Tag: M.W:200-300

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 2834-05-1, is researched, Molecular C11H21BrO2, about Gold Nanoparticles Thin Films with Thermo- and Photoresponsive Plasmonic Properties Realized with Liquid-Crystalline Ligands, the main research direction is gold nanoparticle film thermoresponsive photoresponsive plasmon liquid crystalline ligand; liquid crystals; nanoparticles; photoresponsive materials; self-assembly; surface plasmon resonance.Product Details of 2834-05-1.

Robust synthesis of large-scale self-assembled nanostructures with long-range organization and a prominent response to external stimuli is critical to their application in functional plasmonics. Here, the 1st example of a material made of liquid crystalline nanoparticles which exhibits UV-light responsive surface plasmon resonance in a condensed state is presented. To obtain the material, metal cores are grafted with 2 types of organic ligands. A promesogenic derivative softens the system and induces rich liquid crystal phase polymorphism. Second, an azobenzene derivative endows nanoparticles with photoresponsive properties. Nanoparticles covered with a mixture of these ligands assemble into long-range ordered structures which exhibit a novel dual-responsivity. The structure and plasmonic properties of the assemblies can be controlled by a change in temperature as well as by UV-light irradiation These results present an efficient way to obtain bulk quantities of self-assembled nanostructured materials with stability that is unattainable by alternative methods such as matrix-assisted or DNA-mediated organization.

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Metal catalyst and ligand design,
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Reference of 11-Bromoundecanoic acid. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Development of technetium-99m labeled ultrafine gold nanobioconjugates for targeted imaging of folate receptor positive cancers. Author is Kumar, Dheeraj; Sakhare, Navin; Das, Soumen; Kale, Pooja; Mathur, Anupam; Mirapurkar, Shubhangi; Muralidharan, Sheela; Chaudhari, Pradip; Mohanty, Bhabani; Ballal, Anand; Patro, Pankaj.

The present work aims to develop and evaluate a radioactive technetium-99m (99mTc) labeled gold nanoparticle (NP) preparation modified with folic acid, so as to diagnose folate receptor pos. cancers viz. ovarian, breast, etc.11-Bromoundecanoic acid (UA) was synthetically modified both with folic acid and Hydrazinonicotinic acid (HYNIC) chelate at the carboxylic acid end and subsequently converted to thiol functionality at the bromo terminal to yield folic acid-UA-SH and HYNIC-UA-SH ligands resp. Gold NPs modified with folic acid and HYNIC chelator were obtained on direct addition of folic acid-UA-SH and HYNIC-UA-SH to chloroauric acid in polysorbate 80 solution under reducing conditions. Inhibition of [3H]folic acid with functionalized gold nanoparticle revealed affinity towards FR pos. KB cell lines with an IC50 9 μM. Biodistribution studies of 99mTc-labeled gold NP preparation in SCID mice bearing KB tumor showed an uptake of 1.39 ± 0.18%ID/g in tumor and 5.48 ± 0.72%ID/g in kidneys at 3 h post-injection. In vivo distribution in folic acid pre-treated animals could not establish the specificity towards folate receptors. Biol. evaluation of functionalized gold NP showed affinity towards FR pos. cancer cell lines. 99mTc-labeled NP exhibited target uptake in both in vitro and in vivo models, but folic acid inhibition could not establish the target specificity.

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

Quality Control of 11-Bromoundecanoic acid. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Molecular Conformation in Charge Tunneling across Large-Area Junctions. Author is Du, Chuanshen; Norris, Sean R.; Thakur, Abhishek; Chen, Jiahao; VanVeller, Brett; Thuo, Martin.

Self-assembled monolayers are predicated on thermodn. equilibrium; hence, their properties project accessible relaxation pathways. Herein, we demonstrate that charge tunneling correlates with conformational degrees of freedom(s). Results from open chain and cyclic head groups show that, as expected, distribution in tunneling data correlates with the orientation of the head group, akin to the odd-even effect and more importantly the degree of conformational freedom, but fluctuates with applied bias. Trends in nature of distributions in c.d. illuminate the need for higher statistical moments in understanding these rather dynamic systems. We employ skewness, kurtosis, and estimation plots to show that the conformational degree of freedom in the head group significantly amplifies the odd-even effect and may lead to enhanced or perturbed tunneling based on whether the head group is on an odd- or even-parity spacer.

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

Related Products of 2834-05-1. 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: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Castor oil biorefinery: Conceptual process design, simulation and economic analysis. Author is Dimian, Alexandre C.; Iancu, Petrica; Plesu, Valentin; Bonet-Ruiz, Alexandra-Elena; Bonet-Ruiz, Jordi.

