Tag: 200-300

《Covalent organic framework-based ultrathin crystalline porous film: manipulating uniformity of fluoride distribution for stabilizing lithium metal anode》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. These research results belong to Zhao, Zedong; Chen, Wuji; Impeng, Sarawoot; Li, Mengxiong; Wang, Rong; Liu, Yicheng; Zhang, Long; Dong, Lei; Unruangsri, Junjuda; Peng, Chengxin; Wang, Changchun; Namuangruk, Supawadee; Lee, Sang-Young; Wang, Yonggang; Lu, Hongbin; Guo, Jia. Related Products of 34374-88-4 The article mentions the following:

Lithium metal is regarded as the “”Holy Grail”” for rechargeable batteries yet it still suffers from low coulombic efficiency caused by its high reactivity toward the electrolyte. The so-formed solid-electrolyte interphases (SEIs) are ununiform and sluggish-ion-conducting further inducing severe dendrite growth. Herein, we report the in situ LiF-embedded covalent organic framework (COF) as a novel artificial lithium/electrolyte interphase. Briefly, an electrochem. active COF ultrathin film is synthesized by interfacial aldimine condensation, in which lithiophilic moieties reside in the high-surface-area COF film and can locally concentrate Li-salts from a dilute electrolyte. This promotes the electrochem. in situ formation of anion-derived LiF-rich SEI during the first cycling. Owing to the coaxially oriented microporous channels displayed in the COF, the as-formed LiF grains are confined in the micropores and evenly distributed throughout the COF matrix, thereby enhancing the mech. strength of the SEI against dendrite growth as well as retaining flexibility to tolerate the anode volume change over cycling. Also, the Li+ diffusion pathway is highly ordered along the 1D pore walls of the COF so as to spatially homogenize Li+ flux. Therefore, the LiF-embedded COF interphase exhibits cooperative effectiveness to greatly stabilize the lithium metal anode. The full cell maintains its excellent performances with stable cycling and high efficiency in the close-to-practice conditions. In addition to this study using 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde, there are many other studies that have used 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4Related Products of 34374-88-4) was used in this study.

2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4) is a member of phloroglucinol derivatives.Related Products of 34374-88-4For acyl phloroglucinols, it is considered the largest category of compounds among phloroglucinols of natural characteristics.

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In 2019,Journal of Materials Chemistry A: Materials for Energy and Sustainability included an article by Yuan, Jinqiu; Wu, Mengyuan; Wu, Hong; Liu, Yanan; You, Xinda; Zhang, Runnan; Su, Yanlei; Yang, Hao; Shen, Jianliang; Jiang, Zhongyi. Name: 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde. The article was titled 《Covalent organic framework-modulated interfacial polymerization for ultrathin desalination membranes》. The information in the text is summarized as follows:

The demand for thin-film composite nanofiltration membranes bearing unprecedented water permeance and desirable salt rejection is ever increasing in desalination. Conventional interfacial polymerization usually generates a thick (∼100 nm) skin layer on hydrophobic substrate having low-porosity, leading to limited water permeance. Herein, we engineered a highly porous and superhydrophilic composite substrate to modulate the interfacial polymerization and generate an ultrathin polyamide skin layer, even below 10 nm. The composite substrate was constructed by depositing covalent organic framework nanosheets (CONs) on a microfiltration membrane via vacuum-assistant assembly. Owing to the highly porous structure and superhydrophilic nature of CONs, the composite substrate favored a high storage capacity and uniform distribution of the amine monomers. We manipulated the monomer storage capacity of the substrate by varying the loading content of CONs and demonstrated that higher amino monomer concentration could accelerate the self-sealing and self-termination of the interfacial polymerization, thus generating a thinner skin layer from ∼70 nm to sub-10 nm. Moreover, the highly porous structure of CONs imparted little addnl. water transport resistance. The sub-10 nm film composite membrane exhibited a superior water permeance of 535.5 L m-2 h-1 MPa-1 with a high rejection of 94.3% for Na2SO4, which was about 2-8 times higher than that of state-of-the-art nanofiltration membranes with comparable rejection. In addition to this study using 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde, there are many other studies that have used 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4Name: 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde) was used in this study.

2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4) is a member of phloroglucinol derivatives.Name: 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehydePhloroglucinols are known for their broad-spectrum antiviral, antibacterial, antifungal, antihelminthic, and phytotoxic activities.

