Month: December 2022

Xie, Zhichao published the artcileAll-Solid-State Vertical Three-Terminal N-Type Organic Synaptic Devices for Neuromorphic Computing, Recommanded Product: 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is polythiophene artificial synaptic device neuromorphic computing handwritten digital dataset.

Artificial synaptic devices are the basic composition units for neuromorphic computing processors that realize massive parallel computing. However, the n-type organic transistors have failed to achieve good performance as an artificial synaptic device for neuromorphic computing until now. Here, a vertical three-terminal n-type organic artificial synapse (TNOAS) using a lithium ion-based organic dielec. and the n-type donor-acceptor (D-A) conjugated polymer-naphthalene-1,4,5,8-tetracarboxylic-diimide-thiophene-vinyl-thiophene (NDI-gTVT) as the channel is proposed. The TNOAS achieves nonvolatile conductance modulation with high c.d. operation (≈10 KA cm-2) at low voltage and mimics the basic functions of biol. synapses, such as long-term synaptic plasticity and paired-pulse facilitation. The min. energy consumption of a response event triggered by a single action potential is 6.16 pJ, which can be comparable with p-type counterparts. Moreover, simulation using handwritten digital datasets exhibit a high recognition accuracy of 94%.

Advanced Functional Materials published new progress about Digital data. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Recommanded Product: 2,5,8,11-Tetraoxatridecan-13-ol.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Li, Yongtao published the artcileBuilding a Chemical Toolbox for Human Pregnane X Receptor Research: Discovery of Agonists, Inverse Agonists, and Antagonists Among Analogs Based on the Unique Chemical Scaffold of SPA70, Formula: C8H11BO3, the main research area is pregnane X receptor agonist antagonist inverse agonist SPA70 analog.

Pregnane X receptor (PXR) plays roles in detoxification and other physiol. processes. PXR activation may enhance drug metabolism (leading to adverse drug reactions) or inhibit inflammation. Therefore, PXR agonists, antagonists, and inverse agonists may serve as research tools and drug candidates. However, a specific PXR modulator with an associated structure-activity relationship is lacking. Based on the scaffold of specific human PXR (hPXR) antagonist SPA70 (10), we developed 81 SPA70 analogs and evaluated their receptor-binding and cellular activities. Interestingly, analogs with subtle structural differences displayed divergent cellular activities, including agonistic, dual inverse agonistic and antagonistic, antagonistic, and partial agonistic/partial antagonistic activities (as in compounds 111, 10, 97, and 42, resp.). We generated a pharmacophore model that represents 81 SPA70 analogs, and docking models that correlate strong interactions between the compounds and residues in the AF-2 helix with agonistic activity. These compounds are novel chem. tools for studying hPXR.

Journal of Medicinal Chemistry published new progress about Cytotoxicity. 127972-00-3 belongs to class ethers-buliding-blocks, name is 2-Methoxy-5-methylphenylboronic acid, and the molecular formula is C8H11BO3, Formula: C8H11BO3.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Varela-Aramburu, Silvia published the artcileIntroducing Hyaluronic Acid into Supramolecular Polymers and Hydrogels, Synthetic Route of 23783-42-8, the main research area is hyaluronic acid supramol polymer hydrogel functional biomaterial.

The use of supramol. polymers to construct functional biomaterials is gaining more attention due to the tunable dynamic behavior and fibrous structures of supramol. polymers, which resemble those found in natural systems, such as the extracellular matrix. Nevertheless, to obtain a biomaterial capable of mimicking native systems, complex biomols. should be incorporated, as they allow one to achieve essential biol. processes. In this study, supramol. polymers based on water-soluble benzene-1,3,5-tricarboxamides (BTAs) were assembled in the presence of hyaluronic acid (HA) both in solution and hydrogel states. The coassembly of BTAs bearing tetra(ethylene glycol) at the periphery (BTA-OEG4) and HA at different ratios showed strong interactions between the two components that led to the formation of short fibers and heterogeneous hydrogels. BTAs were further covalently linked to HA (HA-BTA), resulting in a polymer that was unable to assemble into fibers or form hydrogels due to the high hydrophilicity of HA. However, coassembly of HA-BTA with BTA-OEG4 resulted in the formation of long fibers, similar to those formed by BTA-OEG4 alone, and hydrogels were produced with tunable stiffness ranging from 250 to 700 Pa, which is 10-fold higher than that of hydrogels assembled with only BTA-OEG4. Further coassembly of BTA-OEG4 fibers with other polysaccharides showed that except for dextran, all polysaccharides studied interacted with BTA-OEG4 fibers. The possibility of incorporating polysaccharides into BTA-based materials paves the way for the creation of dynamic complex biomaterials.

