Hvad absorberer ved 1075 cm⁻¹ i et FTIR-spektrum?
Et bånd nær 1075 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 1075 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) | 15 | 14 | 1,0 |
| Methacrylate | 15 | 14 | 1,0 |
| Acetate | 15 | 14 | 1,0 |
| C-O single bond | 15 | 14 | 1,0 |
| Silicon-oxygen (Si-O) | 12 | 12 | 1,0 |
| Silicon (Si) | 6 | 6 | 1,0 |
| Phosphate (PO4) | 5 | 5 | 1,0 |
| Hydroxyl (O-H) | 5 | 5 | 1,0 |
| Siloxane (Si-O-Si) | 5 | 5 | 1,0 |
| Alkyl C-H | 3 | 3 | 1,0 |
| Amide | 3 | 3 | 1,0 |
| Methyl | 2 | 2 | 1,0 |
| Secondary amine | 2 | 2 | 1,0 |
| C n single bond | 2 | 2 | 1,0 |
| N-O bond | 2 | 2 | 1,0 |
| Sulfate (SO4) | 2 | 2 | 1,0 |
| Carbohydrate | 2 | 2 | 1,0 |
| Phosphorus | 2 | 2 | 1,0 |
| C c single bond | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 1 | 1 | 1,0 |
| Sulfur | 1 | 1 | 1,0 |
| Lipid | 1 | 1 | 1,0 |
| Carbonate | 1 | 1 | 1,0 |
| C-S single bond | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Silanol (Si-OH) | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| Silicon nitrogen | 1 | 1 | 0,7 |
Rangering afspejler akkumuleret litteraturevidence, ikke en enkelt fast regel. Bekræft altid mod din prøvekontekst.
Mulige materialer
| Materiale | Understøttende toppe | Overlappende grupper | Citerede kilder |
|---|---|---|---|
| starch | 1075, 1650, 1540 | Methacrylate, Acetate, C-O single bond | 1 |
| Chitosan | 1075, 1650, 1655 | Acetate, Methacrylate, C-O single bond | 1 |
| gelatin | 1075, 1652, 3300 | Methacrylate, Acetate, C-O single bond | 1 |
| silver nanoparticles | 1075, 1636, 1631 | Methacrylate, Acetate, C-O single bond | 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 1075 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
-
Acetate tillid 1,0
“The ab1075cm-1 C-O rubber compound before adding curatives was measured by a Rubber sorption peak at is attributed to deformation of "Si-O-CH 3" Process Analyzer (RPA 2000) at 100°C and 0.5Hz frequency with 2CH and the intensity of the peak”
Reactive grafting of 3-octanoylthio-1-propyltriethoxysilane in styrene butadiene rubber_ Characterization and its effect on silica reinforced tire composites DOI: 10.1016/j.polymer.2019.121693 -
Silicon (Si) tillid 1,0
“In the present work, green synthesized silver nanoparticles were covalently immobilized on a glass surface topreventaggregationofnanoparticlesandtoenhancetheirapplicability.Fouriertransforminfrared(FTIR)ofsilvernanoparticle cm-1, cm-1, cm-1”
Development of sustainable and reusable silver nanoparticle-coated glass for the treatment of contaminated water DOI: 10.1007/s11356-019-05647-4 -
tillid 1,0
“10 shows a measurement that was performed ing cm-1 cm-1 the broad band between 1075 and 1175 resolved again after overnight exposure to air of >90% RH of a steel sample with (cid:4) to a asymmetric S O stretching vibration peak triplet.”
Simultaneous in situ Kelvin probe and Raman spectroscopy analysis of electrode potentials and molecular structures at polymer covered salt layers on steel DOI: 10.1016/j.electacta.2012.08.042 -
Acetate tillid 1,0
“The C-O-C 𝑐𝑚-1, stretching vibration appears at 1075.12 while the C-N stretches around 1311.35 𝑐𝑚-1 (Timotius et al., 2022).”
Timotius 等 - 2022 - The Study of Methylene Blue Loading into Chitosan- DOI: 10.14716/ijtech.v13i8.6133 -
tillid 1,0
“FTIR results showed that the reduction of Si-O-Si symmetric stretching vibrations cm-1 at 1075 was due to the use of a high percentage of gelatin.”
The effect of gelatin as pore expander in green synthesis mesoporous silica for methylene blue adsorption DOI: 10.1038/s41598-022-19615-5 -
Acetate tillid 1,0
“A significant decrease is evident cm(cid:0) cm(cid:0) 1, 1 (C-O) (C-O-C) in the bands at 1075 associated with v and 1152 equivalent to v glycosidic.”
Aguirre-Loredo 等 - 2023 - Improvements of thermal and mechanical properties DOI: 10.1016/j.heliyon.2023.e16782 -
Phosphate (PO4) tillid 1,0
“mode is centered at 1232 and the PO symmetric cm-1 2stretching mode PO at 1075 , these results are similar to previously reported results [25].”
Aisha 等 - 2014 - Preparation and characterization of nano liposomes DOI: 10.1155/2011/103039. -
C-O single bond tillid 1,0
“C-O-C stretch TEGDMA 1075 C-OH stretch HEMA 1100/1050”
Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy DOI: 10.3390/polym13223886
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.