Dimethyl Sulfoxide

Krapcho, A. Paul; Porcheddu, Andrea; Giacomelli, Giampaolo

doi:10.1002/047084289x.rd373.pub2

Cited by 2 publications

(2 citation statements)

References 101 publications

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“…Dimethyl sulfoxide (DMSO) [43] DMSO can undergo a disproportionation reaction to dimethyl sulfide and dimethyl sulfone at 90 °C. To us, it is not clear what could potentially happen after this step to cause membranes to have such a high ohmic re- Only membranes M(110) and M(135) show polarization curves that match the performance measured with a Nafion 115 membrane throughout most of the tested current density range.…”

Section: Solvent Reactionmentioning

confidence: 99%

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Self-Standing, Ultrasonic Spray-Deposited Membranes for Fuel Cells

et al. 2023

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The polymer electrolyte membrane and its contact with electrodes has a significant effect on the performance of fuel and electrolysis cells but the choice of commercially available membranes is limited. In this study, membranes for direct methanol fuel cells (DMFCs) were made by ultrasonic spray deposition from commercial Nafion solution; the effect of the drying temperature and presence of high boiling solvents on the membrane properties was then analyzed. When choosing suitable conditions, membranes with similar conductivity, water uptake, and higher crystallinity than comparable commercial membranes can be obtained. These show similar or superior performance in DMFC operation compared to commercial Nafion 115. Furthermore, they exhibit low permeability for hydrogen, which makes them attractive for electrolysis or hydrogen fuel cells. The findings from our work will allow for the adjustment of membrane properties to the specific requirements of fuel cells or water electrolysis, as well as the inclusion of additional functional components for composite membranes.

show abstract

Section: Solvent Reactionmentioning

confidence: 99%

“…Dimethyl sulfoxide (DMSO) [43] DMSO can undergo a disproportionation reaction to dimethyl sulfide and dimethyl sulfone at 90 • C. To us, it is not clear what could potentially happen after this step to cause membranes to have such a high ohmic resistance and the resulting CCM to perform poorly.…”

Section: Solvent Reactionmentioning

confidence: 99%

Self-Standing, Ultrasonic Spray-Deposited Membranes for Fuel Cells

et al. 2023

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Verification of oligomycin A structure: synthesis and biological evaluation of 33-dehydrooligomycin A

et al. 2017

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Although, the structure of oligomycin A (1) was confirmed by spectroscopic and chemical evaluations, some crystallographic data cast doubt on the originally adopted structure of the side 2-hydroxypropyl moiety of this antibiotic. It was suggested that the side chain of the oligomycin is enol-related (2-hydroxy-1-propenyl). To clarify this matter we synthesized and evaluated 33-dehydrooligomycin A (2) prepared by the Kornblum oxidation of 33-O-mesyloligomycin A (3) by dimethyl sulfoxide. NMR data for 33-dehydrooligomycin (2) and results of quantum chemical calculations have shown that this derivative exists in the keto rather than in the enol tautomer 2a. The in vitro antimicrobial activity of 2 was approximately two times weaker in comparison with oligomycin A against Streptomyces fradiae ATCC-19609 and reference Candida spp. strains and similar activity against certain filamentous fungi. The docking binding estimate of 2 with FFATP synthase showed a slight decrease in binding affinity for 2 when compared with oligomycin A; that correlated with its activity against S. fradiae ATCC 19609 that is supersensitive to oligomycin A. The in vitro antiproliferative activities of 2 are also discussed.

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Dimethyl Sulfoxide

Cited by 2 publications

References 101 publications

Self-Standing, Ultrasonic Spray-Deposited Membranes for Fuel Cells

Self-Standing, Ultrasonic Spray-Deposited Membranes for Fuel Cells

Verification of oligomycin A structure: synthesis and biological evaluation of 33-dehydrooligomycin A

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