Sulfonyl — FTIR-absorptions-toppe og tildelinger

Hurtigt svar

Sulfonyl 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 Sulfonyl

Viser de 30 bedst understøttede toppe ud af 35 i alt for Sulfonyl.

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

• 1035 cm⁻¹ tillid 1,0

  “FTIR showed peak at 26 cm-1 1035 which corresponded to O=S=O stretching of sulphonic (-SO 3H) group.”

  Balan 等 - 2021 - Esterification of residual palm oil using solid ac DOI: 10.1016/j.jtice.2012.07.001.
• 1651 cm⁻¹ tillid 1,0

  “Meanwhile, the presence of the peak at the 1651 cm-1, were assigned asymmetric O=S=O sulfonic group in SPEEK was confirmed by the sharp peak at 1024.13 cm-1, which were stretching vibration.”

  Hasbullah 等 - 2016 - Synthesis and Characterizations of Electrospun Sul DOI: 10.1063/1.4948867
• 1020 cm⁻¹ tillid 1,0

  “cm-1 cm-1 new bands at 1020 and 1080 can be attributed to the asymmetric and symmetric stretching of the O=S=O group [17,22,23].”

  Vibrational spectroscopic study of pure and silica-doped sulfonated poly(ether ether ketone) membranes DOI: 10.1016/j.saa.2014.12.004
• 1320 cm⁻¹ tillid 1,0

  “1406.20 3 C=C 1406.37 1406.20 asymmetric O=S=O stretching of sulfone group 1320.34 and 1297.21 1320.22 and 1297.15 4 asymmetric O=S=O stretch5 C-O-C 1238.25”

  Suhalim 等 - 2023 - Impact of Silver-Decorated Graphene Oxide (Ag-GO) DOI: 10.3390/membranes13060602
• 975 cm⁻¹ tillid 1,0

  “The symmetric symmetric and asymmetric S(=O) stretching vibration and asymmetric O=S=O stretching vibration peaks are 2 peaks and S-N-C absorptions, which appears at 975 cm-1, located at 1180 and 1359 respectively.”

  Tosa 等 - 2012 - Simultaneous Determination Of Some Artificial Swee DOI: 10.1063/1.3681976
• 1021 cm⁻¹ tillid 1,0

  “adsorption peak due to C-O stretching at 1105 By comparing spectra of polymer blend membrane with that for GA-cross-linked PVA membrane, new absorption bands are cm-1 noticed at 1021 and 1112 due to the symmetric and asymmetric O=S=O stretc”

  Highly Conductive Polyelectrolyte Membranes Poly(vinyl alcohol)/Poly(2-acrylamido-2-methyl propane sulfonic acid) (PVA/PAMPS) for Fuel Cell Application DOI: 10.3390/polym13162638
• 1255 cm⁻¹ tillid 1,0

  “FTIR spectra of potato starch (1) and sodium salt of sulfated starch (2) In the FTIR spectra of sulfated starch, in contrast to the original starch, there is a highcm-1, intensity band at 1255 which belongs to asymmetric stretching vibratio”

  Akman 等 - 2020 - Synthesis and characterization of starch sulfates DOI: 10.1016/j.carbpol.2012.07.075
• 1030 cm⁻¹ tillid 1,0

  “The LOD and aliphatic lactam 1767cm-1, 1030cm-1 υ and (O=S=O) band at and the LOQ values were determined from the linear calibration 1124cm-1.”

  Ali 等 - 2017 - Solid-State FTIR Spectroscopic Study of Two Binary DOI: 10.1155/2017/5673214