What absorbs at 3398 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 3398 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 3398 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

• Hydroxyl (O-H) 信頼度 1.0

  “cm-1 Pure TA spectra displayed an infrared absorption band at 3398 related to the cm-1 hydrogen-bonded hydroxyl stretching vibration, at 1706 associated with stretching vibration of the carbonyl group (in the aliphatic ester bonds).”

  Chitosan-Coated PLGA Nanoparticles Encapsulating Triamcinolone Acetonide as a Potential Candidate for Sustained Ocular Drug Delivery DOI: 10.3390/pharmaceutics13101590
• N h 信頼度 1.0

  “LLM confirmed rule peak-group candidate”

  Bouldin 等 - 2014 - Biocatalytic Synthesis of Fluorescent Conjugated I DOI: 10.3390/bioengineering1040246
• Hydroxyl (O-H) 信頼度 1.0

  “LLM confirmed rule peak-group candidate”

  Han 等 - 2023 - Fourier Transform Infrared Spectrometry Detection DOI: 10.1021/acsomega.2c05933
• Silicon-oxygen (Si-O) 信頼度 1.0

  “cm-1 The spectrum of SiO 2/GO (Figure 6c) showed an abroad peak at 3398 that The spectrum of SiO2/GO (Figure 6c) showed an abroad peak at 3398 cm-1 that becm-1 belonged to -OH groups of SiO and GO.”

  Sustainable Remedy Waste to Generate SiO2 Functionalized on Graphene Oxide for Removal of U(VI) Ions DOI: 10.3390/su14052699
• Metal oxygen 信頼度 1.0

  “Viswanatha, Open FTIR spectroscopy, showing the broadening of the highUnderstanding the role of surface capping ligands in cm(cid:1)1 O-Zn-O]COH intensity peak at 3398 for coordination passivating the quantum dots using copper dopants as ef”

  l-Alanine capping of ZnO nanorods: increased carrier concentration in ZnO/CuI heterojunction diode DOI: 10.1039/c7ra12385j
• 信頼度 1.0

  “Aloe vera showed an adsorp- -1, tion band of about 3398 cm which may be characteristic of amino acids due to the presence of hydrogen-bonded N cm-1 - H.”

  Naseriyeh 等 - 2022 - Preparation of liposomal hydrogel containing Calen DOI: 10.14715/cmb/2022.68.11.1
• Hydroxyl (O-H) 信頼度 1.0

  “At high frequencies, the FTIR spectrum frequencies, the FTIR spectrum shows also a band at 3398 that corresponds to O-H bridging of Ramis and coworkers [37] and Wen and coworkers [38].”

  Preparation, Characterization and Catalytic Activity of Nickel Molybdate (NiMoO4) Nanoparticles DOI: 10.3390/molecules23020273
• Protein 信頼度 0.9

  “Explicit assignment in text.”

  Developmental stages of biofilm and characterization of extracellular matrix of manglicolous fungus Aspergillus niger BSC‐1 DOI: 10.1002/jobm.201900550