Academic literature on the topic 'Polysulfides'

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Journal articles on the topic "Polysulfides"

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Goifman, A., D. Ryzkov, J. Gun, A. Kamyshny, A. D. Modestov, and O. Lev. "Inorganic polysulfides’ quantitation by methyl iodide derivatization: dimethylpolysulfide formation potential." Water Science and Technology 49, no. 9 (May 1, 2004): 179–84. http://dx.doi.org/10.2166/wst.2004.0565.

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Inorganic polysulfides are important intermediates in the formation of dimethylpolysulfides and possibly other volatile sulfur compounds of environmental significance. Currently, direct determination of these ions in the concentration range of natural systems is practically impossible, particularly under oxic conditions. Polysulfide quantification by derivatization with methyl iodide or d6-methyl iodide is emerging as a valuable alternative method for studies of polysulfide formation in natural systems. This manuscript presents detailed studies aimed at the evaluation of this method. We determined the conversion of the inorganic polysulfides to dimethylpolysulfides by methylation with methyl iodide. Close to 100 per cent of the molar concentration of polysulfide salts were converted to organic polysulfides for very low concentrations of dissolved polysulfide solutions, but only a small recovery was obtained for high concentrations of polysulfide precursors or when the solubility limit was exceeded. The recovery of polysulfides based on the calculated dissolved polysulfide concentration exceeds 1,000 per cent for very low dissolved concentrations of polysulfides. This unexpected dependence is attributed to continuous inorganic polysulfide formation from hydrogen sulfide and sulfur precipitate concurrent with, and in fact driven by, the methylation process.
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Xu, Jing, Dawei Su, Wenxue Zhang, Weizhai Bao, and Guoxiu Wang. "A nitrogen–sulfur co-doped porous graphene matrix as a sulfur immobilizer for high performance lithium–sulfur batteries." Journal of Materials Chemistry A 4, no. 44 (2016): 17381–93. http://dx.doi.org/10.1039/c6ta05878g.

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The combination of the physical adsorption of lithium polysulfides onto porous graphene and the chemical binding of polysulfides to N and S sites promotes reversible Li2S/polysulfide/S conversion, realizing high performance Li–S batteries with long cycle life and high-energy density.
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Braunstein, Ilana, Rotem Engelman, Ofer Yitzhaki, Tamar Ziv, Erwan Galardon, and Moran Benhar. "Opposing effects of polysulfides and thioredoxin on apoptosis through caspase persulfidation." Journal of Biological Chemistry 295, no. 11 (February 10, 2020): 3590–600. http://dx.doi.org/10.1074/jbc.ra119.012357.

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Hydrogen sulfide has been implicated in a large number of physiological processes including cell survival and death, encouraging research into its mechanisms of action and therapeutic potential. Results from recent studies suggest that the cellular effects of hydrogen sulfide are mediated in part by sulfane sulfur species, including persulfides and polysulfides. In the present study, we investigated the apoptosis-modulating effects of polysulfides, especially on the caspase cascade, which mediates the intrinsic apoptotic pathway. Biochemical analyses revealed that organic or synthetic polysulfides strongly and rapidly inhibit the enzymatic activity of caspase-3, a major effector protease in apoptosis. We attributed the caspase-3 inhibition to persulfidation of its catalytic cysteine. In apoptotically stimulated HeLa cells, short-term exposure to polysulfides triggered the persulfidation and deactivation of cleaved caspase-3. These effects were antagonized by the thioredoxin/thioredoxin reductase system (Trx/TrxR). Trx/TrxR restored the activity of polysulfide-inactivated caspase-3 in vitro, and TrxR inhibition potentiated polysulfide-mediated suppression of caspase-3 activity in situ. We further found that under conditions of low TrxR activity, early cell exposure to polysulfides leads to enhanced persulfidation of initiator caspase-9 and decreases apoptosis. Notably, we show that the proenzymes procaspase-3 and -9 are basally persulfidated in resting (unstimulated) cells and become depersulfidated during their processing and activation. Inhibition of TrxR attenuated the depersulfidation and activation of caspase-9. Taken together, our results reveal that polysulfides target the caspase-9/3 cascade and thereby suppress cancer cell apoptosis, and highlight the role of Trx/TrxR-mediated depersulfidation in enabling caspase activation.
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Yu, Xingwen, and Arumugam Manthiram. "A class of polysulfide catholytes for lithium–sulfur batteries: energy density, cyclability, and voltage enhancement." Physical Chemistry Chemical Physics 17, no. 3 (2015): 2127–36. http://dx.doi.org/10.1039/c4cp04895d.

