Hydroxyl (O-H) — FTIR-absorptions-toppe og tildelinger

Hurtigt svar

Hydroxyl (O-H) tildeles normalt ved at lede efter en tilbagevendende klynge af karakteristiske toppe frem for et præcist lærebogsnummer. Tabellen nedenfor viser, hvor litteraturen oftest placerer denne gruppe i FTIR, rangeret efter akkumuleret evidens.

Karakteristiske FTIR-toppe for Hydroxyl (O-H)

Viser de 30 bedst understøttede toppe ud af 1933 i alt for Hydroxyl (O-H).

Mulige materialer

Spektrumlogik

En funktionel gruppetildeling bliver mere sikker, når flere forventede bånd optræder sammen. Brug denne side til at finde de bedst understøttede peaks, og bekræft derefter, at den samme prøve udviser et sammenhængende mønster snarere end et enkelt isoleret hit.

Anvendelse i virkeligheden

Disse sider er nyttige til analyse af ukendte materialer, topforklaring i rapporter, polymerfejlfinding og verifikation af, om en kandidatmaterialefamilie er kemisk plausibel.

Almindelige fejl

• Brug af én funktionel-gruppe-side som en komplet materialebedømmelse uden at kontrollere resten af spektret.
• Antager, at det stærkeste bånd altid er det mest diagnostiske.
• At glemme, at forarbejdning, tilsætningsstoffer, ældning og blandinger kan flytte eller udvide forventede toppe.

Verifikationsrådgivning

Brug DSC, GC-MS eller TGA, når flere materialefamilier deler lignende bånd, eller når blandings-effekter gør FTIR-tildelingen usikker.

Litteratur bag disse tildelinger

• 3429 cm⁻¹ tillid 1,0

  “LLM confirmed rule peak-group candidate”

  Synthesis and Physical Properties Characterization of Montmorillonite-modified Carbon Nanotubes Filler DOI: 10.1088/1757-899X/546/4/042004
• 731 cm⁻¹ tillid 1,0

  “Unassociated hydroxyl peaks at 731 and 653 in Raman occurred in the compound”

  Quantum chemical studies and vibrational analysis of 4-acetyl benzonitrile, 4-formyl benzonitrile and 4-hydroxy benzonitrile – A comparative study DOI: 10.1016/j.saa.2012.08.053
• 3426 cm⁻¹ tillid 1,0

  “peak in absorption of 3425.6 which showed the 1033.8 While the variation of PA-2 and PA-5 presence of OH bonds.”

  Grafting of Oleic Acid On Cyclic Natural Rubber Resiprene-35 Using Dicumyl Peroxide Initiator and Divinylbenzene Compatibilizers For Paint Binder In Polyamide Thermoplastics DOI: 10.13005/ojc/350119
• 1625 cm⁻¹ tillid 1,0

  “The peak at 1625 in BC was due to OH Quetiapine fumarate at different pH's.”

  pH‐Responsive Studies of Bacterial Cellulose /Chitosan Hydrogels Crosslinked with Genipin: Swelling and Drug Release Behaviour DOI: 10.1002/slct.201902290
• 2925 cm⁻¹ tillid 1,0

  “The and near 2925cm-1 due to vibration of O-H and Cfucoidan standard has eight peaks the same as the H.”

  The Properties of Brown Marine Algae Sargassum turbinarioides and Sargassum ilicifolium Collected From Yogyakarta, Indonesia DOI: 10.14499/indonesianjpharm30iss1pp43
• 3409 cm⁻¹ tillid 1,0

  “The FTIR bands observed at 3409 and 1621 are due to the O-H stretching mode of hydroxyl group.”

  Synthesis and Characterization of Spindle-Like TiO2 Nanostructures and Photocatalytic Activity on Methyl Orange and Methyl Blue Dyes Under Sunlight Radiation DOI: 10.1007/s10876-017-1245-6
• 842 cm⁻¹ tillid 1,0

  “6observed in the wavenumber region 820-870 The investigation of peak profile of PF a band with octahedral symmetry (O h) of polymer salt system (Fig 8 a) suggests the presence of asymmetry in the characteristic band with cm-1 maxima at 842”

  Arya 等 - 2018 - Effect of variation of different nanofillers on st DOI: 10.1007/s11581-016-1784
• 1628 cm⁻¹ tillid 1,0

  “Fourier-Transform Infrared (FTIR) Spectroscopy cm-1, prominent peaks appeared at 1627.5 and 3350 representing N-H bond and hydroxyl The chemical and structural characteristics of nanocomposites, as well as their atomic bond stretching vibra”

  Electro-Oxidation of Metal Oxide-Fabricated Graphitic Carbon Nitride for Hydrogen Production via Water Splitting DOI: 10.3390/coatings12050548