Scaling Relation between Electrochemical Seebeck Coefficient for Fe2+/Fe3+ in Organic Solvent and Its Viscosity

2021 ◽  
Vol 90 (3) ◽  
pp. 033602
Author(s):  
Dai Inoue ◽  
Hideharu Niwa ◽  
Hiroaki Nitani ◽  
Yutaka Moritomo
Keyword(s):  
Organic Solvent ◽  
Seebeck Coefficient ◽  
Scaling Relation

The Effect of Solvent on the Seebeck Coefficient and Thermocell Performance of Cobalt Bipyridyl and Iron Ferri/Ferrocyanide Redox Couples

2019 ◽  
Vol 72 (9) ◽  
pp. 709 ◽  
Author(s):  
Abuzar Taheri ◽  
Douglas R. MacFarlane ◽  
Cristina Pozo-Gonzalo ◽  
Jennifer M. Pringle
Keyword(s):  
Organic Solvent ◽  
Seebeck Coefficient ◽  
Mixed Solvent ◽  
Waste Heat ◽  
Redox Couple ◽  
Seebeck Coefficients ◽  
Effect Of Solvent ◽  
Redox Couples ◽  
Ligand Interactions ◽  
Solvent Systems

The conversion of thermal energy to electricity using thermoelectrochemical cells (thermocells) is a developing approach to harvesting waste heat. The performance of a thermocell is highly dependent on the solvent used in the electrolyte, but the interplay of the various solvent effects is not yet well understood. Here, using the redox couples [Co(bpy)3][BF4]2/3 (bpy=2,2′-bipyridyl) and (Et4N)3/(NH4)4Fe(CN)6, which have been designed to allow dissolution in different solvent systems (aqueous, non-aqueous, and mixed solvent), the effect of solvent on the Seebeck coefficient (Se) and cell performance was studied. The highest Se for a cobalt-based redox couple measured thus far is reported. Different trends in the Seebeck coefficients of the two redox couples as a function of the ratio of organic solvent to water were observed. The cobalt redox couple produced a more positive Se in organic solvent than in water, whereas addition of water to organic solvent resulted in a more negative Se for Fe(CN)6 3−/4−. UV-vis and IR investigations of the redox couples indicate that Se is affected by changes in solvent–ligand interactions in the different solvent systems.

Nematic Ordering Driven by Atomic-scale Multipoles

2021 ◽  
Vol 1 ◽  
Author(s):  
Satoru Hayami
Keyword(s):  
Organic Solvent ◽  
Seebeck Coefficient ◽  
Viscosity Coefficient ◽  
Atomic Scale ◽  
Nematic Ordering ◽  
Redox Pair ◽  
Empirical Rule

We found a beautiful empirical rule (α ∝ <em>η</em><sup>-0.4</sup>) between the electrochemical Seebeck coefficient <em>α</em> for Fe<sup>2+</sup>/Fe<sup>3+</sup> redox pair and viscosity coefficient <em>η</em> of the organic solvent.

A Solvent Viscosity-dependent Thermoelectric Conversion Efficiency

2021 ◽  
Keyword(s):  
Organic Solvent ◽  
Seebeck Coefficient ◽  
Conversion Efficiency ◽  
Viscosity Coefficient ◽  
Solvent Viscosity ◽  
Thermoelectric Conversion ◽  
Redox Pair ◽  
Empirical Rule

We found a beautiful empirical rule (α ∝ <em>η</em><sup>-0.4</sup>) between the electrochemical Seebeck coefficient <em>α</em> for Fe<sup>2+</sup>/Fe<sup>3+</sup> redox pair and viscosity coefficient <em>η</em> of the organic solvent.

Descriptor of Thermogalvanic Cell for Waste-heat Harvesting

2021 ◽  
Vol 1 ◽  
Author(s):  
Masashi Okubo
Keyword(s):  
Seebeck Coefficient ◽  
Waste Heat ◽  
Scaling Relation ◽  
Solvent Viscosity ◽  
Thermogalvanic Cell ◽  
Waste Heat Harvesting

The scaling relation between the Seebeck coefficient and solvent viscosity would enable for the design of improved thermogalvanic cells.

STUDIES ON A NON-MELATONIN PINEAL ANTI-GONADOTROPHIN

1972 ◽  
Vol 69 (2) ◽  
pp. 257-266 ◽  
Author(s):  
Bryant Benson ◽  
Mary Jane Matthews ◽  
Alvin E. Rodin
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Pineal Gland ◽  
Gel Filtration ◽  
Test System ◽  
Pineal Body ◽  
Physiological Effects ◽  
Organic Solvent Extraction ◽  
Gland Function

ABSTRACT Continuing investigation of pineal gland function indicates that the anti-gonadotrophic activity of this organ cannot be attributed solely to the postulated hormone melatonin, the concentration of which is negligible in the pineal body compared to quantities required to produce unequivocal physiological effects. A non-melatonin antigonadotrophic substance recently isolated from bovine pineal glands was further purified by organic solvent extraction, ultrafiltration and gel filtration. Studies of partial blockage of compensatory ovarian hypertrophy in unilaterally ovariectomized Charles River CD-1 mice indicated that this substance is significantly more potent than melatonin in this test system.

Organic Solvent-Free Reworkable Photocrosslinking System

2007 ◽  
Vol 2 (2) ◽  
pp. 303-306
Author(s):  
Haruyuki Okamura ◽  
Yoshimi Tajima ◽  
Tadahiro Ohba ◽  
Kanji Suyama ◽  
Masamitsu Shirai
Keyword(s):  
Organic Solvent ◽  
Solvent Free
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