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Polysulfide utilization by Thiocapsa roseopersicina
Archives of Microbiology, 1990The purple sulfur bacterium Thiocapsa roseopersicina, being the dominant anoxygenic phototroph in microbial mats, was tested for growth on polysulfide as the electron donor for carbon dioxide fixation. Data collected in continuous cultures revealed μmax to be 0.065 h-1 and the saturation affinity constant K s to be 6.7 μM.
H. van Gemerden +2 more
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Hydrogen Sulfide and Polysulfide Signaling
Antioxidants & Redox Signaling, 2017Hydrogen sulfide (H2S) has been demonstrated to have physiological roles such as neuromodulation, vascular tone regulation, cytoprotection, oxygen sensing, inflammatory regulation, and cell growth. Recently, hydrogen polysulfides (H2Sn) have been found to be produced by 3-mercaptopyruvate sulfurtransferase and to regulate the activity of ion channels ...
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Advanced Materials, 2018
AbstractLithium–sulfur batteries are regarded as one of the most promising candidates for next‐generation rechargeable batteries. However, the practical application of lithium–sulfur (Li–S) batteries is seriously impeded by the notorious shuttling of soluble polysulfide intermediates, inducing a low utilization of active materials, severe self ...
Shuibin Tu +7 more
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AbstractLithium–sulfur batteries are regarded as one of the most promising candidates for next‐generation rechargeable batteries. However, the practical application of lithium–sulfur (Li–S) batteries is seriously impeded by the notorious shuttling of soluble polysulfide intermediates, inducing a low utilization of active materials, severe self ...
Shuibin Tu +7 more
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Synthesis and Properties of Amphiphilic Star Polysulfides
Macromolecular Bioscience, 2007AbstractWe here present the synthesis and characterisation of linear and star‐shaped amphiphilic block copolymers based on hydrophobic polysulfides (poly(propylene sulfide), PPS) and hydrophilic polyethers (poly(ethylene glycol), PEG). We also discuss the proof of the principle of their responsiveness to oxidising conditions.
Wang, Lei +2 more
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Advanced Energy Materials, 2019
Owing to its high theoretical specific capacity (1166 mA h g−1) and particularly its advantage to be paired with a lithium‐metal‐free anode, lithium sulfide (Li2S) is regarded as a much safer cathode for next‐generation advanced lithium–sulfur (Li–S ...
Jiarui He, Yuanfu Chen, A. Manthiram
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Owing to its high theoretical specific capacity (1166 mA h g−1) and particularly its advantage to be paired with a lithium‐metal‐free anode, lithium sulfide (Li2S) is regarded as a much safer cathode for next‐generation advanced lithium–sulfur (Li–S ...
Jiarui He, Yuanfu Chen, A. Manthiram
semanticscholar +1 more source
Chemistry Letters, 1987
Abstract Preparation of polysulfides containing spiroorthocarbonate structure in the main chain by the radical polyaddition of unsaturated spiroorthocarbonate, 2,7-dimethylene-1,4,6,9-tetra-oxaspiro[4.4]nonane, with dithiols is described.
Takeshi Endo, Hirotaka Tagoshi
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Abstract Preparation of polysulfides containing spiroorthocarbonate structure in the main chain by the radical polyaddition of unsaturated spiroorthocarbonate, 2,7-dimethylene-1,4,6,9-tetra-oxaspiro[4.4]nonane, with dithiols is described.
Takeshi Endo, Hirotaka Tagoshi
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Journal of Materials Chemistry A, 2019
A Ti3C2Tx MXene/rGO hybrid aerogel is applied for the first time as a free-standing polysulfide reservoir to inhibit the shuttle effect and improve the overall performance of Li–S batteries.
Jianjun Song +8 more
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A Ti3C2Tx MXene/rGO hybrid aerogel is applied for the first time as a free-standing polysulfide reservoir to inhibit the shuttle effect and improve the overall performance of Li–S batteries.
Jianjun Song +8 more
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Mechanism of Vulcanization of Polysulfide Rubbers
Rubber Chemistry and Technology, 1954Abstract This investigation was carried out to discover the terminal group present in polysulfide rubbers of the kind represented by Thiokol Type FA and the chemical reactions involved in the standard vulcanization recipe. Hydroxyl groups were found to be present as terminals on these polysulfide rubbers.
J. R. Panek, J. S. Jorczak, E. M. Fettes
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Organic Sulfides and Polysulfides. VI. Reactions of Metallic Oxides with Polysulfide Rubbers
Rubber Chemistry and Technology, 1958Abstract 1. Both mercaptides and disulfides were obtained by the reactions between benzyl mercaptan or tolyl mercaptan with zinc oxide or lead oxide. Qualitatively, mercaptides were formed from benzyl mercaptan easier than from tolyl mercaptan, and lead oxide reacted with mercaptan easier than zinc oxide with mercaptan.
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2001
Publisher Summary The compositional classification of polysulfides is based on three groups: the higher (hyperstoichiometric) polysulfides, RS2+x; stoichiometric disulfides, RS2.0; and lower (hypostoichiometric) polysulfides, RS2–x. The classification covers all known compounds with compositions varying in the range from RS2.67 to RS1.70. The methods
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Publisher Summary The compositional classification of polysulfides is based on three groups: the higher (hyperstoichiometric) polysulfides, RS2+x; stoichiometric disulfides, RS2.0; and lower (hypostoichiometric) polysulfides, RS2–x. The classification covers all known compounds with compositions varying in the range from RS2.67 to RS1.70. The methods
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