What absorbs at 1484 cm⁻¹ in an FTIR spectrum?
A band near 1484 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
Jibu la haraka
A band near 1484 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.
Ugawaji unaowezekana wa vikundi vya kazi
| Kikundi cha kazi | Ukweli unaounga mkono | Vyanzo vilivyotajwa | Uaminifu wa juu |
|---|---|---|---|
| Ring structure | 2 | 2 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| Carbonate | 1 | 1 | 0.9 |
Cheo kinaonyesha ushahidi wa fasihi uliokusanywa, si sheria moja yenye mamlaka. Thibitisha kila mara dhidi ya mazingira ya sampuli yako.
Nyenzo zinazowezekana
| Nyenzo | Vilele vya usaidizi | Vikundi vinavyoingiliana | Vyanzo vilivyotajwa |
|---|---|---|---|
| polystyrene | 1484, 1020, 1600 | Methacrylate, Hydroxyl (O-H), Methoxy (OCH3) | 2 |
| PVP | 1484, 2983, 1648 | Hydroxyl (O-H), Methacrylate | 1 |
Nyenzo zinaonyeshwa tu wakati mkusanyiko sawa wa fasihi unaunga mkono bendi hii na angalau kilele kimoja cha ziada cha sifa.
Mantiki ya wigo
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 1484 cm⁻¹ is usually not enough for material identification by itself.
Matumizi ya ulimwengu halisi
Aina hii ya swala ni ya kawaida katika utambuzi wa polima, uchunguzi wa plastiki isiyojulikana, utatuzi wa shida za QC, uthibitishaji wa nyenzo zilizosindikwa, na ukaguzi wa ugawaji wa kilele unaoungwa mkono na fasihi.
Makosa ya kawaida
- Kuchukua bendi moja iliyotengwa kama uthibitisho wa nyenzo bila kuangalia angalau kilele kimoja au viwili vya usaidizi.
- Kupuuza mwingiliano: vikundi vingi vya utendaji vinaweza kuchangia karibu na nambari ya wimbi sawa.
- Kuruka uthibitishaji wakati viongezi, mchanganyiko, uoksidishaji, au uchafuzi unaweza kupotosha wigo.
Ushauri wa uthibitishaji.
Wakati utata unabaki, thibitisha nadharia kwa kutumia DSC, GC-MS, au TGA, hasa kwa mchanganyiko, sampuli zilizoharibika, na polima zilizojazwa.
Fasihi nyuma ya ugawaji huu
-
Alkene (C=C) uaminifu 1.0
“Band 3 2 cm-1 at 1484 could be ascribed to the C=C bonds.”
Synthesis, Optical, Chemical and Thermal Characterizations of PMMA-PS/CeO2 Nanoparticles Thin Film DOI: 10.3390/polym13071158 -
Ring structure uaminifu 1.0
“[43] 1484 C8-H coupled with a ring vibration of guanine 1484 ν(C=C)-diagnostic for the presence of a carotenoid structure, [44]”
Ghassemi 等 - 2021 - Diagnosis of normal and malignant human gastric ti DOI: 10.1016/j.molstruc.2020.129493 -
Amide uaminifu 1.0
“a cm-1 The bands at 1,700-1,600 are mostly attributed to the 1484 a amide I vibrations (the CO stretches of backbone amides), 14811476 b”
Takano 等 - 2008 - Herbicide effect on the hydrogen-bonding interacti DOI: 10.1007/s11120-008-9302-5 -
Alkyl C-H uaminifu 1.0
“The changes in cm-1 cm-1 changes in the band between 1484 and 1410 could have been due to aliphatic the band between 1484 cm-1 and 1410 cm-1 could have been due to aliphatic C-H deforC-H deformation, C-O stretching, and the O-H deformation”
Autopsy of Used Reverse Osmosis Membranes from the Largest Seawater Desalination Plant in Oman DOI: 10.3390/membranes12070671 -
Ring structure uaminifu 1.0
“adenosine and guanosine internal ring vibration gives rise to a peak at 1484 and at 1337 cm-1”
FTIR Spectroscopy to Reveal Lipid and Protein Changes Induced on Sperm by Capacitation: Bases for an Improvement of Sample Selection in ART DOI: 10.3390/ijms21228659 -
uaminifu 1.0
“Additionally, the peaks at 1484 and 1085 cm characteristic of the Raman spectrum of malachite, is consistent with the + CR M mixture up to 40% of M.”
Spectroscopic study of mixtures of green copper pigments in fresh and aged model samples. Case studies on masterpieces from the Spanish Golden Age DOI: 10.1016/j.culher.2022.12.004 -
uaminifu 1.0
“medium peak at 769 a strong peak at 947 as well as a weak peak at 1484 The cm-1 cm-1 peaks at ~520 and a broad band at 550-280 as well as the infrared absorption at cm-1 1484 were due to the infrared absorption by the Ca-O bond.”
Zaid 等 - 2017 - Effect of Sintering on Crystallization and Structu DOI: 10.2298/SOS1704409Z -
uaminifu 0.9
“Sharp PS-derived peak at 1484.”
Nanomechanical IR spectroscopy for fast analysis of liquid-dispersed engineered nanomaterials DOI: 10.1016/j.snb.2016.04.002
Una wigo wenye bendi hii?
Pakia wigo wako wa FTIR na upate ripoti kamili ya tafsiri — ugawaji wa vilele na marejeleo ya fasihi, ulinganishaji wa maktaba, na mlolongo wa ushahidi wenye kiwango cha uaminifu — kwa sekunde.