionality, or a blend component.
  • Because the best library hit is not supported by a meaningful similarity score, the final conclusion must remain at a broadened material-direction level.
Recommendation

Suggested next verification

  • Re-measure the FTIR spectrum with improved baseline quality and broader sample preparation control, especially to confirm the shape and intensity of the 3329, 1728, and 1643 cm-1 bands.
  • Check whether the 1643 cm-1 feature decreases after thorough drying; if it does, adsorbed water is contributing and the remaining functional-group assignment will be clearer.
  • Collect complementary Raman or solid-state NMR data to distinguish polyamine, polyalcohol, and polyether character.
  • If the sample is soluble, use NMR or LC/MS after suitable preparation to determine whether the 1728 cm-1 band comes from ester/carbonyl modification or from a separate additive.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1036 1.00 - - - -
2 · 1069 0.99 - - - -
3 · 827 0.65 - - - -
4 · 873 0.59 - - - -
5 · 1416 0.53 - - - -
6 · 1229 0.49 - - - -
7 · 1508 0.39 - - - -
8 · 1643 0.34 - - - -
9 · 1728 0.25 - - - -
10 · 2926 0.25 - - - -
11 · 3329 0.24 - - - -
Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction method: Asymmetric Least Squares Smoothing

The wavelength range for analysis(cm-1): [(650, 4000)]

Raw spectrum without baseline correction or other processing:

Sample spectrum image
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