What absorbs at 977 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 977 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 977 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

• Acetate 信頼度 1.0

  “The GO spectrum presents a broad band at 3192 cm-1, corresponding to the O-H stretching vibration, and peaks associated to the C = O (1734 cm-1), C-OH (1399 cm-1), C-O-C (1207 cm-1) and C-O (977 cm-1) vibrations.”

  Joining Caffeic Acid and Hydrothermal Treatment to Produce Environmentally Benign Highly Reduced Graphene Oxide DOI: 10.3390/nano11030732
• Silanol (Si-OH) 信頼度 1.0

  “The silanol band around 3740 cm-1 and 977 cm-1 decreased in intensity with higher cycle numbers as TMI”

  Synthesis of High Surface Area—Group 13—Metal Oxides via Atomic Layer Deposition on Mesoporous Silica DOI: 10.3390/nano12091458
• Acetate 信頼度 1.0

  “977 978 cm-1 The absorptions in the region between 1200 and 1000 are indicative of C-O-C 417 979 980”

  The affiliation of Hexasterias problematica and Halodinium verrucatum sp. nov. to ciliate cysts based on molecular phylogeny and cyst wall composition DOI: 10.1016/j.ejop.2018.09.002
• 信頼度 1.0

  “Other peaks, ascribed to vibrations from the structure of tobermorite, are at about 1052 cm-1 (νasSi-O-Si), 997 cm-1 (νSi-O-), 977 cm-1”

  Phase Composition of Silica Fume—Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA DOI: 10.3390/ma14112786
• 信頼度 1.0

  “crystalline β phase, where the intensities increase after doping Ag NWs into PVDF, while the intensities cm-1, of the absorption peaks at 977, 796 and 762 which are attributed to the crystalline α phase, drop after doping Ag NWs into PVDF.”

  Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires DOI: 10.3390/s140609889
• Nucleic acid 信頼度 1.0

  “The spectrum groups associated with the stretching bands, 43of YAP-KD were associated with positive scores on the phosphodiester bonds from the nucleic acid, and PO 977cm-1 1000cm-1 score plot (PC1) and presented as a negative loading of ph”

  Lorthongpanich 等 - 2019 - YAP as a key regulator of adipo-osteogenic differe DOI: 10.1186/s13287-019-1494-4
• Silicon-oxygen (Si-O) 信頼度 1.0

  “4 4 900, 930 and 977 cm-1 as asymmetric stretching of SiO4 as shown in Table 2.”

  Phase Transformation, Optical and Emission Performance of Zinc Silicate Glass-Ceramics Phosphor Derived from the ZnO–B2O3–SLS Glass System DOI: 10.3390/app10144940
• 信頼度 1.0

  “15, the peak at 977 cm-1 to 1176 was due to asymmetric and symmetric tetrahecm-1 dral of SiO or stretch vibration of Al 2O 3, whereas 977 In conclusion, the compressive strength of silicon manwas due to vibration bending of Si-O-Si [71].”

  Effect of Chemical Treatment on Silicon Manganese: Its Morphological, Elemental and Spectral Properties and Its Usage in Concrete DOI: 10.1007/s12633-021-01569-4