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Chauvin, Jean-Philippe R., Evan A. Haidasz, Markus Griesser, and Derek A. Pratt. "Polysulfide-1-oxides react with peroxyl radicals as quickly as hindered phenolic antioxidants and do so by a surprising concerted homolytic substitution." Chemical Science 7, no. 10 (2016): 6347–56. http://dx.doi.org/10.1039/c6sc01434h.

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Chang, Caiyun, and Xiong Pu. "Revisiting the positive roles of liquid polysulfides in alkali metal–sulfur electrochemistry: from electrolyte additives to active catholyte." Nanoscale 11, no. 45 (2019): 21595–621. http://dx.doi.org/10.1039/c9nr07416c.

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Yin, Shujun, Chenhui Wei, and Dongqiang Zhu. "Surface quinone-induced formation of aqueous reactive sulfur species controls pine wood biochar-mediated reductive dechlorination of hexachloroethane by sulfide." Environmental Science: Processes & Impacts 22, no. 9 (2020): 1898–907. http://dx.doi.org/10.1039/d0em00307g.

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Olson, Kenneth R., Yan Gao, and Karl D. Straub. "Oxidation of Hydrogen Sulfide by Quinones: How Polyphenols Initiate Their Cytoprotective Effects." International Journal of Molecular Sciences 22, no. 2 (January 19, 2021): 961. http://dx.doi.org/10.3390/ijms22020961.

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We have shown that autoxidized polyphenolic nutraceuticals oxidize H2S to polysulfides and thiosulfate and this may convey their cytoprotective effects. Polyphenol reactivity is largely attributed to the B ring, which is usually a form of hydroxyquinone (HQ). Here, we examine the effects of HQs on sulfur metabolism using H2S- and polysulfide-specific fluorophores (AzMC and SSP4, respectively) and thiosulfate sensitive silver nanoparticles (AgNP). In buffer, 1,4-dihydroxybenzene (1,4-DB), 1,4-benzoquinone (1,4-BQ), pyrogallol (PG) and gallic acid (GA) oxidized H2S to polysulfides and thiosulfate, whereas 1,2-DB, 1,3-DB, 1,2-dihydroxy,3,4-benzoquinone and shikimic acid did not. In addition, 1,4-DB, 1,4-BQ, PG and GA also increased polysulfide production in HEK293 cells. In buffer, H2S oxidation by 1,4-DB was oxygen-dependent, partially inhibited by tempol and trolox, and absorbance spectra were consistent with redox cycling between HQ autoxidation and H2S-mediated reduction. Neither 1,2-DB, 1,3-DB, 1,4-DB nor 1,4-BQ reduced polysulfides to H2S in either 21% or 0% oxygen. Epinephrine and norepinephrine also oxidized H2S to polysulfides and thiosulfate; dopamine and tyrosine were ineffective. Polyphenones were also examined, but only 2,5-dihydroxy- and 2,3,4-trihydroxybenzophenones oxidized H2S. These results show that H2S is readily oxidized by specific hydroxyquinones and quinones, most likely through the formation of a semiquinone radical intermediate derived from either reaction of oxygen with the reduced quinones, or from direct reaction between H2S and quinones. We propose that polysulfide production by these reactions contributes to the health-promoting benefits of polyphenolic nutraceuticals.
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Xu, Guiyin, Qing-bo Yan, Shitong Wang, Akihiro Kushima, Peng Bai, Kai Liu, Xiaogang Zhang, Zilong Tang, and Ju Li. "A thin multifunctional coating on a separator improves the cyclability and safety of lithium sulfur batteries." Chemical Science 8, no. 9 (2017): 6619–25. http://dx.doi.org/10.1039/c7sc01961k.