The paper presents the conceptual design of a castor oil biorefinery. Castor oil contains over 90% ricinoleic acid (12-hydroxy-9-octadecenoic) triglyceride, a versatile functional mol. Fatty Me ricinoleic ester (FAMRE) is the key building block. This can be valorised as biodiesel, but more profitable is making biochems., namely high-value polyamides. The goal is the conceptual design, simulation and economic anal. of a biorefinery processing 80 ktpy castor oil, equally shared between biodiesel and biochems. The process synthesis work is based on research papers and patents, supported by simulation with Aspen Plus . The biorefinery involves three plants: transesterification, pyrolysis and amination. Two innovative technologies are developed for transesterification, by heterogeneous catalysis in variable-time PFR and by homogeneous catalysis in reactive-extraction device. The reactors are simulated by employing detailed kinetics such that the ester composition fulfils the specifications set by the quality norms for biodiesel. Both methods result in compact and low energy processes, but the first delivers more valuable high-purity glycerol. FAMRE pyrolysis supplies heptanal, a valuable intermediate for specialties, and Me undecenoate, converted further to ω-aminoundecanoic acid. Energy saving of 77% is achieved by employing mech. vapor recompression. The amination is complex as chem. and processing, involving aqueous solutions and solids. The economic anal. estimates capital costs and min. product prices for 20% ROI. The performance and contribution of each process is highlighted. The bottleneck in design is the amination plant, capital-intensive and handling large amounts of process water. This stage makes necessary high equipment and energy costs but delivers a high-value monomer that boost the profitability. The result is that at equal throughput the biochems. bring 2.5 times more revenues than biodiesel. By a synergy effect, high-value biochems. sustain the profitability of commodity biodiesel, which in turn offers a broader market and secures stable revenues for farmers.

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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Redox-responsive comparison of diselenide micelles with disulfide micelles》. Authors are Zhang, Longshuai; Liu, Yuancheng; Zhang, Kui; Chen, Yuanwei; Luo, Xianglin.The article about the compound:11-Bromoundecanoic acidcas:2834-05-1,SMILESS:O=C(O)CCCCCCCCCCBr).Application In Synthesis of 11-Bromoundecanoic acid. Through the article, more information about this compound (cas:2834-05-1) is conveyed.

Redox-responsive block copolymer micelles have been studied extensively as drug carriers. In this study, tri-block copolymers, methoxyl poly(ethylene glycol)-b-poly(ε-caprolactone)-SeSe-b-poly(ε-caprolactone)-b-methoxyl-poly(ethylene glycol) (mPEG-PCL-SeSe-PCL-mPEG) and methoxyl poly(ethyleneglyco)-b-poly(ε-caprolactone)-SS-b- poly(ε-caprolactone)-b-methoxyl-poly(ethylene glycol) (mPEG-PCL-SS-PCL-mPEG), were synthesized to investigate the redox sensitivity differences between diselenide and disulfide micelles. The changes of micelles in size and structure were investigated under conditions with glutathione (GSH) or H2O2. The results showed that the size and PDI of (mPEG-PCL-Se)2 micelles presented more significant variations under redox condition in comparison with (mPEG-PCL-S)2 micelles. The DOX released faster and more from diselenide micelles than disulfide micelles. The half maximal inhibitory concentration (IC50) of (mPEG-PCL-Se)2/DOX micelles was lower than that of (mPEG-PCL-S)2/DOX micelles against 4T1 and Hela cells. The amount of intracellular drug release from diselenide micelles was higher than from disulfide micelles in Hela cells with GSH 4.6 mM. Therefore, the (mPEG-PCL-Se)2 micelles similar to (mPEG-PCL-S)2 micelles are stimuli-responsive and may be more sensitive drug carriers.

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

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Wang, Yiqiong; Huang, Fei; Zhang, Songlin researched the compound: 11-Bromoundecanoic acid( cas:2834-05-1 ).HPLC of Formula: 2834-05-1.They published the article 《Intramolecular Cyclization of Brominated Oxime Ether Promoted with Ytterbium(0) to the Synthesis of Cyclic Imines》 about this compound( cas:2834-05-1 ) in European Journal of Organic Chemistry. Keywords: cyclic imine preparation intramol cyclization brominated oxime ether; Ytterbium catalyzed intramol cyclization brominated oxime ether. We’ll tell you more about this compound (cas:2834-05-1).

The first utility of ytterbium(0) as a mediating-metal in the intramol. cyclization of brominated oxime ether was reported in this paper. In contrast to the prior methods, the N-O bond was used as a receptor of nucleophilic reagent, rather than as a source of N-centered radicals. Cyclic imines were obtained in this one-pot reaction with a broad scope of substrates and feasible reaction conditions.