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《Facile synthesis of a covalently connected rGO-COF hybrid material by in situ reaction for enhanced visible-light induced photocatalytic H2 evolution》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. These research results belong to Yao, Yu-Hao; Li, Jing; Zhang, Hao; Tang, Hong-Liang; Fang, Liang; Niu, Gu-Dan; Sun, Xiao-Jun; Zhang, Feng-Ming. Electric Literature of C9H6O6 The article mentions the following:

Covalent organic frameworks (COFs) have shown promising visible-light-driven hydrogen evolution activity, but improving the separation and migration of photogenerated electron-hole pairs is still the key point for further increasing their activity. In this work, for the first time, we designed and synthesized a new type of covalently connected rGO-COF photocatalyst for enhanced hydrogen evolution. A series of rGO-TpPa-1-COFs was obtained by a facile one-pot reaction through adding GO to the synthetic system of TpPa-1-COF with DMF as a solvent, which led to the reduction and functionalization of GO and further covalent connection with the COF as confirmed by various characterization techniques. The resulting rGO(5%)-TpPa-1-COF showed a H2 evolution rate of 11.98 mmol g-1 h-1 under visible-light irradiation, which was 4.85 and 2.50 times higher than those of pure TpPa-1-COF and 5%rGO/TpPa-1-COF without any covalent connection between the two components, resp. Further investigations confirmed that the covalent connection between the rGO and TpPa-1-COF components not only served as a “”band”” to tightly combine these two types of 2D material together, but also acted as a “”bridge”” to largely improve the separation of photogenerated charges of the COF as well as the migration of photogenerated electrons to rGO, thus leading to the resulting enhanced H2 evolution activity. The experimental process involved the reaction of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4Electric Literature of C9H6O6)

2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4) is a member of phloroglucinol derivatives.Electric Literature of C9H6O6For acyl phloroglucinols, it is considered the largest category of compounds among phloroglucinols of natural characteristics.

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In 2019,Acta Crystallographica, Section E: Crystallographic Communications included an article by Wiedemann, Dennis; Kulko, Roman-David; Grohmann, Andreas. Category: alcohols-buliding-blocks. The article was titled 《Synthesis, characterization, and crystal structure of aquabis(4,4′-dimethoxy-2,2′-bipyridine)[μ-(2R,3R)-tartrato(4-)]dicopper(II) octahydrate》. The information in the text is summarized as follows:

Typical electroless copper baths (ECBs), which are used to chem. deposit copper on printed circuit boards, consist of an aqueous alkali hydroxide solution, a copper(II) salt, formaldehyde as reducing agent, an L-(+)-tartrate as complexing agent, and a 2,2-bipyridine derivative as stabilizer. Actual speciation and reactivity are, however, largely unknown. Herein, we report on the synthesis and crystal structure of aqua-1κO-bis(4,4-dimethoxy-2,2-bipyridine)-1κ2N,N;2κ2N,N-[μ-(2R,3R)-2,3-dioxidosuccinato-1κ2O1,O2:2κ2O3,O4]dicopper(II) octahydrate, [Cu2(C12H12N2O2)2(C4H2O6)(H2O)]·8H2O, from an ECB mock-up. The title compound crystallizes in the Sohncke group P21 with one chiral dinuclear complex and eight mols. of hydrate water in the asym. unit. The expected retention of the tartrato ligand′s absolute configuration was confirmed via determination of the absolute structure. The complex mols. exhibit an ansa-like structure with two planar, nearly parallel bipyridine ligands, each bound to a copper atom that is connected to the other by a bridging tartrato ′handle′. The complex and water mols. give rise to a layered supramol. structure dominated by alternating π stacks and hydrogen bonds. The understanding of structures ex situ is a first step on the way to prolonged stability and improved coating behavior of ECBs.Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Category: alcohols-buliding-blocks) was used in this study.

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Category: alcohols-buliding-blocks Potassium sodium tartrate tetrahydrate has been used in the preparation of Lowry reagent for the determination of microsomal protein concentration in rat hepatic microsomes by Lowry method.

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Formula: C4H12KNaO10In 2013 ,《Studies on solution-grown pure and doped sodium potassium tartrate crystals》 appeared in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy. The author of the article were Mathivanan, V.; Haris, M.. The article conveys some information:

A systematic anal. of the FTIR spectroscopy and Raman spectra of pure and Cu(NO3)2.3H2O doped Rochelle salt (NaKC4H4O6.4H2O) in terms of the standard frequency correlations, deuteration shift and typical nature (with respect to intensity and width) of bands due to different modes is reported. The bands due to the internal modes (excluding some skeletal modes) of the C4H4O62- ion appear as doublets. For certain modes (e.g. βCH, γC(OH) and δCOO) doublets arise owing to interaction between 2 identical oscillations of 2 identical groups in COO(HO)HCCH(OH)COO2-, while for other modes (e.g. γCH, γCOa, γCOa, γCOs, δCOH and τCOO) they arise owing to crystallog. distinguishable sites for 2 identical oscillators. The effect of dopant in the pure Rochelle salt crystals is found out by using Elemental anal. The unit cell volume of pure and Cu(NO3)2.3H2O doped Rochelle salt crystals is found out from powder x-ray diffraction studies. The experimental process involved the reaction of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Formula: C4H12KNaO10)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Formula: C4H12KNaO10 It is utilized to break up emulsion in organic synthesis as well as a common precipitant in protein crystallography.

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In 2022,Chen, Sitan; Liu, Yanfang; Feng, Keqin published an article in Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science. The title of the article was 《Effects of Graphene Additions on Iron-Based Friction Material Prepared From Vanadium-Bearing Titanomagnetite Concentrates Directly》.HPLC of Formula: 6381-59-5 The author mentioned the following in the article:

The iron-based friction material was prepared directly from vanadium-bearing titanomagnetite concentrates by in situ selective carbothermal reactions and vacuum sintering. In this study, drawing on the extraordinary properties of graphene, experiments were conducted to evaluate the effects of graphene additives with a range of 0.2 to 1.0 wt pct on the microstructure and properties of iron-based materials sintered at 1050°C for 3 h. The graphene was added in the form of copper-coated graphene to solve the weak bonding between matrix and graphene. The results show that the microstructure and properties of iron-based friction materials with graphene are significantly improved, especially the iron-based material containing 0.8 wt pct graphene. The graphene reduces the lamellar spacing of pearlite and contributes a more uniform growth of the grain due to its considerable high thermal conductivity In addition, graphene could also facilitate the austenite transformation to refine the grain. As a result, with the increasing of the graphene content, the hardness is enhanced while the wear rate and friction coefficient are decreased. Particularly, the oxide films on the worn surface are accumulated and transform from FeO to Fe3O4 and Fe2O3, together with the improved wear resistance, leading the wear behavior turns from severe abrasive and adhesive wear to mild abrasive wear. However, when the graphene content reaches to 1.0 wt pct, both the microstructure and tribol. properties of the materials deteriorate again due to the aggregation of graphene. The experimental process involved the reaction of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5HPLC of Formula: 6381-59-5)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. HPLC of Formula: 6381-59-5 Potassium sodium tartrate tetrahydrate has been used in the preparation of Lowry reagent for the determination of microsomal protein concentration in rat hepatic microsomes by Lowry method.

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Quality Control of 5-(tert-Butyl)-4-hydroxyisophthalaldehydeOn September 25, 2012 ,《Mimicking the electron transfer chain in photosystem II with a molecular triad thermodynamically capable of water oxidation》 was published in Proceedings of the National Academy of Sciences of the United States of America. The article was written by Megiatto, Jackson D. Jr.; Antoniuk-Pablant, Antaeres; Sherman, Benjamin D.; Kodis, Gerdenis; Gervaldo, Miguel; Moore, Thomas A.; Moore, Ana L.; Gust, Devens. The article contains the following contents:

In the photosynthetic photosystem II, electrons are transferred from the manganese-containing oxygen evolving complex (OEC) to the oxidized primary electron-donor chlorophyll P680•+ by a proton-coupled electron transfer process involving a tyrosine-histidine pair. Proton transfer from the tyrosine phenolic group to a histidine nitrogen positions the redox potential of the tyrosine between those of P680•+ and the OEC. We report the synthesis and time-resolved spectroscopic study of a mol. triad that models this electron transfer. The triad consists of a high-potential porphyrin bearing two pentafluorophenyl groups (PF10), a tetracyanoporphyrin electron acceptor (TCNP), and a benzimidazole-phenol secondary electron-donor (Bi-PhOH). Excitation of PF10 in benzonitrile is followed by singlet energy transfer to TCNP (r = 41 ps), whose excited state decays by photoinduced electron transfer (r = 830 ps) to yield Bi-PhOH-PF10•+-TCNP•-. A second electron transfer reaction follows (T < 12 ps), giving a final state postulated as BiH+-PhO•-PF10-TCNP•-, in which the phenolic proton now resides on benzimidazole. This final state decays with a time constant of 3.8 ps. The triad thus functionally mimics the electron transfers involving the tyrosine-histidine pair in PSII. The final charge-separated state is thermodynamically capable of water oxidation, and its long lifetime suggests the possibility of coupling systems such as this system to water oxidation catalysts for use in artificial photosynthetic fuel production The experimental process involved the reaction of 5-(tert-Butyl)-4-hydroxyisophthalaldehyde(cas: 153759-59-2Quality Control of 5-(tert-Butyl)-4-hydroxyisophthalaldehyde)

