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Updated: Jan 28, 2026

Purification and Reconstitution of TRPV1 for Spectroscopic Analysis
Published on: July 3, 2018
FTIR spectroscopic study of the interaction between NH4+ and DMSO in Nafion
A I Karelin1, R R Kayumov1, Yu A Dobrovolsky1
1Institute of Problems of Chemical Physics of RAS, 142432, 1 Academician Semenov Avenue, Chernogolovka, Moscow Region, Russia.
Abstract:
Nafion-NH4+ membranes plasticized with dimethyl sulfoxide (DMSO and DMSO-d6) have been investigated at room temperature using the vacuum ATR-FTIR and FTIR absorption spectroscopic technique in the range 50-4000 cm-1. The amount of the plasticizer corresponds to the molecular ratio n = DMSO/NH4+ = 2.7-13.8. The mutual association of free DMSO molecules in Nafion leads to appearance of weak band at 86 cm-1 assigned to dipole-dipole interactions. Also the Raman spectra of dry Nafion-NH4+ membranes were investigated.
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