What absorbs at 3463 cm⁻¹ in an FTIR spectrum?
A band near 3463 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 7 cited sources
Përgjigje e shpejtë
A band near 3463 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.
Caktime të mundshme të grupeve funksionale
| Grup funksional | Fakte mbështetëse | Burimet e cituara | Besueshmëri e lartë |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 4 | 1,0 |
| Water (H2O) | 3 | 3 | 1,0 |
| N h | 2 | 2 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
Renditja pasqyron provat e grumbulluara të literaturës, jo një rregull të vetëm autoritar. Gjithmonë konfirmoni në kontekstin e mostrës suaj.
Materialet e mundshme
| Material | Maja mbështetëse | Grupe të mbivendosura | Burimet e cituara |
|---|---|---|---|
| ZnO | 3463, 1400, 3430 | Hydroxyl (O-H) | 1 |
| polyethylene | 3463, 1737, 1720 | Hydroxyl (O-H) | 1 |
| ZnO nanoparticles | 3463, 1219, 1726 | Hydroxyl (O-H) | 1 |
| PEG | 3463, 1650, 1342 | Hydroxyl (O-H) | 1 |
Materialet shfaqen vetëm kur i njëjti grup literature mbështet këtë brez dhe të paktën një pik karakteristik shtesë.
Logjika e spektrit
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 3463 cm⁻¹ is usually not enough for material identification by itself.
Përdorimi në botën reale
Ky lloj pyetjeje është i zakonshëm në identifikimin e polimereve, skriningun e plastikës së panjohur, zgjidhjen e problemeve të kontrollit të cilësisë, verifikimin e materialeve të ricikluara dhe rishikimin e caktimit të pikut të mbështetur nga literatura.
Gabimet e zakonshme
- Trajtimi i një brezi të izoluar si provë e një materiali pa kontrolluar të paktën një ose dy pika mbështetëse.
- Duke injoruar mbivendosjen: grupe të shumta funksionale mund të kontribuojnë afër të njëjtit numër valor.
- Kalimi i vërtetimit kur aditivët, përzierjet, oksidimi ose ndotja mund të shtrembërojnë spektrin.
Këshillë për verifikim
Kur mbetet paqartësi, verifiko hipotezën me DSC, GC-MS ose TGA, veçanërisht për përzierjet, mostrat e degraduara dhe polimerët e mbushur.
Literatura pas këtyre caktimeve
-
Hydroxyl (O-H) besueshmëri 1,0
“The broad band that appear at 3463 corresponding to O-H stretching could be attributed to the 17 presence of moisture in the sample [9].”
Mohammed 等 - 2018 - Effect of heat-treatment on the magnetic and optic DOI: 10.1088/2053-1591/aad1e5 -
Water (H2O) besueshmëri 1,0
“cm-1 Absorption peak centered at 3463 and 1636 are attributed to stretching and bending vibration of H 2O 40 caused by adsorbed water or humidity which shows that the surface of the samples contain active O-H groups 41 [39].”
Rekaby 等 - 2020 - Influence of cobalt addition and calcination tempe DOI: 10.1088/2053-1591/ab65de -
Hydroxyl (O-H) besueshmëri 1,0
“For the spectrum of PEG, the spectral band appeared at 3463 for cm-1 cm-1 O-H stretching vibrations, 2889 for C-H stretching vibrations, and 1469 and 1342 for C-H cm-1 bending vibrations.”
Green Synthesis and Characterization of Silver/Chitosan/Polyethylene Glycol Nanocomposites DOI: 10.3390/ijms12084872 -
Hydroxyl (O-H) besueshmëri 1,0
“Alternatively, the environment around Thr118 in MB is similar cm-1, to rhodopsin because of a similar O-H vibrational frequency at 3463 which originates from Thr118 that is exhibited in the unphotolized state (Figure S7).”
Spectral Tuning Mechanism of Primate Blue-sensitive Visual Pigment Elucidated by FTIR Spectroscopy DOI: 10.1038/s41598-017-05177-4 -
besueshmëri 1,0
“The bending vibration around 3463.08 1641 corresponds to N-H.”
Kawish 等 - 2020 - Enhancement in Oral Absorption of Ceftriaxone by H DOI: 10.3390/pharmaceutics12060492 -
Hydroxyl (O-H) besueshmëri 1,0
“In the spectrum of chitosan (Figure cm-1 where is crystal size, k is constant (0.94), nm 3(b)), the broad peak at 3463 is due to the -OH/-NH 𝜆 = 0.154 𝐷 2 cm-1 represents the wavelength of X-ray radiation, β is the full width stretching vib”
Nhu Thanh Nguyen 等 - 2020 - In Situ Synthesis and Characterization of ZnOChit DOI: 10.1155/2020/3892694 -
Water (H2O) besueshmëri 1,0
“The broad peak at 3463 cm-1 was the stretching stretching modes of OH/NH of the organic matrix or the adsorbed water molecules as modes of OH/NH of the organic matrix or the adsorbed water molecules as reported [56-”
Wilson 和 Pampadykandathil - 2023 - Novel Bone Void Filling Cement Compositions Based DOI: 10.3390/bioengineering10070752
Keni një spektër me këtë brez?
Ngarkoni spektrin tuaj FTIR dhe merrni një raport të plotë interpretimi — caktim i pikut me citime literaturë, përputhje biblioteke dhe një zinxhir provash të vlerësuar me besueshmëri — në sekonda.