Biomacromolecules published new progress about Crosslinking. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Synthetic Route of 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Lin, Wei-Chuwan published the artcileDependence of vicinal H-H coupling constants in substituted ethanes on the potential function characteristics to internal rotation. Application to A2B2 PMR spectrum of nonsymmetrical 1,2-disubstituted ethanes, Application In Synthesis of 622-86-6, the main research area is nonsym disubstituted ethanes NMR; PMR nonsym disubstituted ethanes; coupling constant disubstituted ethanes; constant coupling disubstituted ethanes; disubstituted ethanes coupling constant; ethanes disubstituted coupling constant.

Based on rotational averaging, a theory governing the change of the vicinal coupling parameters L and N in the A2B2 PMR spectra of nonsym. 1,2-disubstituted ethanes, as evidenced in the studies of substituent effect and solvent effect, has been developed in terms of the potential function characteristics to internal rotation about the C-C bond. By taking the average over the entire period of dihedral angle with respect to an appropriate potential function for internal rotation of the compound, a refined Karplus equation for the vicinal H-H coupling constant as a function of dihedral angle, J = A cosΦ2 + B cosΦ + C, could yield the expression for L/A and (or) N/A in terms of hyperbolic Bessel functions which describes an explicit functional dependence of L and (or) N on both the ethane barrier and the maximum dipole interaction potential between the 2 bonds C-X and C-Y. These expressions enable one to determine the phys. parameters related to internal rotation upon measurement of L and (or) N from NMR spectrum. The determined energy difference between rotamers for several 1,2-disubstituted ethanes were found in good agreement with the literature values. Solvent effect on the A2B2 PMR spectrum is discussed on the light of the theory. The NMR exptl. relation N ∓ 1/3 |L| = A was derived from the above expressions. This latter relation enables one to tell whether the trans or the gauche isomer is more stable for the given compound from measurement on N and L with respect to the neat sample or in the medium of various solvents, and it also enables one to evaluate the value of A for each given compound

Journal of Chemical Physics published new progress about Conformation. 622-86-6 belongs to class ethers-buliding-blocks, name is (2-Chloroethoxy)benzene, and the molecular formula is C8H9ClO, Application In Synthesis of 622-86-6.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Wang, Shixue published the artcileSynthesis of Y-Shaped OEGylated Poly(amino acid)s: The Impact of OEG Architecture, Computed Properties of 23783-42-8, the main research area is PEGylation polyamino acid glutamic structure.

OEGylation is an attractive approach to modifying poly(amino acid)s. OEG conjugation improves water-solubility of poly(amino acid)s, and confers possible thermal-responsive functionality for the conjugated poly(amino acid)s. Nevertheless, the impact of OEG architecture and the manner in which the OEG moiety interferes with the performances of poly(amino acid)s remain a work in progress. In this study, a series of new linear and Y-shaped OEG-substituted poly(glutamic acid)s were designed and synthesized. It is found that the thermoresponsive behavior of OEGylated poly(glutamic acid)s experiences steric repulsion effect, the strengths of which are architecture and length-dependent, and grows pronounced only when the number of the OEG units is ≥6. Notably, the Y-shaped architecture is able to stabilize the helicity of poly(glutamic acid) backbones, while maintaining higher α-helical conformation than its linear counterparts. In sum, our result indicate that Y-shaped architecture is more appropriate toward OEGylating poly(amino acid)s for biomedical applications.

Biomacromolecules published new progress about Conformation. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Computed Properties of 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Mukherjee, Anurag published the artcileUltrathin Two Dimensional (2D) Supramolecular Assembly and Anisotropic Conductivity of an Amphiphilic Naphthalene-Diimide, Application In Synthesis of 23783-42-8, the main research area is supramol structure self assembly naphthalene diimide chromophore.

Two-dimensional (2D)-supramol. assemblies of π-conjugated chromophores are relatively less common compared to a large number of recent examples on their low dimensional (0D or 1D) assemblies or 3D architectures. This article reports a rational design for the 2D supramol. assembly of an amphiphilic core-substituted naphthalene-diimide derivative (cNDI-1). The building block contains a naphthalene-diimide (NDI) chromophore, sym. substituted with two dodecyl chains from the aromatic core while the imide positions are functionalized with two hydrophilic wedges containing oligo-oxyethylene chains. In water, it exhibits entropically favorable self-assembly with a critical aggregation concentration of 1.5 x 10-5 M and a lower critical solution temperature of 55°C. The UV/vis absorption spectrum in water shows bathochromically shifted absorption bands compared to that of the monomeric dye in THF, indicating offset π-stacking among the NDI chromophores. C-H sym. and asym. stretching frequencies in the FT-IR spectrum support the presence of organized hydrocarbon chains in trans conformation in the self-assembled state, similar to that in the crystalline n-alkanes, which is further supported by studying the general polarization (GP) values of a noncovalently entrapped Laurdan dye. The at. force microscopy (AFM) image shows the formation of ultrathin (height < 2.0 nm) ribbons for the spontaneously assembled sample which eventually produces a large-area 2D nanosheet by the lateral organization. The powder X-ray diffraction pattern of the drop-casted film, prepared from the preformed aggregates, reveals sharp peaks that indicate a crystalline lamellar packing along the direction of the 2D growth. Differential scanning calorimetry trace shows the melting of the crystalline alkyl chain domain at T > 75°C, which destroys the 2D assembly. Local-scale photoconductivity of the ordered 2D assembly, studied by the flash-photolysis time-resolved microwave conductivity (FP-TRMC) technique, reveals an anisotropic conductivity with ~3 times larger conductivity along the parallel direction compared to that along the perpendicular one.

Langmuir published new progress about Chromophores. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Application In Synthesis of 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Liu, Xiao published the artcileInhibition of Discharge Side Reactions by Promoting Solution-Mediated Oxygen Reduction Reaction with Stable Quinone in Li-O2 Batteries, Quality Control of 143-24-8, the main research area is lithium oxygen battery quinone redox mediator oxygen reduction reaction; Li2O2; lithium−oxygen batteries; oxygen reduction reaction; quinone; redox mediator; solution mediated.

Aprotic lithium-oxygen (Li-O2) batteries with an ultrahigh theor. energy d. have great potential in rechargeable power supply, while their application still faces several challenges, especially poor cycle stability. To solve the problems, one of the effective strategies is to inhibit the generation of the LiO2 intermediate produced via a surface-mediated oxygen reduction reaction (ORR) pathway, which is an important species inducing byproduct generation and low cell cyclic stability. Herein, a series of quinones and solid materials serve as the solution-mediated and surface-mediated ORR catalysts, and it was found that the generation of LiO2 and byproducts from solid catalysts was inhibited by quinones. Among the studied quinones, benzo[1,2-b:4,5-b’]dithiophene-4,8-dione, a quinone mol. with the advantage of a highly sym. planar and conjugated structure and without α-H, exhibits high redox potential, diffusion coefficient, and electrochem. stability, and consequently the best ORR activities and the capability to inhibit byproduct generation. It indicated that the increase of the solution-mediated ORR pathway plays an important role in restraining the discharging side reaction, substantially improving cell cycle stability and capacity. This study provides the theor. and exptl. basis for better understanding the ORR process of Li-O2 batteries.

ACS Applied Materials & Interfaces published new progress about Carbon paper. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Kucuk, Asuman Celik published the artcileLow-cost fluoride source for organic liquid electrolyte-based fluoride shuttle battery, Quality Control of 143-24-8, the main research area is fluoride shuttle battery organic liquid electrolyte defluorination.

The effects of using low-cost inorganic fluoride salts (i.e., KF or NaF) as fluoride sources in fluoride shuttle batteries (FSBs) on the electrochem. compatibility of BiF3 electrodes are investigated herein. The preparation of electrolytes containing saturated KF or NaF and 0.5 M 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (DiOB-Py) in G4 is described. For Py/NaF/G4, the discharge and charge reactions of BiF3 were hindered because of the low solubility of NaF as well as the low ionic conductivity of the electrolyte. However, inductively coupled plasma mass spectrometry (ICP-MS) anal. revealed that the solubility of KF in Py/KF/G4 was moderate and the ionic conductivity of Py/KF/G4 was promising. Higher oxidation and reduction peaks observed in the cyclic voltammograms of Py/KF/G4 than those of Py/G4 and Py/NaF/G4 are attributed to the enhanced electrochem. activity of the former. Consequently, the BiF3/C nanocomposite electrode exhibits good cycling capability in Py/KF/G4, with initial discharge/charge capacities of 316/218 mAh g-1, resp. Moreover, the ICP-MS and Raman spectroscopy analyses revealed that defluorination reactions of BiF3 occur via a direct desorption mechanism. Py/KF/G4 is the first effective electrolyte based on a low-cost inorganic salt. FSBs exhibit improved performance in Py/KF/G4 compared with CsF salt systems, which warrants further investigation.

Journal of the Electrochemical Society published new progress about Ball milling. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Go, Wooseok published the artcileInvestigation on the Structure and Properties of Na3.1Zr1.55Si2.3P0.7O11 as a Solid Electrolyte and Its Application in a Seawater Battery, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is sodium superionic conductor solid electrolyte seawater battery; NASICON; ceramic; ionic conductivity; seawater battery; solid electrolyte.

The ionic conductivity, bend strength, and electrochem. performance in a seawater battery (SWB) of an Na3.1Zr1.55Si2.3P0.7O11 (vA-NASICON) solid electrolyte were compared to those of Na3Zr2Si2PO12 (H-NASICON). vA-NASICON exhibited three times higher total ionic conductivity (8.6 x 10-4 S/cm) than H-NASICON (2.9 x 10-4 S/cm). This is due to the higher bulk ionic conductivity and lower grain boundary resistance of vA-NASICON. The higher bulk conductivity of vA-NASICON is a result of its higher Na content, leading to a larger concentration of charge carriers and/or the formation of a higher conductive rhombohedral phase. The lower grain boundary resistance of vA-NASICON is a result of its larger grain size and reduced ZrO2 content. The bend strength of vA-NASICON (95 MPa) was 30% higher than that of the H-NASICON ceramic. The higher bend strength of vA-NASICON was attributed to its reduced ZrO2 secondary phase (1.1 vol %) compared to that of H-NASICON (2.6 vol %). When the vA-NASICON ceramic was tested in the SWB as a solid electrolyte, an 8.27% improved voltage efficiency and 81% higher power output were demonstrated, compared to those of H-NASICON, as a result of its higher total ionic conductivity and mech. strength. At the same time, the vA-NASICON membrane revealed comparable cycle life (1000 h) to that of H-NASICON. These results suggest that vA-NASICON can be a better alternative than H-NASICON for use in the SWB.

ACS Applied Materials & Interfaces published new progress about Ball milling. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Yang, Yuanying published the artcileHigh Active Magnesium Trifluoromethanesulfonate-Based Electrolytes for Magnesium-Sulfur Batteries, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is high active magnesium trifluoromethanesulfonate electrolyte magnesium sulfur battery; anthracene; electrolytes; magnesium−sulfur batteries; rechargeable magnesium batteries; trifluoromethanesulfonate.

The shortage of high-performance and easily prepared electrolyte has hindered the progress of rechargeable magnesium-sulfur (Mg-S) batteries. In this paper, we develop a new electrolyte based on Mg(CF3SO3)2-AlCl3 dissolved in THF and tetraglyme mixed solvents. Mg(SO3CF3)2 as an Mg2+ source is nonnucleophilic, easy to handle, and much cheaper than Mg(TFSI)2 (TFSI = bis(trifluoromethanesulfonyl)imide). After modification with anthracene (π stabilizing agent) as a coordinating ligand to stabilize the Mg2+ ions and MgCl2 to improve the interface properties by accelerating the reaction of Mg(CF3SO3)2 with AlCl3, the electrolyte exhibits a low overpotential for overall Mg deposition and dissolution, moderate anodic stability (3.25 V on Pt, 2.5 V on SS, 2.0 V on Cu, and 1.85 V on Al, resp.), and a suitable ionic conductivity (1.88 mS cm-1). More importantly, this electrolyte modulated by Li-salt additives exhibits good compatibility with S cathode and can be applicable for Mg-S batteries. The rational formulation of the new electrolyte could provide a new avenue for simply prepared Mg electrolytes of Mg-S and rechargeable magnesium batteries.

ACS Applied Materials & Interfaces published new progress about Ball milling. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem