Tag: M.W=100-200

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 108-85-0, Name is Bromocyclohexane, molecular formula is C6H11Br. In an article, author is Ansari, Anees A.,once mentioned of 108-85-0, Safety of Bromocyclohexane.

Synthesis, optical properties and toxic potentiality of photoluminescent lanthanum oxide nanospheres

Spherical, luminescent La2O3:RE(RE = Pr and Eu) nanospheres (NSs) having an average grain size of 90-130 nm were prepared by homogeneous urea-based decomposition. Their toxic potentiality was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and neutral red uptake (NRU) assays. X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray analysis, Brunauer-Emmett-Teller surface area analysis, Fourier-transform infrared spectroscopy, FT-Raman spectroscopy, and photoluminescence spectroscopy were conducted to characterize the chemical composition, crystallinity, morphology, surface chemistry, texture, optical properties, and luminescent properties of the prepared materials. SEM and TEM micrographs clearly revealed a spherical crystalline structure with a smooth surface and narrow size distribution. The emission spectrum of La2O3:Eu NSs revealed a dominant magnetic-dipole (D-5(0)-> F-7(1)) transition at 589 nm and an electric-dipole (D-5(0)-> F-7(2)) transition at 614 nm; NSs produced a strong orange-red color when irradiated with UV light. The remarkable luminescence efficiencies of these emission transitions suggested that the nanophosphor is highly crystalline. MTT and NRU assays were conducted to evaluate the concentration-dependent toxicity of NSs on MCF-7 and A-549 cell lines. Both assays indicated that cell viability decreases with increasing NS doses, owing to increased exposure to the metal oxide surface and increased crystalline size. Good cell viability was observed at low concentrations, but toxicity increased at higher NS doses. Because of their excellent luminescent and optical features, the as-prepared nanomaterials have potential applications in laser-based biological events.

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Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 766-96-1, Name is 1-Bromo-4-ethynylbenzene. In a document, author is Gedda, Murali, introducing its new discovery. Name: 1-Bromo-4-ethynylbenzene.

Ruddlesden-Popper-Phase Hybrid Halide Perovskite/Small-Molecule Organic Blend Memory Transistors

Controlling the morphology of metal halide perovskite layers during processing is critical for the manufacturing of optoelectronics. Here, a strategy to control the microstructure of solution-processed layered Ruddlesden-Popper-phase perovskite films based on phenethylammonium lead bromide ((PEA)(2)PbBr4) is reported. The method relies on the addition of the organic semiconductor 2,7-dioctyl[1]benzothieno[3,2-b]benzothiophene (C-8-BTBT) into the perovskite formulation, where it facilitates the formation of large, near-single-crystalline-quality platelet-like (PEA)(2)PbBr4 domains overlaid by a approximate to 5-nm-thin C-8-BTBT layer. Transistors with (PEA)(2)PbBr4/C-8-BTBT channels exhibit an unexpectedly large hysteresis window between forward and return bias sweeps. Material and device analysis combined with theoretical calculations suggest that the C-8-BTBT-rich phase acts as the hole-transporting channel, while the quantum wells in (PEA)(2)PbBr4 act as the charge storage element where carriers from the channel are injected, stored, or extracted via tunneling. When tested as a non-volatile memory, the devices exhibit a record memory window (>180 V), a high erase/write channel current ratio (10(4)), good data retention, and high endurance (>10(4) cycles). The results here highlight a new memory device concept for application in large-area electronics, while the growth technique can potentially be exploited for the development of other optoelectronic devices including solar cells, photodetectors, and light-emitting diodes.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 766-96-1 help many people in the next few years. Name: 1-Bromo-4-ethynylbenzene.

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Category: bromides-buliding-blocks, 95-56-7, Name is 2-Bromophenol, molecular formula is C6H5BrO, belongs to bromides-buliding-blocks compound. In a document, author is Potikha, Lyudmila M., introduce the new discover.

A novel method for the synthesis of pyrido[1,2-b][2]benzazepines on the basis of 2-(bromomethyl)benzophenones and 2-(bromomethyl)benzaldehyde

A novel method for the synthesis of pyrido[1,2-b][2]benzazepine derivatives is based on the reaction of 2-(bromomethyl)benzophenones and 2-(bromomethyl)benzaldehyde with 2-methylpyridines. The route of synthesis of 6H-pyrido[1,2-b][2]benzazepinium salts includes several steps with the possibility of isolating intermediate 1-benzyl-2-methylpyridinium and 11-aryl-11-hydroxy-11,12-dihydro-6Hpyrido[1,2-b][2]benzazepinium bromides. The efficiency of dehydration of intermediate carbinols increases with the use of protic solvents, an increase in heating time, and in the presence of electron-withdrawing substituents in the benzazepine moiety. The structure of the reaction products was proved by mass spectrometry, IR and one- and two-dimensional correlation NMR spectroscopy.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 95-56-7. Category: bromides-buliding-blocks.

Chemistry, like all the natural sciences, begins with the direct observation of nature— in this case, of matter.1575-37-7, Name is 4-Bromobenzene-1,2-diamine, SMILES is NC1=CC=C(Br)C=C1N, belongs to bromides-buliding-blocks compound. In a document, author is Park, Sunghwan, introduce the new discover, Category: bromides-buliding-blocks.

Highly H2O permeable ionic liquid encapsulated metal-organic framework membranes for energy-efficient air-dehumidification

Isothermal membrane-based air dehumidification (IMAD) is much more energy-efficient and economical than traditional air-dehumidification technologies. There are, however, no practical IMAD process technologies currently available mainly due to limitations of current membranes. Ionic liquids (ILs) are a promising air-dehumidification membrane material. Current supported IL membranes suffer from poor stability, limiting their performances. Herein, we propose new stable IL membranes, encapsulated IL membranes (EILMs) by encapsulating 1-butyl-3-methylimidazolium bromide ([C4MIM][Br]) into ultrathin polycrystalline UiO-66-NH2 metal-organic framework membranes via a ship-in-a-bottle method. The stability of IL membranes is significantly enhanced due to the IL entrapped in the pore cages of UiO-66-NH2. The EILMs show unprecedentedly high H2O permeance (similar to 2.36 x 10(-4) mol m(-2) s(-1) Pa-1), an order of magnitude greater than that of the most permeable air-dehumidification membranes reported so far. Furthermore, the encapsulated [C4MIM][Br] drastically increases the H2O/N-2 separation factor to similar to 1560, satisfying the minimally required H2O/N-2 separation performance for commercially viable air-dehumidification.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 1575-37-7 is helpful to your research. Category: bromides-buliding-blocks.

Application of 766-96-1, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 766-96-1, Name is 1-Bromo-4-ethynylbenzene, SMILES is C1=C(C=CC(=C1)Br)C#C, belongs to bromides-buliding-blocks compound. In a article, author is Li, Xiaohua, introduce new discover of the category.

A flexible silica aerogel with good thermal and acoustic insulation prepared via water solvent system

In this paper, transparent flexible hydrophobic silica aerogels were prepared by replacing the traditional alcohol solvent with water, using methyltriethoxysilane (MTES) and cetyltrimethylammonium bromide (CTAB), via acid-base two steps method and CO2 supercritical drying. The role of surfactant CTAB in the gel-sol process was revealed, and the effect of CTAB concentration on the gel structure was analyzed. With the concentration increasing, the skeleton structure of the gel gradually changed from coarse graininess to continuous fiber. The obtained aerogels showed good elastic properties. With the increasing of density, the elastic modulus of aerogels gradually increased, so that the length could be restored to 63% of the original length after 50% compression strain. Aerogels also had low thermal conductivity and good thermal stability. The thermal conductivity at room temperature was only 0.0215 W/(m center dot K) and the initial decomposition temperature was up to 511 degrees C. For the aerogel with thickness of 11.8 mm and density of 60 mg/cm(3), it showed good sound absorption and sound insulation properties. When the sound frequency was 2000 Hz, the sound absorption coefficient was 0.91, and the sound transmission loss between 500 and 1600 Hz was 13-21 dB. This work provides a facile approach to fabricate lightweight and flexible silica aerogels for thermal and acoustic insulation applications.

Application of 766-96-1, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 766-96-1.

Electric Literature of 95-56-7, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 95-56-7, Name is 2-Bromophenol, SMILES is OC1=CC=CC=C1Br, belongs to bromides-buliding-blocks compound. In a article, author is Zeng, Linxiang, introduce new discover of the category.

2D-3D heterostructure enables scalable coating of efficient low-bandgap Sn-Pb mixed perovskite solar cells

Low-bandgap photovoltaic absorbers based on mixed tin-lead (Sn-Pb) halide perovskites offer promising opportunities to fabricate efficient multi-junction solar cells. However, the current Sn-Pb mixed perovskite solar cells (PSCs) were mainly prepared using lab-scale spin-coating, greatly hindering their application for large-area device fabrication. Here, we report a simple and robust methodology for scalable deposition of dense and uniform Sn-Pb mixed perovskite films by one-step blade coating. High quality perovskite films with different Sn-Pb ratios are readily prepared by vacuuming the freshly coated precursor films followed by an anneal process. Solar cells based on these bladed Sn-Pb mixed perovskite absorbers showed decent photovoltaic behaviors. Further enhancement of device performance was realized via surface defects passivation using phenethy-lammonium bromide (PEABr). It was found that the formation of a thin layer of 2D Ruddlesden-Popper perovskite on top of 3D bulk perovskite significantly suppressed charge recombination. As a consequence, the open-circuit voltage (V-OC) of the solar cells (E-g = 1.35 eV) was dramatically lifted from 0.71 V to 0.78 V, yielding high efficiencies of over 15%. Moreover, notable improvement in shelf and moisture stability was observed due to the protection barrier of the 2D perovskite capping layer.

