What absorbs at 967 cm⁻¹ in an FTIR spectrum?
A band near 967 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Jawapan pantas
A band near 967 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.
Penetapan kumpulan berfungsi yang mungkin
| Kumpulan berfungsi | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| Silicon (Si) | 4 | 4 | 1.0 |
| Alkene (C=C) | 4 | 3 | 1.0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| S eq o | 2 | 2 | 1.0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1.0 |
| Methacrylate | 2 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| Carbonyl (C=O) | 2 | 2 | 1.0 |
| Amide | 2 | 2 | 1.0 |
| Acetate | 2 | 2 | 1.0 |
| Nucleic acid | 2 | 2 | 1.0 |
| Alkyl C-H | 2 | 1 | 1.0 |
| Silanol (Si-OH) | 1 | 1 | 1.0 |
| C-S single bond | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Chitosan | 1 | 1 | 1.0 |
| Aldehyde (CHO) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Fatty acid | 1 | 0 | 1.0 |
Pemeringkatan mencerminkan bukti literatur terkumpul, bukan satu peraturan berwibawa. Sentiasa sahkan terhadap konteks sampel anda.
Bahan yang mungkin
| Bahan | Puncak sokongan | Kumpulan bertindih | Sumber dipetik |
|---|---|---|---|
| Chitosan-Based | 967, 2924, 1743 | Hydroxyl (O-H) | 1 |
| lipids | 967, 1735, 810 | Hydroxyl (O-H) | 1 |
| Chitosan | 967, 1650, 1655 | Hydroxyl (O-H) | 1 |
Bahan hanya dipaparkan apabila kumpulan literatur yang sama menyokong jalur ini dan sekurang-kurangnya satu puncak ciri tambahan.
Logik spektrum
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 967 cm⁻¹ is usually not enough for material identification by itself.
Penggunaan dunia sebenar
Jenis pertanyaan ini biasa dalam pengenalpastian polimer, saringan plastik tidak diketahui, penyelesaian masalah QC, pengesahan bahan kitar semula, dan semakan tugasan puncak yang disokong oleh literatur.
Kesilapan biasa
- Menganggap satu jalur terpencil sebagai bukti bahan tanpa memeriksa sekurang-kurangnya satu atau dua puncak sokongan.
- Mengabaikan pertindihan: pelbagai kumpulan berfungsi boleh menyumbang berhampiran nombor gelombang yang sama.
- Melangkau pengesahan apabila bahan tambahan, campuran, pengoksidaan, atau pencemaran boleh memesongkan spektrum.
Nasihat pengesahan
Apabila kekaburan masih ada, sahkan hipotesis dengan DSC, GC-MS, atau TGA, terutamanya untuk campuran, sampel terdegradasi, dan polimer terisi.
Literatur di sebalik penetapan ini
-
Silicon (Si) keyakinan 1.0
“Materials Science in Semiconductor Processing 67 (2017) 46-54 967cm-1 seen at for the sample nitrided for 30min can be attributed to t = 30 min TO amorphous Si [37,39].”
Growth of silicon nitride by nitridation of amorphous silicon at low temperature in hot-wire CVD DOI: 10.1016/j.mssp.2017.05.015 -
Nucleic acid keyakinan 1.0
“950cm(cid:3)1 are dehydrated, the DNA bands at 967 and are absent a-helical b-sheet In addition, the positions of and bands are”
Rapid approach to analyze biochemical variation in rat organs by ATR FTIR spectroscopy DOI: 10.1016/j.saa.2013.09.131 -
Silicon (Si) keyakinan 1.0
“The absorption peak at 967 4 Figure 4 demonstrates the FTIR spectra of PFSS, CR, and CR-loaded PFSS at different associated with Si-O-Fe, proves the formation of a high polymeric substance of PFSS, dosage loadings and pH values.”
Degradation of Diazo Congo Red Dye by Using Synthesized Poly-Ferric-Silicate-Sulphate through Co-Polymerization Process DOI: 10.3390/polym15010237 -
Phosphate (PO4) keyakinan 1.0
“COH stretch 1467 1090 C-H bend PO2 stretch 1092 PO2 stretch 967 Choline stretch 1172”
Prediction of Neonatal Respiratory Distress Biomarker Concentration by Application of Machine Learning to Mid-Infrared Spectra DOI: 10.3390/s22051744 -
C c single bond keyakinan 1.0
“cm-1 (C-N in-plane deformation), 1201 (Py ring vibration), 1097 (asymmetric S(=O) 2 cm-1 stretching vibration), 1049 (symmetric S(=O) stretching and Py ring C-H deformation 2 cm-1 cm-1 vibration), 967 (C-C out of plane ring deformation vibr”
New conductive copolymer membranes via track-etched PC templates for biological media ultra-filtration DOI: 10.1016/j.nimb.2007.08.066 -
Alkene (C=C) keyakinan 1.0
“the increase in trans double bonds during cm-1 thermal oxidation can be observed by the increasing peak intensities at 967 [48].”
Chitosan-Based Anti-Oxidation Delivery Nano-Platform: Applications in the Encapsulation of DHA-Enriched Fish Oil DOI: 10.3390/md19080470 -
Nucleic acid keyakinan 1.0
“LLM confirmed rule peak-group candidate”
Di Giambattista 等 - 2010 - UVB radiation induced effects on cells studied by DOI: 10.1007/s00249-009-0446-9 -
keyakinan 1.0
“Additionally, the Si-O band of XLG at cm-1 967 [71] was found in all NC hydrogel spectra but modified because of the interaction with PNVP (Figure 4a,b).”
Poly(N-vinylpyrrolidone)–Laponite XLG Nanocomposite Hydrogels: Characterization, Properties and Comparison with Divinyl Monomer-Crosslinked Hydrogels DOI: 10.3390/polym14194216
Ada spektrum dengan jalur ini?
Muat naik spektrum FTIR anda dan dapatkan laporan tafsiran penuh — penetapan puncak dengan petikan literatur, padanan perpustakaan, dan rantaian bukti berkadar keyakinan — dalam beberapa saat.