What absorbs at 1263 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 1263 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

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可能性のある材料

同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。

スペクトルロジック

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 1263 cm⁻¹ is usually not enough for material identification by itself.

実使用例

この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。

よくある間違い

• 少なくとも1～2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
• 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
• 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。

検証アドバイス

曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。

これらのアサインの根拠となる文献

• Alkyl C-H 信頼度 1.0

  “The spectrum shows also two bands at 1263cm(cid:2)1, C-H C-O 1369 and owing to bending of cellulose and the stretching vibration 1040cm(cid:2)1”

  Alkali and epoxy-silane surface modified pine cone flour reinforced polypropylene/poly (lactic acid) DOI: 10.1080/01694243.2021.1952677
• C c single bond 信頼度 1.0

  “The starch spectrum exhibited three characteristic scattering peaks at 1263, and941cm-1, 1053, whichareduetothestretchingofC-O,C-C,andC-OHbondsbelonging cm-1 to starch [37].”

  Preparation and Characterization of Super-Absorbing Gel Formulated from -Carrageenan–Potato Peel Starch Blended Polymers DOI: 10.3390/polym13244308
• Silicon carbon 信頼度 1.0

  “LLM confirmed rule peak-group candidate”

  A forensic international market survey of condom lubricants and personal hygiene products using ATR-FTIR coupled to chemometrics DOI: 10.1016/j.scijus.2021.01.005
• Alkene (C=C) 信頼度 1.0

  “The characteristic bands at 1508 cm-1 and 1263 cm-1 were determined to be C=C, C-O stretching or bending vibrations of the groups in lignin.”

  Cresnar 等 - 2021 - Insight into the Surface Properties of Wood Fiber- DOI: 10.3390/polym13101535
• Acetate 信頼度 1.0

  “C=O stretching 1724 O-H Overlapping (def.) of C=C ring stretching 1585, 1442 C-O stretching due to phenol 1263 C-H C=C-H (def.) of (o.o.p.) from aromatic rings 800 Weak absorption indicating C-S stretching 730, 710, 678 reported melanins ar”

  Purification and characterisation of a sulphur rich melanin from edible mushroom Termitomyces albuminosus Heim DOI: 10.1080/21501203.2018.1494060
• Acetate 信頼度 1.0

  “Additional lignin-related peaks are those at 1603 cm-1 for aromatic skeletal and C=O stretch vibrations, 1506 cm-1 for the C=C stretch of aromatic skeletal vibration and 1263 cm-1 for the G-ring plus C=O stretch [23].”

  Jambrekovic 等 - 2022 - Viscoelastic and Thermal Properties of Styrene Mod DOI: 10.3390/polym14040786
• Acetate 信頼度 1.0

  “The peaks at 1263 cm-1 is the characteristic peak of CO-O-C, and the characteristic peak of C-O-C is at 1091 cm-1.”

  Surface Modification of Carbon Microspheres with Guanidine Phosphate and Its Application as a Flame Retardant in PET DOI: 10.3390/polym12081689
• Acetate 信頼度 1.0

  “Nanoscale Research Letters Page 6 of 10 (2016) 11:152 cm-1 C-O are attributed to the stretching of 1263”

  Kolodynska 等 - 2016 - Development of New Effective Sorbents Based on Nan DOI: 10.1186/s11671-016-1371-3