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Trummer, Modesta, Erwan Galardon, Anita Fischer, Stefan Toegel, Bernhard-Michael Mayer, Guenter Steiner, and Burkhard Kloesch. "Characterization of the Inducible and Slow-Releasing Hydrogen Sulfide and Persulfide Donor P*: Insights into Hydrogen Sulfide Signaling." Antioxidants 10, no. 7 (June 29, 2021): 1049. http://dx.doi.org/10.3390/antiox10071049.

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Hydrogen sulfide (H2S) is an important mediator of inflammatory processes. However, controversial findings also exist, and its underlying molecular mechanisms are largely unknown. Recently, the byproducts of H2S, per-/polysulfides, emerged as biological mediators themselves, highlighting the complex chemistry of H2S. In this study, we characterized the biological effects of P*, a slow-releasing H2S and persulfide donor. To differentiate between H2S and polysulfide-derived effects, we decomposed P* into polysulfides. P* was further compared to the commonly used fast-releasing H2S donor sodium hydrogen sulfide (NaHS). The effects on oxidative stress and interleukin-6 (IL-6) expression were assessed in ATDC5 cells using superoxide measurement, qPCR, ELISA, and Western blotting. The findings on IL-6 expression were corroborated in primary chondrocytes from osteoarthritis patients. In ATDC5 cells, P* not only induced the expression of the antioxidant enzyme heme oxygenase-1 via per-/polysulfides, but also induced activation of Akt and p38 MAPK. NaHS and P* significantly impaired menadione-induced superoxide production. P* reduced IL-6 levels in both ATDC5 cells and primary chondrocytes dependent on H2S release. Taken together, P* provides a valuable research tool for the investigation of H2S and per-/polysulfide signaling. These data demonstrate the importance of not only H2S, but also per-/polysulfides as bioactive signaling molecules with potent anti-inflammatory and, in particular, antioxidant properties.
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Dissertations / Theses on the topic "Polysulfides"

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Maher, Denise C. (Denise Christine). "Studies towards the synthesis of superhindered polysulfides." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59552.

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Various methods of synthesizing the novel, highly congested bis(tris(trimethylsilyl)methyl) disulfide (2) were investigated.
It was found that the oxidation of tris(trimethylsilyl)methyl mercaptan (1) with iodine in the presence of sodium methoxide affords a product whose $ sp{13}$C, $ sp1$H and combustion data are consistent with its structure being that of 2. In another attempt at the preparation of 2, tris(trimethylsilyl) methane with methyl lithium, elemental sulfur and iodine gave rise to 2 unanticipated products, believed to be bis(trimethylsilyl)methyl, tris(trimethylsilyl)methyl disulfide (3a) and bis(tris(trimethylsilyl)methyl) trisulfide (3c).
Furthermore, trisulfide 3c was subsequently prepared by the sulfuration of 1 using SCl$ sb2$ or N,N-thiobisbenzimidazole. In addition to thiol 1, both 3c and 2 exhibited unanticipated multiplicity of $ sp{13}$C NMR peaks in the silyl region of the spectrum. As a result, efforts were made to explain these results by molecular mechanics calculations on the thiol, trisulfide and disulfide structures.
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Mahon, Andrea. "Linear polysulfides : their characterisation and degradation pathways." Thesis, University of Warwick, 1996. http://wrap.warwick.ac.uk/3498/.

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Linear polysulfides (LPs) are widely used in high performance sealants. The typical structure of the polymer is: H(SC2H40CH2OC2H4S)nH. We have completely characterised the complex components that make up commercially used LPs, by means of electrospray ionisation mass spectrometry (ESI- MS), combined with collision induced dissociation (CID). ESI has proved to be an invaluable mass spectroscopic technique in the characterisation of linear polysulfides. The individual spectra are well-resolved, enabling conclusions to be reached about the presence of variant mers (usually associated with additional oxymethylene or oxyethylene units or a monosulfide linkage, or some combination of these), and about the identity of end-groups and nature of the repeat unit. We have also been able to use ESI-MS to study the degradation reactions of LP pre-polymers. We have obtained spectra of LPs using matrix assisted laser desorption ionisation time-of-flight mass spectrometry, MALDI-TOF-MS), but these are not as informative as spectra obtained by ESI-MS. Field desorption mass spectrometry (FD-MS) has also been successful in characterising LP samples, but this technique is less generally accessible and much more time-consuming than either ESI-MS or MALDI-TOF-MS. LPs degrade thermally and photochemically by two competing degradation pathways: i) a free radical autoxidation mechanism, and ii) a hydrolysis mechanism. UV photolysis or pyrolysis of LP pre-polymers in the presence of air or oxygen resulted in the development of carbonyl groups detectable by IR and 13C NMR spectroscopy, while 2-D NMR studies and the highly characteristic field positions of the NMR resonances show the carbonyl group to be due to a formate ester. All thin film samples of cured LP, irrespective of the LP structure and curing agent, including ZL-2264 (with an extra CH2 linkage in the repeat unit), also produce this carbonyl absorption at 1725 cm-1 when exposed to UV irradiation. The formate ester arises as a result of a conventional free radical mechanism of autoxidation; attack at the C-H bond adjacent to the ether oxygen atom leads to a hydroperoxide and hence an alkoxyl radical, followed by scission to give the formate ester. The study of liquid exudates formed when TBBP- and HDDA- cured LP cast blocks are exposed to prolonged periods of heat or UV irradiation also show the development of carbonyl bands at 1724 cm-1 in their IR spectra, again indicating that degradation is occurring at least in part via a free radical mechanism. ESI-MS studies of degraded pre-polymer samples and liquid exudates show that, in parallel with the degradation route involving oxygenation of a methylene group, there is a hydrolysis mechanism involving initial cleavage of the formal group to release formaldehyde, followed by secondary reactions to give other products detected in the ESI-MS spectrum of the photolysate/pyrolysate. This mechanism is supported by the extremely slow degradation of ZL-2264, which has no formal group. The hydrolysis mechanism is the principal route for the degradation of LP pre- polymers and TBHP- and HDDA- cured LP block samples, while LPs cured using MnO2 and NaB03 degrade almost exclusively via the free radical autoxidation pathway.
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D'Arcy, Richard. "Macromolecular engineering for modulating the response of oxidation-sensitive polymers." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/macromolecular-engineering-for-modulating-the-response-of-oxidationsensitive-polymers(cb5f7eb6-b29e-4453-9c40-1d24b1b838f3).html.

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In this thesis the primary focus is on polysulfides, a class of oxidation-responsive polymers with potential biomedical applications as 1) polymeric anti-inflammatory/anti-oxidant agents and/or 2) drug delivery vehicles, specifically for inflammation and cancer. Within the Tirelli lab, polysulfides for inflammation targeting drug delivery are a key area of research and as such a comprehensive review of this topic is covered in Chapter 1. Polysulfides are able to target inflammation (and cancer) due to their inherent ability to react with reactive oxygen species (ROS) such as hydrogen peroxide (H2O2) and hypochlorite (ClO-) which are markedly upregulated in inflamed and cancerous milieu; in Chapter 2 we demonstrate the different effects of these two oxidants on poly(propylene sulfide) (PPS) nanoparticles. Using diffusion-ordered NMR spectroscopy (DOSY), both size and spatial characteristics of the oxidation products were probed; specifically, the size of the oxidation products and the spatial location of Pluronic i.e. physically entrapped within the polysulfide core or ‘free’ Pluronic micelles. We additionally showed that these nanoparticles displayed a protective effect on both L929 fibroblasts and J774.2 macrophages when challenged with ClO-. In Chapter 3, micellar PEG-PPS composed of linear- (2-arm) or star-(4, 6 and 8 arm)shaped polymers were synthesised; we found micelles formed of the linear PEG-PPS reacted with H2O2 at a quicker rate than the star PEG-PPS, however, the critical micelle concentration of the stars was significantly lower indicating a marked increase in stability to dilution. Chapter 5 aimed to assess new monomer ethylene sulfide (ES), which was copolymerised with propylene sulfide (PS) and end-capped with PEG vinyl sulfone; the resulting PEG-P(PS-ES) copolymers were found to have a gradient composition due to the greater reactivity of ES. The rate of oxidation with the PEG-P(PS-ES) micelles (1:1 monomer composition) was ~2x faster with respect to PEG-PPS. The effect of primary structure on oxidation and gelation was evaluated using copolymers with various ES/PS gradients; there was little effect on oxidation kinetics, however, high ES gradients displayed significantly lower gel points; we ascribe this to the higher ES-ES association in polymers with longer ES sequences. Chapter 4 investigated the Mitsunobu reaction as a means to functionalize PEG-OH with a variety of commonly used (bio)conjugation groups (thiol, maleimide, azide and amine). This project arose when synthesising PEG-thioacetate as a potential macroinitiator for the polymerisation of PS/ES. Currently, the Mitsunobu reaction is scarcely used for the functionalization of PEG-OH but here we demonstrate its benefits over other commonly used functionalization methods; namely, it being a quantitative and high-yielding one-pot synthesis reaction.
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Arbach, Miriam. "Diallyl polysulfides from garlic : mode of action and applications in agriculture." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/50025/.

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Garlic (Allium sativum) contains a wide range of organosulfur compounds which show a variety of biological effects including broad spectrum antibacterial, antifungal and antiviral activity, as well as selective anticancer activity. One highly bioactive class of compounds from garlic are diallyl polysulfides (DAS), containing one to six sulfur atoms in a linear chain. The bioactivity of DAS has been shown to increase with increasing sulfur chain length up to DAS4 and in this study the even higher bioactivity of DAS5 and DAS6 was demonstrated. The bioactivity of DAS is believed to be initiated following initial reaction with intracellular low molecular weight (LMW) and protein thiols. In this study the interaction between DAS and LMW thiols was investigated and for the first time the reduced DAS metabolites allyl hydropolysulfides have been detected in vitro and in vivo in the Gram positive bacterium Bacillus subtilis. Additionally, formation of mixed polysulfides between DAS and LMW thiols with up to five sulfur atoms was observed in vitro. Proteomic studies revealed a large number of proteins in B. subtilis that formed mixed di- and trisulfides with DAS. Therefore multiple points of DAS attack have been proven and the disturbance of the cellular redox status through lowering the pool of reduced LMW thiols was established in two different organisms (B. subtilis and the nematode Steinernema feltiae). To exploit the polysulfide chemistry for the development of a “green” nematicide, the nematicidal activity of DAS was investigated in bioassays as well as the efficacy of DAS formulations towards plant pathogenic nematodes (Meloidogyne spp. and Globodera spp.) in potato and carrot field trials. It was demonstrated that the DAS derived nematicides form an equally effective alternative compared to synthetic nematicides at a much lower environmental and health risk.
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Jankulár, Tomáš. "Příprava a charakterizace elektrodových materiálů z elementární síry pro Li-ion akumulátory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220240.

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This thesis deals with the preparation and characterization of electrode materials for Li-ion batteries based on elemental sulfur. The theoretical part is focused on the characteristics of Li-ion batteries, electrochemical reactions, the process of electrochemical lithiation of sulfur and solubility properties of intermediate polysulfides. The practical part of the thesis deals with the preparation of cathode materials for Li-ion cells with an active substance in the form of elemental sulfur. The prepared electrodes were investigated using cyclic voltammetry and galvanostatic cycling. Physical characterization by SEM and XRD was provided.
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Jay, Jennifer Ayla 1969. "Effect of polysulfides on cinnabar solubility, partitioning, and methylation by Desulfovibrio desufuricans." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9506.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
Includes bibliographical references.
Sulfate reducing bacteria are believed to be the most important methylators of mercury in aquatic systems. Methylation may be controlled by the availability of mercury to these bacteria and therefore may depend on mercury speciation in sulfidic water ...
by Jennifer Ayla Jay.
Ph.D.
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Zhang, Qiaoyi. "The synthesis and characterization of sodium polysulfides for Na-S battery application." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/90666.

