Hvad absorberer ved 1062 cm⁻¹ i et FTIR-spektrum?
Et bånd nær 1062 cm⁻¹ kan pege på flere funktionelle grupper. Nedenfor er de mest sandsynlige tildelinger, rangeret efter hvor meget publiceret bevis der understøtter hver — hver enkelt spores til litteratur (DOI) og krydsvalideres mod vores 130.000+ referencespektre og vidensgraf.
Backed by 8 cited sources
Hurtigt svar
Et bånd nær 1062 cm⁻¹ fortolkes normalt ved at kontrollere, hvilke funktionelle grupper der gentagne gange forekommer der i litteraturen, og derefter bekræfte mindst en eller to yderligere peaks i den samme prøve. Denne side rangerer disse tildelinger efter akkumuleret evidens snarere end efter en enkelt fast lærebogsregel.
Mulige funktionelle gruppetildelinger
| Funktionel gruppe | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| Methoxy (OCH3) | 12 | 12 | 1,0 |
| Methacrylate | 12 | 12 | 1,0 |
| Acetate | 12 | 12 | 1,0 |
| C-O single bond | 11 | 11 | 1,0 |
| Alkyl C-H | 5 | 5 | 1,0 |
| Amide | 4 | 4 | 1,0 |
| Carbohydrate | 3 | 2 | 1,0 |
| Methyl | 2 | 2 | 1,0 |
| Secondary amine | 2 | 2 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Chitosan | 2 | 2 | 1,0 |
| Phosphate (PO4) | 2 | 2 | 1,0 |
| Aromatic ring | 2 | 2 | 1,0 |
| Siloxane (Si-O-Si) | 2 | 2 | 1,0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| Thiocarbonyl | 1 | 1 | 1,0 |
| Ring structure | 1 | 1 | 1,0 |
| Protein | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| N h | 1 | 1 | 0,6 |
Rangering afspejler akkumuleret litteraturevidence, ikke en enkelt fast regel. Bekræft altid mod din prøvekontekst.
Mulige materialer
| Materiale | Understøttende toppe | Overlappende grupper | Citerede kilder |
|---|---|---|---|
| cellulose | 1062, 1735, 1650 | Acetate, Methacrylate, C-O single bond | 1 |
| hemicellulose | 1062, 1730, 897 | Methacrylate, Acetate, C-O single bond | 1 |
| Chitosan | 1062, 1650, 1655 | Acetate, Methacrylate, C-O single bond | 1 |
| TiO2 | 1062, 1700, 1093 | Methacrylate, Acetate, C-O single bond | 1 |
| cotton | 1062, 1030, 1638 | Methacrylate, Acetate, C-O single bond | 1 |
| TiO2 nanoparticles | 1062, 1700, 455 | Methacrylate, C-O single bond, Acetate | 1 |
Materialer vises kun, når den samme litteraturpulje understøtter dette bånd og mindst en yderligere karakteristisk top.
Spektrumlogik
Dette bånd bliver meningsfuldt kun, når det læses sammen med sine nabotoppe. I praksis ser analytikere først på tildelingerne ovenfor, og kontrollerer derefter, om den samme prøve også viser andre toppe, der forventes for det samme strukturelle motiv. Et enkelt bånd nær 1062 cm⁻¹ er normalt ikke nok til materialeidentifikation alene.
Anvendelse i virkeligheden
Denne type forespørgsel er almindelig ved polymeridentifikation, screening af ukendt plast, fejlfinding i kvalitetskontrol, verifikation af genanvendt materiale og litteraturunderstøttet gennemgang af peak-tildeling.
Almindelige fejl
- Behandling af et isoleret bånd som bevis på et materiale uden at kontrollere mindst en eller to understøttende toppe.
- Ignorerer overlap: flere funktionelle grupper kan bidrage nær samme bølgetal.
- Spring validering over, når additiver, blandinger, oxidation eller forurening kan forvrænge spektret.
Verifikationsrådgivning
Når tvetydighed fortsat består, valider hypotesen med DSC, GC-MS eller TGA, især for blandinger, nedbrudte prøver og fyldte polymerer.
Litteratur bag disse tildelinger
-
Alkyl C-H tillid 1,0
“cm-1 and 1635 due to stretching vibrations of O-H group, the bands assigned at 3275 cmcm-1, - 1 the band at 2922 due to vibrations of C H stretching thee band at 1213 1062cm-1,482cm-1,576cm-1,1535cm-1arethefollowingvibrationsC-Ostretching,N”
Bio-engineered TiO2 nanoparticles using Ledebouria revoluta extract: Larvicidal, histopathological, antibacterial and anticancer activity DOI: 10.1080/03067319.2020.1718668 -
Acetate tillid 1,0
“cm-1 cm-1 Previous studies had reported that the C-O is stretching at 1062 and 1220 and no NCO absorption at 2270 were observed showing that the reaction was complete [16].”
Preparation of one-shot and two-shot method of semi-rigid polyurethane film based on functionalized liquid natural rubber DOI: 10.1063/1.5047200 -
Metal oxygen tillid 1,0
“The peak observed at ~1062 is due to cm-1 the Ce-O group with a larger double bond nature [74].”
Oxygen vacancies and F+ centre tailored room temperature ferromagnetic properties of CeO2 nanoparticles with Pr doping concentrations and annealing in hydrogen environment DOI: 10.1016/j.jallcom.2020.156079 -
tillid 1,0
“All spectra were background subcm-1 Si-O-Si 29Si{1H} The experimental details for the CP-MAS NMR for tracted and normalized to the peak at 1062 cm-1 29Si, experiments were as follows: C.”
La Vars 等 - 2013 - Si-29{H-1} CP-MAS NMR comparison and ATR-FTIR spec DOI: 10.1007/s00216-013-6746-z -
Carbohydrate tillid 1,0
“Similarly, the stretching and broadening of 3434cm(cid:1)1) ORCID polysaccharide peaks (1062, 1177 and”
Saba 等 - 2019 - Potential role of bacterial extracellular polymeri DOI: 10.1080/10889868.2019.1602107 -
Acetate tillid 1,0
“The band cm-1 cm-1 at 1062 is related to the vibration of C-O-C glycosidic linkage of the cellulose.”
Cheng 等 - 2018 - A new approach to improve mechanical properties an DOI: 10.1016/j.conbuildmat.2018.05.134 -
Protein tillid 1,0
“With increasing temperatures, the spectrum of the contaminated collagen samplewhich is similar to the blank at 60 °C and 100 °C-shows an increasingly large band at 1062 cm-1, in which some shoulders can be identified as corresponding to the”
D'Elia 等 - 2007 - Evaluation of possible contamination sources in th DOI: 10.1017/S0033822200042120 -
Acetate tillid 1,0
“Peaks 1069 cm-1, cm-1 1062 and 1058 indicate C-O vibrational stretching of chitosan [23-29].”
Hydrothermal Synthesis of Chitosan and Tea Tree Oil on Plain and Satin Weave Cotton Fabrics DOI: 10.3390/ma15145034
Har du et spektrum med dette bånd?
Upload dit FTIR-spektrum og få en fuld fortolkningsrapport — peak-tildelinger med litteraturhenvisninger, biblioteksmatch og en litteraturunderstøttet analyse — på få sekunder.