What absorbs at 1285 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 1285 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。

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 1285 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

• N c o 信頼度 1.0

  “The peaks at 1285 and 1078 are due to Ar-O = prepared with NCO/OH 2 are shown in Figure 3A and B, and R-O stretching, respectively, showing the presence of 1700 1720”

  Shoaib 和 Bahadur - 2016 - Synthesis of thermally and mechanically improved p DOI: 10.1515/epoly-2016-0134
• Acetate 信頼度 1.0

  “An intense peak at 2 cm-1 C=O 1710 is due to the stretching vibration and the cm-1 C-O signal at 1285 is attributable to the stretch.”

  β-cyclodextrin coating: improving biocompatibility of magnetic nanocomposites for biomedical applications DOI: 10.1007/s10856-020-6361-4
• Silicon (Si) 信頼度 1.0

  “3379cm-1 3381cm-1 mightbeduetoCa-Ostretchingvibrations,whiletheintense and are ascribed to Al-OH and AlSi1123cm-1 bands at 953 and OH/Li-vibrations, respectively [36], since Al3+ and Fe3+ attributed to Si-O strong 1389cm-1 replace the Si4+”

  Ahmad 等 - 2021 - Spectroscopic Analysis for Harnessing the Quality DOI: 10.1155/2021/6629640
• Amide 信頼度 1.0

  “PVP displayed a carbonyl stretching band at 1655 a band at 1655 cm-1, a group of C-H deformation-related bands around 1450 cm-1, CH2 cm-1, group of C-H deformation-related bands around 1450 CH wagging coupled with C2 wagging coupled with C-”

  Polypyrrole Aerogels: Efficient Adsorbents of Cr(VI) Ions from Aqueous Solutions DOI: 10.3390/gels9070582
• Acetate 信頼度 1.0

  “correspond to the C-C bond are centered at 1350 and 1325 cm-1 for the gauche and trans conformation, cm-1 gauche trans the C-C bond are centered at 1350 and 1325 for the and conformation, while the while the absorption bands that correspond”

  Bollas 等 - 2017 - Polymer Conformation under Confinement DOI: 10.3390/polym9020073
• Amide 信頼度 1.0

  “peaks at 1285 1207 1115 and cm-1 1075 were attributed to C-N and C-O-C stretching vibrations, C-O stretching vibration cm-1”

  In Vitro Interaction of Doxorubicin-Loaded Silk Sericin Nanocarriers with MCF-7 Breast Cancer Cells Leads to DNA Damage DOI: 10.3390/polym13132047
• Alkyl C-H 信頼度 1.0

  “The oleic acid showed principal peaks at 2922 cm-1, 2853 1708 1412 1285 and 935 that indicated asymmetric CH stretching, 2 cm-1, 1708 cm-1, 1412 cm-1, 1285 cm-1 and 935 cm-1 that indicated asymmetric CH2 stretchsymmetric CH stretching, C=O”

  In Vitro and Ex Vivo Evaluation of Fluocinolone Acetonide–Acitretin-Coloaded Nanostructured Lipid Carriers for Topical Treatment of Psoriasis DOI: 10.3390/gels8110746
• Hydroxyl (O-H) 信頼度 1.0

  “The spectra of catechin displayed cm-1 cm-1, cm-1, peaks at 3482 representing O-H stretching regions, and 1656 1285 cm-1 cm-1 1150 and 1071 representing the existence of aromatic rings [25].”

  Shah 等 - 2022 - Encapsulation of Catechin into beta-Glucan Matrix DOI: 10.3390/foods11101493