Electric Literature of 95-56-7, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 95-56-7.

Related Products of 5162-44-7, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 5162-44-7, Name is 4-Bromo-1-butene, SMILES is C=CCCBr, belongs to bromides-buliding-blocks compound. In a article, author is Chen, Wu-Ya, introduce new discover of the category.

M-keratin nano-materials create a mineralized micro-circumstance to promote proliferation and differentiation of DPSCs

As traditional root canal obturation leads to the loss of the biological activity of the tooth, it is necessary to develop a material that promotes the regeneration of dental tissue. However, this remains a challenging task. Our study aims to construct a mineralized material to support the proliferation and differentiation of dental pulp stem cells (DPSCs), and to explore a new strategy for the treatment of pulp tissue necrosis. Mineralized keratin (M-keratin), defined as keratin that has been mineralized in simulated body fluid, was first harvested to construct the root canal filling material. Characterizations indicated that new substances or components were formed on the surface of keratin particles after mineralization, and the morphology of the keratin was changed. M-keratin promoted the growth, proliferation, and differentiation of DPSCs. After cultivation with M-keratin, DPSCs exhibited more extracellular matrix proteins interacting with the culture interface, the number of these cells increased significantly, and the 3-[4,5-dimethylthiazol-2-yl-]-2,5-diphenyltetrazolium bromide values of cells in the experimental group also increased. Meanwhile, signs that the DPSCs began to differentiate into odontoblasts were observed or detected by alizarin red S staining, ELISA, RNA-Seq, and western blot. We hope that this study will contribute to the development of a new material that promotes the regeneration of dental tissue as well as providing new ideas and strategies for the treatment of dental pulp disease.

Related Products of 5162-44-7, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 5162-44-7 is helpful to your research.

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 615-36-1, Name is 2-Bromoaniline, molecular formula is C6H6BrN. In an article, author is Mao, Fengxia,once mentioned of 615-36-1, Computed Properties of C6H6BrN.

miR-149 inhibits cell proliferation and enhances chemosensitivity by targeting CDC42 and BCL2 in neuroblastoma

Background Neuroblastoma (NB) is one of most common childhood tumors with high mortality among children worldwide. microRNAs (miRNAs) have been reported to play essential roles in the pathogenesis and therapeutics of NB. However, the role of miR-149 and its mechanism remain poorly understood. Main methods The expression levels of miR-149, cell division cycle 42 (CDC42) and B-cell lymphoma 2 (BCL2) were measured in NB tissues or cells by quantitative real-time polymerase chain reaction or western blot. Cell proliferation was measured by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and colony formation assays. Cell apoptosis was detected by flow cytometry. Chemosensitivity of NB cells to doxorubicin (Dox) was analyzed by MTT assay. The interaction between miR-149 and CDC42 or BCL2 was explored by luciferase activity and RNA immunoprecipitation analyses. Results Our data indicated that low expression of miR-149 was displayed in NB tissues and cells and associated with poor survival rate. Overexpression of miR-149 inhibited cell proliferation and colony formation but promoted cell apoptosis and chemosensitivity to Dox in NB cells. Moreover, CDC42 and BCL2 were targeted by miR-149. Additionally, CDC42 and BCL2 mRNA levels were elevated in NB tissues and cells and restoration of CDC42 or BCL2 reversed the regulatory effect of miR-149 on NB progression. Conclusion Our data suggested that miR-149 suppressed cell proliferation and improved Dox chemosensitivity by regulating CDC42 and BCL2 in NB, providing a novel avenue for treatment of NB.

Interested yet? Keep reading other articles of 615-36-1, you can contact me at any time and look forward to more communication. Computed Properties of C6H6BrN.

In an article, author is Zhang Xiao-lei, once mentioned the application of 766-96-1, Computed Properties of C8H5Br, Name is 1-Bromo-4-ethynylbenzene, molecular formula is C8H5Br, molecular weight is 181.0293, MDL number is MFCD00168822, category is bromides-buliding-blocks. Now introduce a scientific discovery about this category.

Effects of intradermal needle therapy plus pinaverium bromide on gastrointestinal hormone levels in irritable bowel syndrome-diarrhea patients

Objective To observe the clinical efficacy difference in treating irritable bowel syndrome-diarrhea (IBS-D) of liver-qi stagnation and spleen-deficiency pattern with different treatment protocols, and the effects on serum levels of 5-hydroxytryptamine (5-HT), substance P (SP) and vasoactive intestinal peptide (VIP), for unveiling the mechanism of intradermal needle therapy plus pinaverium bromide in treating IBS-D. Methods A total of 123 IBS-D patients were divided into an observation group, a Western medication group and an integrated Western and Chinese medication group using the random number table method, with 41 cases in each group. The Western medication group was given oral pinaverium bromide, 50 mg each time and 3 times a day. The integrated Western and Chinese medication group was given additional Chinese herbal medicine Tong Xie Yao Fang, one dose each day. The observation group was given additional intradermal needle therapy on the basis of the Western medication group. The whole intervention lasted for 6 weeks. Before and after treatment, the scores of gastrointestinal symptoms, traditional Chinese medicine (TCM) symptoms, irritable bowel syndrome (IBS) symptom severity scale (IBS-SSS) and IBS quality of life (IBS-QOL) questionnaire, as well as the serum levels of 5-HT, SP and VIP were observed. The clinical efficacy was estimated. Results The total effective rate was 92.7% in the observation group, 68.3% in the Western medication group and 78.1% in the integrated Western and Chinese medication group. The total effective rate was higher in the observation group than in the other two groups, and higher in the integrated Western and Chinese medication group than in the Western medication group, showing statistical significance (all P<0.05). After treatment, the scores of gastrointestinal symptoms, TCM symptoms and IBS-SSS showed significant decreases in the three groups, presenting statistical significance compared with the baseline (all P<0.05); the scores of gastrointestinal symptoms, TCM symptoms and IBS-SSS were notably lower in the observation group than in the other two groups (all P<0.05), and lower in the integrated Western and Chinese medication group than in the Western medication group (all P<0.05). After treatment, the eight component scores of IBS-QOL showed significant increases in the three groups compared with the baseline (all P<0.05); the eight component scores in IBS-QOL were significantly higher in the observation group than in the other two groups (all P<0.05), and higher in the integrated Western and Chinese medication group than in the Western medication group (all P<0.05). After treatment, the serum levels of 5-HT, SP and VIP decreased markedly in the three groups compared with the baseline (all P<0.05); the serum levels of 5-HT, SP and VIP were significantly lower in the observation group than in the other two groups (all P<0.05), and lower in the integrated Western and Chinese medication group than in the Western medication group (P<0.05). Conclusion Treatment with intradermal needle therapy plus pinaverium bromide results in significant improvements in the gastrointestinal symptoms and quality of life in patients with IBS-D of liver-qi stagnation and spleen deficiency pattern, and effectively regulates the gastrointestinal hormone production. If you are interested in 766-96-1, you can contact me at any time and look forward to more communication. Computed Properties of C8H5Br.

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 615-36-1, Name is 2-Bromoaniline, formurla is C6H6BrN. In a document, author is Liao, Xiaobin, introducing its new discovery. Application In Synthesis of 2-Bromoaniline.

New perspective of Br-‘s role on NDMA formation from daminozide (DMNZD) during ozonation

N-nitrosodimethylamine (NDMA) has recently been discovered to generate from daminozide (DMNZD) during ozonation. Moreover, its formation is affected by the presence of bromine ion (Br-) in water, but the mechanism is still unclear. In this study, the effect of Br- on NDMA formation from DMNZD during ozonation at various oxidation conditions (ozone dosages, pH) and distinct water parameters was studied. In addition, the transformation pathways with/without Br- were determined. The results demonstrated that low levels of Br- promoted NDMA formation from DMNZD during ozonation. When Br- dosages increased from 0 to 1 mu M, the concentration of NDMA augmented from 138 to 195.5 mu g/L. However, when Br- concentration raised to 100 mu M, NDMA amounts dropped to 80 mu g/L. Increasing pH can raise the ratio of deprotonated DMNZD no matter with or without Br-, and promote its reaction with O-3 molecular to achieve the maximum NDMA formation at pH = 7. The amounts of NDMA decreased dramatically (from 155 to 74 mu g/L) when HCO3- dosages increased from 0 to 160 mu M with 0.1 mu M Br-, however, its concentration increased remarkably (from 155 to 225 mu g/L) with increasing SO42- (from 0 to 20 mu M). Low levels of HA (0.1-0.2mg/L) boosted NDMA formation while relatively abundant of HA (>= 0.4 mg/L) suppressed its formation. In addition, the presence of NOM inhibited NDMA formation from DMNZD during ozonation no matter Br- existed or not. Based on the results of LC/MS/MS, GC/MS and IC-MS, the transformation pathways of DMNZD with/without Br(-)during ozonation were proposed. This study provided new insights into the role of Br- on NDMA formation from typical amine compounds during ozonation. (C) 2019 Elsevier B.V. All rights reserved.

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