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Recommanded Product: 2834-05-1. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Sepiolite modified with phosphonium ionic liquids as anticorrosive pigment for epoxy coatings. Author is Henriques, Ruan R.; Soares, Bluma G..

The performance of sepiolite modified with different phosphonium-based ionic liquids (SepIL) as anti-corrosive pigment for epoxy resin (ER) coatings were discussed in this paper. The ionic liquids (IL) used to functionalize Sep clay mineral included trihexyl-(tetradecyl)phosphonium bistriflimide (IL1) and ethyl-tri(butyl)-phosphonium diethylphosphate (IL2) as com. IL and the synthesized 11-carboxyundecyl-(triphenyl)-phosphonium bromide (IL3). All SepIL samples were characterized by Fourier transform IR (FTIR) spectroscopy, thermogravimetric anal. (TGA), elemental anal. (CHN) and X-ray diffraction (XRD). The effect of the incorporation of Sep and SepIL on the rheol. properties of the ER-based dispersions and on anticorrosion properties of epoxy networks cured with isophorone diamine was investigated. The ER-based coatings loaded with Sep modified with different ionic liquids presented enhanced the anticorrosive properties with outstanding barrier properties against the diffusion of the electrolyte solution, as indicated by electrochem. impedance spectroscopy (EIS). The superior corrosion resistance of ER loaded with SepIL was also kept with scratched coating, due to the inhibition activity of the ionic liquid against corrosion process.

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Metal catalyst and ligand design,
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Mangaiyarkarasi, R.; Premlatha, S.; Khan, Rajkumar; Pratibha, R.; Umadevi, S. published an article about the compound: 11-Bromoundecanoic acid( cas:2834-05-1,SMILESS:O=C(O)CCCCCCCCCCBr ).Related Products of 2834-05-1. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:2834-05-1) through the article.

A new ionic liquid crystal (ILC) bearing a biphenyl core and a terminal imidazolium moiety was synthesized which exhibited two enantiotropic smectic A mesophases having a wide phase range. Interestingly one of these mesophases exhibited the features of a biaxial phase. A composite electrode containing the synthesized ILC and carbon paste (CP) was fabricated and employed for the successful electrochem. detection of a clin. important analgesic drug, paracetamol. The ILC-CP composite electrode displayed an enhanced current response due to a versatile combination of properties namely, good ionic conductivity, increased edge-site defects and excellent electrocatalytic activity. The composite electrode responded quickly upon addition of paracetamol and the peak current of anodic oxidation enhanced at lower over potential compared to the carbon paste electrode (CPE). Differential pulse voltammetric (DPV) experiments for the detection of paracetamol yielded acceptable linear range from 0 to 120μM with a good detection limit of 2.8μM. Interference test results showed anti-interfering ability in presence of a mixture of interferents. The electrode stability was evaluated from DPV current response and 92.6% current was retained after one month which revealed the excellent stability. The electrode was successfully applied for the direct determination of paracetamol in pharmaceutical formulations.

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Metal catalyst and ligand design,
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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 2834-05-1, is researched, SMILESS is O=C(O)CCCCCCCCCCBr, Molecular C11H21BrO2Journal, Industrial & Engineering Chemistry Research called Crystallinity and Water Vapor Permeability of n-Alkane, Alcohol, Aldehyde, and Fatty Acid Constituents of Natural Waxes, Author is Leyva-Gutierrez, Francisco M. A.; Wang, Tong, the main research direction is crystallinity water vapor permeability alkane alc aldehyde fatty acid.Synthetic Route of C11H21BrO2.

Natural waxes are valuable industrial products consisting of complex chem. mixtures To probe the structure-function role of select constituents, model n-alkanes, alcs., aldehydes, and fatty acids of C18-19, C22-23, and C26-27 carbon chain lengths were synthesized and analyzed via calorimetry and X-ray powder diffraction. Pure compounds and binary mixtures crystallized into monoclinic (M), triclinic (T), and orthorhombic (O) lattices or combinations thereof. The C26 aldehyde formed an O lattice and exhibited one solid-solid phase transition similar to n-alkanes. The water vapor permeability (WVP) of model systems cast as films was determined For pure compounds, WVP decreased in the following order: fatty acid > even n-alkane > odd n-alkane > alc. > aldehyde. Increasing carbon chain length, which translates to increasing unit cell volume, decreased WVP. Binary mixtures generally exhibited a more complex relationship with WVP. These findings may be applicable to the agricultural postharvest, pharmaceutical, and paperboard coating industries.

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Metal catalyst and ligand design,
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Recommanded Product: 11-Bromoundecanoic acid. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Conversion of curved assemblies into two dimensional sheets. Author is Deshmukh, Gunvant; Krishnamoorthy, Kothandam.

The design and preparation of organic two dimensional (O2D) sheets and their conversion to curved nanostructures is in its infancy. To convert a flat structure into a curved structure, the mol. must have multiple interaction possibilities and an in-built twist. The conjugated small mol. iso-Indigo (i-Indigo) comprises two Ph rings that are twisted (the dihedral angle is 15°) at the junction. The i-Indigo has been connected with moieties that impart hydrogen bonding and van der Waals interactions. Due to the presence of the π cloud in i-Indigo, π-π interactions are also present in the mol. While all three interactions are in operation, rings and toroids are formed. Upon addition of hydrogen bonding competing solvents, the rings and toroids unravel to form O2D sheets. Control mols. that don’t have hydrogen bonding moieties and π-π interactions form random assemblies. Please note that the rings, toroids and O2D sheets are formed in a single solvent by simple dissolution, unlike previous approaches that involve multiple steps and solvents.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Castor Oil-Based Bioplastics via Polyesterification: Synthesis, Characterization, and Functionalization, the main research direction is castor oil based bioplastics polyesterification functionalization.COA of Formula: C11H21BrO2.

Synthesis and application of biobased polymers are at the forefront of polymer science. Herein, we report the synthesis, characterization, and functionalization of castor oil-based bioplastics. At first, polymer P1 was synthesized via polyesterification by using monomer 11-bromoundecanoic acid (1) to demonstrate the feasibility of this step-growth polymerization method. The success of this polycondensation technique relies on the high substitution efficiency between terminal groups, carboxylic acid, and carbon-bromide moieties under alk. conditions. Subsequently, copolymers P2-P5 with varied compositions were obtained by random copolymerization of monomers 1 and 6-bromohexanoic acid (2) in different feed ratios. Linear pos. correlation is disclosed between the crystallization (Tc) and melting (Tm) temperatures of P1-P5 and the molar fraction of 1 within these specimens. Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) results illustrate good crystallinity of these bioplastics. Furthermore, the degradation of polymers P1-P5 is propelled by an external basic environment while hindered by their intrinsic hydrophobicity, indicating that alkalinity and composition are two essential factors to manipulate the degradation behaviors of biobased polyesters in the bulk state. Ultimately, polymerization of 1 in the presence of 1-pyrenebutyric acid (3), an end-capping agent, was carried out to yield α-pyrene functionalized polymer P7. This material is capable of serving as a practical fluorescent probe and multiwalled carbon nanotube (MWNT) dispersion stabilizer. Polyesterification reported herein represents a facile and cost-effective synthetic strategy and shows great prospects in sustainable polymer materials.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Computed Properties of CH2Cu2O5. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Basic copper carbonate, is researched, Molecular CH2Cu2O5, CAS is 12069-69-1, about Calcite modification of agricultural waste biochar highly improves the adsorption of Cu(II) from aqueous solutions. Author is Wang, Shenwan; Zhong, Shuang; Zheng, Xiaoyan; Xiao, Dao; Zheng, Lili; Yang, Yang; Zhang, Haide; Ai, Binling; Sheng, Zhanwu.

Calcite-modified biochar was developed as an inexpensive adsorbent for heavy metal immobilization. The biochar was prepared by pyrolysis of coconut shells under a N2 atmosphere at 600°C and then modified by mixing with calcite in an aqueous solution The surface area of the modified coconut biochar (CAL/BC) was relatively small (9.32 m2·g-1). The CAL/BC surface had CO, CO2-3 and CC functional groups. The maximum adsorption capacity of Cu(II) on CAL/BC was 213.9 mg·g-1 at 25°C, and the removal efficiency was maintained at 87.7% even after four adsorption-desorption cycles. The adsorption process was described well by the pseudo-second order model (R2 = 0.9445-0.9976) and Langmuir adsorption model (R2 = 0.9908-0.9934), which meant that monolayer and chem. adsorption dominated. The dominant adsorption mechanisms of Cu(II) on CAL/BC were surface complexation, precipitation, and ion exchange. This study suggests that biochars prepared from two inexpensive materials (calcite and coconut shells) can be used as an adsorbent for effectively removing heavy metals from simulated aqueous solutions

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Metal catalyst and ligand design,
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Kalakewich, Keyton; Iuliucci, Robbie; Mueller, Karl T.; Eloranta, Harriet; Harper, James K. published the article 《Monitoring the refinement of crystal structures with 15N solid-state NMR shift tensor data》. Keywords: monitoring refinement crystal structure solid state NMR shift tensor.They researched the compound: DL-Histidine monohydrochloride monohydrate( cas:123333-71-1 ).Related Products of 123333-71-1. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:123333-71-1) here.

The 15N chem. shift tensor is extremely sensitive to lattice structure and a powerful metric for monitoring d. functional theory refinements of crystal structures. These refinements include lattice effects and are applied here to five crystal structures. All structures improve based on a better agreement between exptl. and calculated 15N tensors, with an average improvement of 47.0 ppm. Structural improvement is further indicated by a decrease in forces on the atoms by 2-3 orders of magnitude and a greater similarity in atom positions to neutron diffraction structures. These refinements change bond lengths by more than the diffraction Errors including adjustments to X-Y and X-H bonds (X, Y = C, N, and O) of 0.028 ± 0.002 Å and 0.144 ± 0.036 Å, resp. The acquisition of 15N tensors at natural abundance is challenging and this limitation is overcome by improved 1H decoupling in the FIREMAT method. This decoupling dramatically narrows linewidths, improves signal-to-noise by up to 317%, and significantly improves the accuracy of measured tensors. A total of 39 tensors are measured with shifts distributed over a range of >400 ppm. Overall, exptl. 15N tensors are at least 5 times more sensitive to crystal structure than 13C tensors due to N’s greater polarizability and larger range of chem. shifts. (c) 2015 American Institute of Physics.

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Metal catalyst and ligand design,
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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called A Self-Cross-Linking Supramolecular Polymer Network Enabled by Crown-Ether-Based Molecular Recognition, published in 2020-01-29, which mentions a compound: 2834-05-1, Name is 11-Bromoundecanoic acid, Molecular C11H21BrO2, Application of 2834-05-1.

Supramol. polymers based on host-guest mol. recognition have emerged as promising platforms for the development of smart materials. However, the studies on them are primarily conducted in solution and/or in the gel state. In contrast, little is known about dynamic properties and applications of supramol. polymers in bulk. Herein, we present a self-crosslinking supramol. polymer network (SPN) as a model system to understand the bulk properties controlled by noncovalent interactions. Specifically, the SPN monomer is composed of two benzo-21-crown-7 (B21C7) host units and two dialkylammonium salt guest moieties on a four-arm core, wherein complementary host-guest complexation drives the formation of the SPN with [2]pseudorotaxane linkages between B21C7 and ammonium motifs. The dynamic and reversible behaviors of the linkages are evaluated by measurement of viscoelasticity. The results indicate that the host-guest mol. recognition becomes highly dynamic at elevated temperature Moreover, the relatively high activation energy of the SPN manifests itself as a new type of thermoplastic material with network topol. freezing glass transition. Finally, we demonstrate how these findings provide insights into the malleability and processability of the SPN by simple demos. The fundamental understanding gained from the research on this SPN in bulk will facilitate the advancement and application of supramol. materials.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Sen’i Gakkaishi called Bio-based man-made fibers for the next generation, Author is Mochizuki, Masatsugu, which mentions a compound: 2834-05-1, SMILESS is O=C(O)CCCCCCCCCCBr, Molecular C11H21BrO2, Product Details of 2834-05-1.

In this paper, the author first explains the phys. characteristics and manufacturing process of the latest bio-based polymers. Next, the application development of these as next-generation fiber materials will be described, focusing on polylactic acid fibers and non-woven fabrics, which have high potential. The author will describe the current status of bio-based polyamides, polycarbonates, and polyurethanes, and finally, practical application has progressed in recent years.

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Metal catalyst and ligand design,
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Reference of 11-Bromoundecanoic acid. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Expansion of the structure-activity relationship of branched chain fatty acids: Effect of unsaturation and branching group size on anticancer activity. Author is Roy, Ritik; Roseblade, Ariane; Rawling, Tristan.

Branched chain fatty acids (BCFAs) are a class of fatty acid with promising anticancer activity. The BCFA 13-methyltetradecanoic acid (13-MTD) inhibits tumor growth in vivo without toxicity but efficacy is limited by moderate potency, a property shared by all known BCFAs. The mechanism of action of BCFAs has not been fully elucidated, and in the absence of a clearly defined target optimization of BCFA potency must rely on structure-activity relationships. Our current understanding of the structural features that promote BCFA anticancer activity is limited by the low structural diversity of reported BCFAs. The aim of this study was to examine the effects of two new structural modifications- unsaturation and branching group size- on BCFA activity. Thus, homologous series of saturated and cis-Δ11 unsaturated BCFAs were synthesized bearing Me, Et, Pr and Bu branching groups, and were screened in vitro for activity against three human cancer cell lines. Potencies of the new BCFAs were compared to 13-MTD and an unbranched monounstaurated fatty acid (MUFA) bearing a cis-Δ11 double bond. The principal findings to emerge were that the anticancer activity of BCFAs was adversly affected by larger branching groups but significantly improved by incorporation of a cis-Δ11 double bond into the BCFA alkyl chain. This study provides new structure-activity relationship insights that may be used to develop BCFAs with improved potency and therapeutic potential.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI