Author: tianli

Das, Kalicharan published the artcilePhosphine-Free Well-Defined Mn(I) Complex-Catalyzed Synthesis of Amine, Imine, and 2,3-Dihydro-1H-perimidine via Hydrogen Autotransfer or Acceptorless Dehydrogenative Coupling of Amine and Alcohol, SDS of cas: 111-87-5, the main research area is manganese catalyzed dehydrogenative coupling aryl amine benzyl alc; crystal structure thioalkylaminopyridyl manganese cation complex; mol structure thioalkylaminopyridyl manganese cation complex; perimidine benzo preparation; stilbene amino preparation; resveratrol derivative preparation.

The application of nontoxic, earth-abundant transition metals in place of costly noble metals is a paramount goal in catalysis and is especially interesting if the air- and moisture-stable ligand scaffold was used. Herein, the authors report the synthesis of amines/imines directly from alc. and amines via H autotransfer or acceptorless dehydrogenation catalyzed by well-defined phosphine-free Mn complexes. Both imines and amines can be obtained from the same set of alcs. and amines using the same catalyst, only by tuning the reaction conditions. The amount and nature of the base are a highly important aspect for the observed selectivity. Both the primary and secondary amines were employed as substrates for the N-alkylation reaction. As a highlight, the authors showed the chemoselective synthesis of resveratrol derivatives Also, the Mn-catalyzed dehydrogenative synthesis of structurally important 2,3-dihydro-1H-perimidines also was demonstrated. D. functional theory calculations were also carried out to model the reaction path and to calculate the reaction profile.

Organometallics published new progress about Alkylation. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Schoettl, Sebastian published the artcileCombined molecular dynamics (MD) and small angle scattering (SAS) analysis of organization on a nanometer-scale in ternary solvent solutions containing a hydrotrope, COA of Formula: C8H18O, the main research area is mol dynamics small angle scattering nanometer scale hydrotrope; Detergentless microemulsion; Molecular dynamics; Pre-Ouzo; Small angle scattering; Surfactant-free microemulsion; Ternary mixtures; Ultraflexible microemulsion.

Mixtures of three solvents, with two immiscible liquids and a third one miscible to both – the solvotrope, may exhibit structuration. We explore the phase diagram of n-octanol/ethanol/water, where ethanol is the hydrotrope, varying composition from the water-rich side to the n-octanol-rich side at constant ethanol fraction. We resolve nanometer-sized structures exptl. by mean of four contrasts: three from Small Angle Neutron Scattering (SANS) and one from Small Angle X-ray Scattering (SAXS). On the water-rich side, we confirm the existence of droplets associated to a critical point stabilized by an excess adsorption of the hydrotrope: the ultra-flexible microemulsion (UFME) domain. The n-octanol-rich side is better described as a dynamic random network of chain-like associations of hydroxy groups. The continuous evolution from oil clusters to a dynamic network of hydroxy groups is demonstrated by the features of scattering patterns, successfully compared for all contrasts to Mol. Dynamics (MD) simulations, allowing to illustrate with snapshots the structuration of solvents. The free energy of transfer of the hydrotrope obtained from MD is low (âˆ? kBT/mol.). This study suggests that Ouzo spontaneous emulsions may be in dynamic equilibrium with a pre-Ouzo, similarly to nanoemulsions kinetically stabilized by the co-existence of a microemulsion.

Journal of Colloid and Interface Science published new progress about Aggregates. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Yijia published the artcileColloidal Capsules Assembled from Gold Nanoparticles Using Small-Molecule Hydrophobic Cross-linkers, Application of Pentaerythritol tetra(3-mercaptopropionate), the main research area is gold nanoparticle crosslinker colloidosome.

Colloidal capsules (or colloidosomes) have been studied for various applications such as therapeutic agent encapsulation, photothermal therapy, imaging, and energy storage. Emulsion-based synthesis is the most common approach for preparing colloidal capsules as it is relatively straightforward and scalable. However, while the initial formation requires only introducing the colloidal subunits into an emulsion and letting them assemble at the interface, a second step is required in order to prepare stable, covalently linked colloidal capsules, and preparing submicron colloidal capsules is quite challenging. Here, we describe a simple and quick one-step method to synthesize covalently linked, stable nanoscale colloidal capsules consisting of gold nanoparticles (NPs) (AuNP) and thiol-containing cross-linkers. Gold nanoparticle capsules (AuNCs) were formed by coating emulsion droplets containing thiol-containing cross-linkers with citrate-stabilized AuNPs. The physicochem. properties of the colloidal capsules can be tailored by changing the building blocks. In order to demonstrate this, colloidal capsules were assembled from AuNPs ranging from 5 to 20 nm in size. The use of the larger 20 nm starting particles resulted in AuNCs with a sufficiently pronounced red shift for λmax to be suitable for biol. photothermal applications, where use of a near-IR laser is strongly preferred. The AuNCs were found to be biocompatible and stable in cell culture conditions and to provide moderate heating. This demonstrates the modularity of the synthesis and the potential advantages of a one-step synthesis to prepare nanoscale gold colloidal capsules.

Langmuir published new progress about Aggregates. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Application of Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Xiangkai published the artcileLuminescent Hydrogel Based on Silver Nanocluster/Malic Acid and Its Composite Film for Highly Sensitive Detection of Fe3+, Recommanded Product: (S)-2-hydroxysuccinic acid, the main research area is silver nanocluster malic acid polymethylmethacrylate hydrogel aggregation fluorescence quenching; AIE; malic acid; self-assembly; sensor; silver nanoclusters.

Metal nanoclusters (NCs) with excellent photoluminescence properties are an emerging functional material that have rich phys. and chem. properties and broad application prospects. However, it is a challenging problem to construct such materials into complex ordered aggregates and cause aggregation-induced emission (AIE). In this article, we use the supramol. self-assembly strategy to regulate a water-soluble, atomically precise Ag NCs (NH4)9[Ag9(C7H4SO2)9] (Ag9-NCs, [Ag9(mba)9], H2mba = 2-mercaptobenzoic acid) and L-malic acid (L-MA) to form a phosphorescent hydrogel with stable and bright luminescence, which is ascribed to AIE phenomenon. In this process, the AIE of Ag9-NCs could be attributed to the non-covalent interactions between L-MA and Ag9-NCs, which restrict the intramol. vibration and rotation of ligands on the periphery of Ag9-NCs, thus inhibiting the ligand-related, non-radiative excited state relaxation and promoting radiation energy transfer. In addition, the fluorescent Ag9-NCs/L-MA xerogel was introduced into polymethylmethacrylate (PMMA) to form an excellently fluorescent film for sensing of Fe3+. Ag9-NCs/L-MA/PMMA film exhibits an excellent ability to recognize Fe3+ ion with high selectivity and a low detection limit of 0.3 μM. This research enriches self-assembly system for enhancing the AIE of metal NCs, and the prepared hybrid films will become good candidates for optical materials.

Gels published new progress about Aggregates. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Recommanded Product: (S)-2-hydroxysuccinic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Swami, K. Rama published the artcileUnraveling the role of phase modifiers in the extraction of Nd(III) from nitric acid medium in tetra-bis(2-ethylhexyl)diglycolamide in n-dodecane containing long chain aliphatic alcohols, SDS of cas: 111-87-5, the main research area is neodymium extraction nitric acid TEHDGA dodecane alc phase modifier.

Tetra-bis(2-ethylhexyl)diglycolamide (TEHDGA) alone in n-dodecane (n-DD) is unsuitable for the solvent extraction of trivalent actinides from high-level liquid waste due to the occurrence of third phase formation during the course of solvent extraction Significant concentration of long chain aliphatic alcs. ranging from 5% to 15% (V/V) have been added to the solvent phase, TEHDGA/n-DD, to control the undesirable third phase formation. The alcs. investigated were n-octanol, n-decanol, and isodecanol. To understand the role of alcs. in controlling the third phase formation, the extraction behavior of the trivalent metal ion, Nd(III), from nitric acid medium was studied in a solution of 0.2 M TEHDGA + 1 M alc. in n-DD. The equilibrium concentration of Nd(III) and nitric acid present in organic and aqueous phases were determined The organic phase obtained after extraction was subjected to dynamic light scattering studies to unravel the role of alc. phase modifiers in organic phase. The aggregate size and their distribution in organic phase was determined as a function of various parameters such as concentrations of nitric acid, Nd(NO3)3 and the nature of alc. In view of this, the aggregate size was controlled much below the limiting aggregate size required for third phase formation by these alc. phase modifiers. Even though all the alcs. investigated in the present study could bring down the aggregate size much below the limiting value, n-decanol was found to be superior to other alcs.

Journal of Molecular Liquids published new progress about Aggregates. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vervald, Alexey published the artcileDifference in deprotonation for oxygen-containing groups on sp2 and sp3 carbons, Synthetic Route of 584-02-1, the main research area is phenol benzoic acid nanodiamond deprotonation zeta potential.

Does the hybridization of the surface of carbon nanoparticles (CNPs) affect the properties of the surface carboxyl and hydroxyl groups and the features of their deprotonation in water. To answer these questions in this work the structures of graphite-and diamond-like carbon cells with OH and COOH groups optimized by the DFT method were studied. It was found that in the same suspensions the OH and COOH groups deprotonate easier being on carbon with sp2 hybridization rather than sp3. Theor. estimates have shown that in aqueous suspensions of CNPs, “”isolated”” carboxyl COOH groups on sp2/sp3 hybridized carbon sites have pKa in the ranges of 3.5-4.5/4.5-5, and the hydroxyl OH groups – in the ranges of 8.5-10/15-18, resp. The conclusions made on the basis of theor. calculations about the features of deprotonation of surface groups of CNPs are exptl. confirmed by the changes of the zeta-potentials of oxidized detonation nanodiamonds with the change of the pH of the environment.

Fullerenes, Nanotubes, and Carbon Nanostructures published new progress about Aggregates. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Synthetic Route of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Kai published the artcileClinical Significance of Galactose-Deficient IgA1 by KM55 in Patients with IgA Nephropathy, Related Products of alcohols-buliding-blocks, the main research area is IgA1 KM55 monoclonal antibody diagnosis IgA nephropathy; Complement activation; Galactose-deficient IgA1; IgA nephropathy; KM55 antibody.

Background: Aberrant galactose-deficient IgA1 mols. (Gd-IgA1) are important causal factors in IgA nephropathy (IgAN); however, the detection of Gd-IgA1 in IgAN is complicated and instable. A monoclonal antibody, KM55, which specifically recognizes Gd-IgA1 has been developed. In the present study, we further explored the clin. significance of Gd-IgA1 using KM55. Methods: In this study, we enrolled 75 patients with IgAN and 80 healthy controls and detected the plasma Gd-IgA1 levels using the KM55 ELISA method. We also stained -mesangial Gd-IgA1 deposition using KM55. Results: We observed that the levels of plasma Gd-IgA1 in IgAN patients were elevated compared to the corresponding levels of healthy controls. Patients were divided into 2 groups based on the median of Gd-IgA1. Patients with high Gd-IgA1 levels had significantly higher levels of uric acid (UA) and IgA. The other clin. manifestations demonstrated that there were no differences in age, sex, blood pressure, initial proteinuria, hematuria, estimated glomerular filtration rate and Oxford pathol. classification between the 2 groups of patients. In addition, pos. correlations were observed between Gd-IgA1 and Bb, C3a, C4d and MAC. Mesangial Gd-IgA1 was pos. in IgAN but neg. in the normal renal tissue adjacent to neoplasm. We next analyzed the correlation between plasma Gd-IgA1 and mesangial Gd-IgA1 deposition. The results showed that a high level of plasma Gd-IgA1 was related to the deposition of mesangial Gd-IgA1, although the difference was not significant. Conclusion: We verified the elevated level of plasma and -mesangial Gd-IgA1 in patients with IgAN by KM55, which provided an alternative, easy, and reliable tool for diagnosis and activity assessment of IgAN. The level of plasma Gd-IgA1 pos. correlated with levels of UA, total IgA levels, and complement activation products.

Kidney & Blood Pressure Research published new progress about Age groups. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sciukaite, Agne published the artcileContents of some bioactive compounds in Norway spruce needles as affected by short-term storage at different conditions and implications for their industrial use, Safety of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is Norway spruce needle bioactive compound.

The main aim of the research was to evaluate changes in contents of essential oils and pigments in Norway spruce needles as affected by short-term storage under different conditions as well as to assess the potential resources of winter-harvested foliage obtainable from byproducts of forest felling as a natural source of these bioactives. One- and two-year-old needles were taken for the analyses fresh (control) and after five-week storage at three different conditions: at 4°C in fridge, at -24°C in freezer and in the forest of their origin. Essential oils were isolated from needles by hydrodistillation and analyzed by gas chromatog.-mass spectrometry. Analyses of chlorophylls and carotenoids were performed spectrophotometrically. The study showed that none of the tested storage conditions of P. abies needles had significant influence on the total amounts of essential oils in them varying from 0.16% to 0.20% per dry matter (v/w) in two- and one-year-old needles, resp. Bornyl acetate was the main compound identified in the essential oils amounting to 14.47-40.04%. The mean total contents of chlorophylls amounted to 1.10 mg/g in one-year-old needles and to 1.28 mg/g in two-year-old ones measured in fresh weight Statistically significant differences were established in the levels of all the pigments analyzed between fresh material, and stored under controlled, -24°C and 4°C, conditions both of 1-yr-old and 2-yr-old needles. The highest contents of the pigments were obtained after the storage at 4°C as well as under the natural forest condition. Based on the above data and the national forestry statistics, potential yields of essential oils (6.45 kg), total chlorophylls (9.27 kg) and total carotenoids (1.32 kg) were assessed per ha of a mature sprucewood stand in Lithuania.

Industrial Crops and Products published new progress about Age groups. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Safety of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pakrieva, Ekaterina published the artcileSupported gold nanoparticles as catalysts in peroxidative and aerobic oxidation of 1-phenylethanol under mild conditions, Recommanded Product: n-Octanol, the main research area is gold nanoparticle phenylethanol peroxidative aerobic oxidation; 1-phenylethanol; DFT; TBHP; alcohol oxidation; gold; heterogeneous catalysis.

The efficiency of Au/TiO2 based catalysts in 1-phenylethanol oxidation was investigated. The role of support modifiers (La2O3 or CeO2), influence of gold loading (0.5% or 4%) and redox pretreatment atm., catalyst recyclability, effect of oxidant, (tert-Bu hydroperoxide (TBHP) or O2), as well as the optimization of exptl. parameters of the reaction conditions in the oxidation of this alc. were studied and compared with previous studies on 1-octanol oxidation Samples were characterized by temperature-programmed oxygen desorption (O2-TPD) method. XPS measurements were carried out for used catalysts to find out the reason for deactivation in 1-phenylethanol oxidation The best catalytic characteristics were shown by catalysts modified with La2O3, regardless of the alc. and the type of oxidant. When O2 was used, the catalysts with 0.5% Au, after oxidative pretreatment, showed the highest activity in both reactions. The most active catalysts in 1-phenylethanol oxidation with TBHP were those with 4% Au and the H2 treatment, while under the same reaction conditions, 0.5% Au and O2 treatment were beneficial in 1-octanol oxidation Despite the different chem. nature of the substrates, it seems likely that Au+(Auδ+) act as the active sites in both oxidative reactions. D. functional theory (DFT) simulations confirmed that the gold cationic sites play an essential role in 1-phenylethanol adsorption.

Nanomaterials published new progress about Adsorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Ke published the artcileA humidity sensor based on ionic liquid modified metal organic frameworks for low humidity detection, Safety of Pentaerythritol tetra(3-mercaptopropionate), the main research area is ionic liquid metal organic framework polyelectrolyte humidity sensor stability.

Low humidity detection has always been a challenge in the field of humidity detection. Humidity sensors base on ionic liquid modified metal organic frameworks (MOFs) derived polymer films were prepared in this work. The ionic liquid ligand was uniformly introduced in the frameworks of UIO-66 to enhance the hydrophilicity of sensing materials, the caused defects sites are beneficial for adsorption and desorption, and the MOFs based functional films were easily obtained by in situ photoinduced thiol-ene click reaction. The obtained humidity sensor exhibits a linear response in low relative humidity (RH) range (5% RH – 30% RH) with a tiny humidity hysteresis (âˆ?.2% RH) and short response time to humidity change (response/recovery time is 0.6 s/1.7 s, resp.).

Sensors and Actuators, B: Chemical published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Safety of Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts