What absorbs at 1143 cm⁻¹ in an FTIR spectrum?

快速回答

A band near 1143 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.

可能的官能基指派

排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。

可能的材料

僅當同一文獻庫支援此波段以及至少一個額外特徵峰時，才會顯示材料。

光譜邏輯

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 1143 cm⁻¹ is usually not enough for material identification by itself.

實際使用

此類查詢常見於聚合物鑑別、未知塑膠篩選、品管故障排除、再生材料驗證，以及基於文獻的峰值歸屬審查。

常見錯誤

• 將一個孤立的譜帶視為材料的證據，而未檢查至少一兩個支持峰。
• 忽略重疊：多個官能團可能在相同波數附近貢獻。
• 當添加劑、混合物、氧化或污染物可能扭曲譜圖時，跳過驗證。

驗證建議

當仍然存在歧義時，使用DSC、GC-MS或TGA驗證假設，特別是對於混合物、降解樣品和填充聚合物。

這些指派背後的文獻

• Alkyl C-H 信心 1.0

  “Major infra-red spectral peaks of PVA (2946.67 stretching of C-H, 1142.72 cm-1;”

  Sprayed in-situ synthesis of Polyvinyl alcohol/Chitosan loaded Silver nanocomposite hydrogel for improved antibacterial effects DOI: 10.1016/j.ijbiomac.2019.09.186
• 信心 1.0

  “3 Effect of pH (A) and temperature (B) on the decolorization of MB by strain Acinetobacter pittii cm-1, the MB was reported at 2350 while the absorption corresponding to the H-N-H bending cm-1.Thesepeaks werealsosignificantly reducedin thes”

  Biodegradation of Methylene Blue as an Evidence of Synthetic Dyes Mineralization during Textile Effluent Biotreatment by Acinetobacter pittii DOI: 10.1007/s40710-020-00443-6
• Acetate 信心 1.0

  “are 1143, 1079, 927, and 862 the internal structure of the grain, given that through miThe bands at 1143 and C-O-C C-OH cm-1 croscopy it was found that the granule maintains its 1079 correspond to and stretching”

  Roa Acosta 等 - 2020 - Structural and thermal properties of the amaranth DOI: 10.1515/ijfe-2020-0024
• Phosphate (PO4) 信心 1.0

  “1143cm-1 phosphate band.”

  Spevak 等 - 2013 - Fourier Transform Infrared Spectroscopic Imaging P DOI: 10.1007/s00223-013-9695-9.
• Hydroxyl (O-H) 信心 1.0

  “cm-1 cm-1 absorption at 1639 of O-H type from bound water molecules and bands at 1143, 1073 and 1024 due vibrations of the C-O-C from glycosidic bonds and O-H of alcohols.”

  Vasconcelos Silva 等 - 2019 - Nanostructured polymeric system based of cashew gu DOI: 10.1590/S1517-707620190003.0712
• 信心 1.0

  “Energy band gap determination of ZnO films sintered cm-1 The 1143 is attributed to Zn-OH stretching and at different temperatures with diffused reflectance spectra the appearance of this peak shows the adsorption”

  Investigation of physical properties of screen printed nanosized ZnO films for optoelectronic applications DOI: 10.1051/epjap/2015150019
• Acetate 信心 1.0

  “N C H O cm-1 1032 Aromatic C-H deformation, C-O deformation COS 0,03 46,11 6,00 47,87 cm-1 1143 Vibration in C-O-C Cellulose and Hemicellulose TW1 0,04 47,06 5,99 46,91 cm-1 1226 C= resistance and syringyl ring in lignin and xylan TW2 0,65”

  Aytin 等 - 2022 - Chemical, Hygroscopic, and Mechanical Properties o DOI: 10.15376/biores.17.1.785-801
• Aromatic ring 信心 1.0

  “A peak at 1143 corresponding to aromatic C-H stretching, and cm-1 the band at 795 are also observed due to the CH rocking of phenolic compounds.”

  The “End Life” of the Grape Pomace Waste Become the New Beginning: The Development of a Virtuous Cycle for the Green Synthesis of Gold Nanoparticles and Removal of Emerging Contaminants from Water DOI: 10.3390/antiox11050994