5-(tert-Butyl)-4-hydroxyisophthalaldehyde(cas: 153759-59-2) belongs to phenols.Deprotonation of a phenol forms a corresponding negative phenolate ion or phenoxide ion, and the corresponding salts are called phenolates or phenoxides (aryloxides according to the IUPAC Gold Book).Quality Control of 5-(tert-Butyl)-4-hydroxyisophthalaldehyde

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Application In Synthesis of (3-Chlorophenyl)(phenyl)methanolOn October 31, 1979 ,《Oxidation of secondary alcohols by chromium(VI) in presence of oxalic acid》 appeared in Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical & Analytical. The author of the article were Nagarajan, K.; Sundaram, S.; Venkatasubramanian, N.. The article conveys some information:

The substituent effects on the oxidation kinetics of secondary alcs. (e.g., Ph2CHOH, PhCHMeOH) by Cr(VI) are examined A comparison of the reactivities of secondary alcs. towards oxidation by Cr(VI) in the presence of oxalic acid is also made. The increased reactivity is explained on the basis of the formation of a ternary complex of oxalic acid-Cr(VI)-alcs. with a rate-determining decomposition of the complex involving a direct transition from Cr(VI) to Cr(III). The reduced selectivity in the magnitude of the subsequent effects agrees with this mechanism. The results came from multiple reactions, including the reaction of (3-Chlorophenyl)(phenyl)methanol(cas: 63012-03-3Application In Synthesis of (3-Chlorophenyl)(phenyl)methanol)

(3-Chlorophenyl)(phenyl)methanol(cas: 63012-03-3) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.Application In Synthesis of (3-Chlorophenyl)(phenyl)methanol

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Barton, Lisa M.; Chen, Longrui; Blackmond, Donna G.; Baran, Phil S. published their research in Proceedings of the National Academy of Sciences of the United States of America in 2021. The article was titled 《Electrochemical borylation of carboxylic acids》.Electric Literature of C13H26B2O4 The article contains the following contents:

A simple electrochem. mediated method for the conversion of alkyl carboxylic acids to their borylated congeners is presented. This protocol features an undivided cell setup with inexpensive carbon-based electrodes and exhibits a broad substrate scope and scalability in both flow and batch reactors. The use of this method in challenging contexts is exemplified with a modular formal synthesis of jawsamycin, a natural product harboring five cyclopropane rings. After reading the article, we found that the author used Bis[(pinacolato)boryl]methane(cas: 78782-17-9Electric Literature of C13H26B2O4)

Bis[(pinacolato)boryl]methane(cas: 78782-17-9) belongs to organoboron compounds.Electric Literature of C13H26B2O4 Organoboron compounds are versatile intermediates and as such are some of the most important classes of reagents in modern organic chemistry. This stems from their ease of preparation combined with their ability to undergo a broad range of chemical transformations.

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Application of 6381-59-5In 2021 ,《Study of ferroelectric phenomena and other related properties in NaKC4H4O6·4H2O crystal》 appeared in European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics. The author of the article were Khan, Muzaffar Iqbal; Upadhyay, Trilok Chandra. The article conveys some information:

We calculated ferroelec. and elec. permittivity properties of H-bonded-type NaKC4H4O6·4H2O crystal within modified two sublattice pseudospin lattice coupled mode model Hamiltonian extended by the phonon anharmonic interactions terms, indirect spin-lattice coupling and direct spin-spin coupling interaction terms along with external elec. field terms. The model Hamiltonian is developed by the modification of the semi-microscopic Mitsui’s mode model. With the help of double thermal Green’s function method and sym. decoupling scheme, we obtain the theor. expressions of shift, width, normal mode frequency, Curie temperatures, dielec. permittivity, tangent loss and spontaneous polarization for NaKC4H4O6·4H2O (RS) crystal. The numerical calculation has been obtained by setting different model parameters in derived expressions. The thermal dependence of the above properties has been calculated and theor. results are well agreed with the exptl. results of Ismailzade et al., Jona and Shirane. A comprehensive investigation of thermal variation on phase transitions of ferroelec. normal mode frequency, elec. permittivity, dielec. loss and spontaneous polarization properties of NaKC4H4O6·4H2O (RS) crystal has been obtained. After reading the article, we found that the author used Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Application of 6381-59-5)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Application of 6381-59-5 As a Biuret reagent, it is used to measure the protein concentration. Furthermore, it is used as laxative and is also used in food industry.

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