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The limited understanding of the electrochemical mechanism of Na-S battery systems is a barrier to further improve the performance of the Na-S energy storage. The characterization of sodium polysulfides in the Na-S battery systems can offer insightful information to understand the electrochemical reaction mechanism of the Na-S batteries and overcome the "inert" nature of short-chain polysulfides (Na2Sn, 1Master of Science
In recent decades, our society became more and more power-demanding, sodium-sulfur (NaS) energy storage systems attracted researchers’ attention due to their low cost and good performance. However, the limited understanding of the electrochemical mechanism of Na-S battery systems is a barrier to further improve the performance of the Na-S batteries. The characterization of sodium polysulfides in the Na-S battery systems can offer insightful information to understand the working mechanism of the Na-S batteries during charge and discharge of the batteries. Up to now, there are limited studies on the sodium polysulfides compound in the Na-S batteries. Meanwhile, although many synthesis methods for sodium polysulfides have been reported, many related studies offer unclear and misleading parameters. This work examines several reported synthesis methods for sodium polysulfide and offers complete processes with clear parameters for the synthesis of sodium polysulfide. Meanwhile, the sodium polysulfides solution in tetraethylene glycol dimethyl ether (TEGDME), an electrolyte solvent that was widely used in Na-S batteries, were analyzed to study the properties of sodium polysulfides in the Na-S battery system.
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Hippauf, Felix. "Tailoring Pore Size and Polarity for Liquid Phase Adsorption by Porous Carbons." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-223482.

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Adsorption is a versatile purification technique to selectively separate different peptide fractions from a mixture using mild operation conditions. Porous carbons are ideally suited to separate ACE-inhibiting dipeptides by combining tailored size exclusion and polarity selectivity. The desired peptide fraction is mostly hydrophobic and very small and should adsorb inside hydrophobic micropores. The second topic of this thesis is linked to energy storage. The lithium-sulfur battery is a promising alternative to common lithium-ion batteries with theoretical capacities of up to 1672 mAh g−1 sulfur. The second aim of this thesis is to conduct an in-depth investigation of polysulfides interacting with selected carbon materials in a simplified battery electrolyte environment. The focus of this study is laid on the impact of surface polarity and pore size distribution of the carbon to develop a quantitative correlation between polysulfide retention and porosity metrics. Both, the enrichment of ACE-inhibitors and the retention of polysulfides rely on liquid phase adsorption in porous materials, linking the above mentioned topics. This thesis not only aims to develop an enrichment process or to find a superior battery cathode but also strives to explore structure-property relationships that are universally valid. Understanding the complex interplay of pore size and polarity leading to selective interactions between pore wall and the adsorbed species is given a high priority.
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Saidu, Nathaniel Edward Bennett [Verfasser], and Mathias [Akademischer Betreuer] Montenarh. "Effect of coumarin and diallyl polysulfides on HCT116 colon cancer cells / Nathaniel Edward Bennett Saidu. Betreuer: Mathias Montenarh." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2014. http://d-nb.info/1053724675/34.

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Saidu, Nathaniel Edward Bennett Verfasser], and Mathias [Akademischer Betreuer] [Montenarh. "Effect of coumarin and diallyl polysulfides on HCT116 colon cancer cells / Nathaniel Edward Bennett Saidu. Betreuer: Mathias Montenarh." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2014. http://d-nb.info/1053724675/34.

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Books on the topic "Polysulfides"

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Mahon, Andrea. Linear polysulfides: their characterisation and degradation pathways. [s.l.]: typescript, 1996.

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Lucke, H. ALIPS, aliphatic polysulfides: Monograph of an elastomer : history, economy, chemistry, technology, applications, testing/standardization/safety of aliphatic polysulfides. Basel: Hüthig & Wepf Verlag, 1994.

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Tilstra, L. Microbial degradation of polysulfides and insights into their possible occurrence in coal. S.l: s.n, 1990.

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Evans, K. B. Evaluation of a metering, mixing, and dispensing system for mixing polysulfide adhesive: Final report. Brigham City, Utah: Morton Thiokol, Inc., Aerospace Group, 1989.

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S, Minkin Vladimir, and Deberdeev Timur R, eds. Polysulfide oligomer sealants: Synthesis, properties, and applications. Oakville, ON, Canada: Apple Academic Press, 2015.

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Lowe, George Bernard. The durability of adhesion of polysulfide sealants to glass. Leicester: De MontfortUniversity, 1992.

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Lee, T. C. P. Properties and Applications of Elastomeric Polysulfides: Review Reports. Rapra Technology, 1999.

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Parker, Philip M. The 2007 Import and Export Market for Sulfides, Polysulfides, Dithionites, Sulfoxylates, Sulfites, Thiosulfates, Sulfates and Alums in India. ICON Group International, Inc., 2006.

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Parker, Philip M. The World Market for Sulfides, Polysulfides, Dithionites, Sulfoxylates, Sulfites, Thiosulfates, Sulfates and Alums: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Sulfides, Polysulfides, Dithionites, Sulfoxylates, Sulfites, Thiosulfates, Sulfates and Alums in China. ICON Group International, Inc., 2006.

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Book chapters on the topic "Polysulfides"

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Peter, L. B. "Diorgano Polysulfides." In Inorganic Reactions and Methods, 32. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch40.

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Peter, L. B. "Formation of Organic Di- and Polysulfides." In Inorganic Reactions and Methods, 29–30. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch37.

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Fackler, J. P., and K. G. Fackler. "From Hydrogen Sulfide, Polysulfides, and Thiols." In Inorganic Reactions and Methods, 86–89. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch74.

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Peter, L. B. "Formation of Sulfanes and Di- and Polysulfides." In Inorganic Reactions and Methods, 27–28. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch34.

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Fackler, J. P., and K. G. Fackler. "From Hydrogen Sulfide, Hydrogen Polysulfides, and Thiols." In Inorganic Reactions and Methods, 15–18. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch19.

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Kimura, Hideo. "Physiological Roles of Hydrogen Sulfide and Polysulfides." In Chemistry, Biochemistry and Pharmacology of Hydrogen Sulfide, 61–81. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18144-8_3.

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Visscher, P. T., and H. van Gemerden. "Growth of Chlorobium Limicola F. Thiosulfatophilum on Polysulfides." In Green Photosynthetic Bacteria, 287–94. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1021-1_33.

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Zussman, Melvin P., Jenn S. Shih, Douglas A. Wicks, and David A. Tirrell. "Synthesis and Reactions of Halogenated Polyethers and Polysulfides." In ACS Symposium Series, 60–71. Washington, DC: American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0364.ch005.

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Mazurek, Waldemar, and D. Brenton Paul. "Depolymerization of Polysulfides: The Development of Improved Chemical Desealers." In Adhesives, Sealants, and Coatings for Space and Harsh Environments, 293–99. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1047-1_27.

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Fackler, J. P., and K. G. Fackler. "From Thioethers, Organic Polysulfides, and other Sulfur Donor Ligands." In Inorganic Reactions and Methods, 90–91. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch77.

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Conference papers on the topic "Polysulfides"

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Dive, Aniruddha, Ramiro Gonzalez, and Soumik Banerjee. "Graphene/Sulfur and Graphene Oxide/Sulfur Composite Cathodes for High Performance Li-S Batteries: A Molecular Dynamics Study." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67590.

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Abstract:
Lithium – sulfur (Li-S) battery, with theoretical capacity (∼1675 mAh/g) and energy density comparable to that of gasoline, is a promising technology meeting the demands of next-generation electric vehicles. However, the Li-S battery hasn’t been able to reach the theoretically predicted capacity due to several limitations, which include low electrical conductivity of pure sulfur cathode and loss of active material due to dissolution of intermediate polysulfides from the cathode during repetitive charge – discharge cycling referred commonly as “polysulfide shuttle”. Graphene/Graphene oxide (GO) are being explored as cathodes/cathode supports for Li-S batteries to alleviate these problems. We have employed molecular dynamics simulations to calculate the density distributions of polysulfides (S82−) in dimethoxy ethane (DME) – 2, 4 – dioxalane (DOL) electrolyte (1:1 v/v) in the vicinity of different graphene and GO structures, in order to study the impact of hydroxyl functional groups in GO on anchoring polysulfides. Density distribution of polysulfides provides valuable insight on the role of functional groups in successful anchoring of polysulfides onto the GO cathode supports structures.
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Artemkina, S. B., E. D. Grayfer, M. N. Kozlova, P. A. Poltarak, A. A. Poltarak, and V. E. Fedorov. "Transition metal polysulfides and their potential applications." In 2018 41st International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). IEEE, 2018. http://dx.doi.org/10.23919/mipro.2018.8400007.

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Yamanaka, S., T. Ichikawa, H. Sugiura, T. Numakura, S. Hirohito, M. Yamada, N. Fujino, et al. "Role of Reactive Persulfides/Polysulfides in Cellular Senescence of COPD." In American Thoracic Society 2019 International Conference, May 17-22, 2019 - Dallas, TX. American Thoracic Society, 2019. http://dx.doi.org/10.1164/ajrccm-conference.2019.199.1_meetingabstracts.a3755.

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Kafantaris, Fotios-Christos A., Martin Kurek, Gregory Druschel, William Gilhooly, Sabine Dvorski, and Philippe Schmitt-Kopplin. "REACTIVITY OF POLYSULFIDES AND ITS CONTRIBUTION TO CRYPTIC SULFUR CYCLING IN ANOXIC/EUXINIC BASINS." In Joint 52nd Northeastern Annual Section and 51st North-Central Annual GSA Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017ne-291108.

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Yagdi, E., A. Mazumder, JY Lee, A. Gaigneaux, F. Radogna, M. Dicato, P. Chaimbault, C. Jacob, C. Cerella, and M. Diederich. "PO-064 Tubulin-binding anti-cancer polysulfides induce cell death via mitotic arrest and autophagic interference in colon cancer." In Abstracts of the 25th Biennial Congress of the European Association for Cancer Research, Amsterdam, The Netherlands, 30 June – 3 July 2018. BMJ Publishing Group Ltd, 2018. http://dx.doi.org/10.1136/esmoopen-2018-eacr25.108.

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Scicinski, Jan J., Kenneth Olsen, Janet Stephens, and Khosrow Kashfi. "Abstract 6381: NBS-1120: An e-NSAID with potent anti-cancer activity targets cell cycle proteins by generating polysulfides." In Proceedings: AACR Annual Meeting 2020; April 27-28, 2020 and June 22-24, 2020; Philadelphia, PA. American Association for Cancer Research, 2020. http://dx.doi.org/10.1158/1538-7445.am2020-6381.

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Bekturganov, Nuraly. "PHYSICAL-CHEMICAL REGULARITIES OF CALCIUM POLYSULFIDE SYNTHESIS." In 16th International Multidisciplinary Scientific GeoConference SGEM2016. Stef92 Technology, 2016. http://dx.doi.org/10.5593/sgem2016/b12/s04.147.

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Takahashi, Yui. "Phylogenetic Characteristics of Sulfate-reducing Bacteria Having Ability to Reduce Polysulfide." In WATER DYANMICS: 3rd International Workshop on Water Dynamics. AIP, 2006. http://dx.doi.org/10.1063/1.2207108.

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Baharun, N. N. S., M. A. Mingsukang, M. H. Buraidah, H. J. Woo, and A. K. Arof. "Electrical Properties of Plasticized Sodium-Carboxymethylcellulose (NaCMC) Based Polysulfide Solid Polymer Electrolyte." In 2018 20th International Conference on Transparent Optical Networks (ICTON). IEEE, 2018. http://dx.doi.org/10.1109/icton.2018.8473830.

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Song, Bo, Fan Wu, Kyoung-sik Moon, and C. P. Wong. "Formulation and Processing of Conductive Polysulfide Sealants for Automotive and Aerospace Applications." In 2019 IEEE 69th Electronic Components and Technology Conference (ECTC). IEEE, 2019. http://dx.doi.org/10.1109/ectc.2019.00031.

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Reports on the topic "Polysulfides"

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Meihui Wang. The electrical conductivity of sodium polysulfide melts. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/7243774.

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Wang, Meihui. The electrical conductivity of sodium polysulfide melts. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/10181806.

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Celina, Mathias C., Nicholas Henry Giron, and Adam Quintana. Aging Behavior and Performance Projections for a Polysulfide Elastomer. Office of Scientific and Technical Information (OSTI), May 2015. http://dx.doi.org/10.2172/1183359.

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Marschilok, Amy, Esther Takeuchi, and Kenneth Takeuchi. Sulfur Loaded MS2 Barrier for Control of Polysulfide Shuttling in Lithium Sulfur Batteries (Final Report). Office of Scientific and Technical Information (OSTI), June 2020. http://dx.doi.org/10.2172/1635155.

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