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

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, Journal of Molecular Liquids called Design and synthesis of a novel corrosion inhibitor embedded with quaternary ammonium, amide and amine motifs for protection of carbon steel in 1 M HCl, Author is Chauhan, Dheeraj Singh; Quraishi, Mumtaz A.; Jafar Mazumder, Mohammad A.; Ali, Shaikh A.; Aljeaban, Norah A.; Alharbi, Bader G., the main research direction is quaternary ammonium amide amine motif carbon steel hydrochloric acid.Formula: C11H21BrO2.

Me 11-bromoundecanoate [Br (CH2)10CO2Me] (1) on treatment with tripropylamine gave quaternary salt [Pr3 N+(CH2)10CO2Me]Br- (2) which on treatment with diethylenetriamine afforded [Pr3N+(CH2)10 CONH(CH2)2NH(CH2)2NH2] Br- (3) containing inhibitive motifs of ammonium, amide and amine motifs embedded in a single frame. The precursor salt 2 and its derivative 3 were successfully synthesized in excellent yields and characterized using different spectroscopic techniques. For the first time, a detailed study on the corrosion inhibition behavior of corrosion inhibitors 2 and 3 for mild steel in 1 M HCl was carried out using electrochem. measurements and comprehensive computational anal. Both the studied inhibitors showed excellent aqueous solubility The high inhibition efficiency of 91% and 93% at a concentration of 200 mg L-1 was obtained for corrosion inhibitors 2 and 3, resp. The adsorption of the corrosion inhibitors exhibited the Langmuir isotherm with a mixture of phys. and chem. modes of adsorption. The impedance studies showed a rise in the polarization resistance with increasing concentration of the inhibitors. Polarization measurements demonstrated that the inhibitors displayed a mixed-mode of inhibition with primarily cathodic nature. Surface anal. studies supported the inhibitor adsorption and a protective film formation on the carbon steel surface, which improved the surface smoothness of the steel surface. The DFT based quantum chem. calculations supported the exptl. obtained results and showed that the inhibitor 3 displays superior inhibition in comparison to the inhibitor 2. The Monte Carlo simulations revealed higher adsorption energy for the inhibitor 3 compared to 2.

The article 《Design and synthesis of a novel corrosion inhibitor embedded with quaternary ammonium, amide and amine motifs for protection of carbon steel in 1 M HCl》 also mentions many details about this compound(2834-05-1)Formula: C11H21BrO2, you can pay attention to it, because details determine success or failure

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 11-Bromoundecanoic acid( cas:2834-05-1 ) is researched.Formula: C11H21BrO2.Fontanesi, Claudio; Como, Enrico Da; Vanossi, Davide; Montecchi, Monica; Cannio, Maria; Mondal, Prakash Chandra; Giurlani, Walter; Innocenti, Massimo; Pasquali, Luca published the article 《Redox-Active Ferrocene grafted on H-Terminated Si(111): Electrochemical Characterization of the Charge Transport Mechanism and Dynamics》 about this compound( cas:2834-05-1 ) in Scientific Reports. Keywords: hydrogen terminated silicon ferrocene electrode charge transport mechanism. Let’s learn more about this compound (cas:2834-05-1).

Electroactive self-assembled monolayers (SAMs) bearing a ferrocene (Fc) redox couple were chem. assembled on H-terminated semiconducting degenerate-doped n-type Si(111) substrate. This allows to create a Si(111)|organic-spacer|Fc hybrid interface, where the ferrocene moiety is covalently immobilized on the silicon, via two alkyl mol. spacers of different length. Organic monolayer formation was probed by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) and XPS measurements, which were also used to estimate thickness and surface assembled monolayer (SAM) surface coverage. Atomic force microscopy (AFM) measurements allowed to ascertain surface morphol. and roughness. The single electron transfer process, between the ferrocene redox probe and the Si electrode surface, was probed by cyclic voltammetry (CV) measurements. CVs recorded at different scan rates, in the 10 to 500 mV s-1 range, allowed to determine peak-to-peak separation, half-wave potential, and charge-transfer rate constant (KET). The exptl. findings suggest that the electron transfer is a one electron quasi-reversible process. The present demonstration of surface engineering of functional redox-active organometallic mol. can be efficient in the field of mol. electronics, surface-base redox chem., opto-electronic applications.

Although many compounds look similar to this compound(2834-05-1)Formula: C11H21BrO2, numerous studies have shown that this compound(SMILES:O=C(O)CCCCCCCCCCBr), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

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, Materials Today Communications called A newly synthesized ionic liquid as an effective corrosion inhibitor for carbon steel in HCl medium: A combined experimental and computational studies, Author is Ozturk, Serkan; Gerengi, Husnu; Solomon, Moses M.; Gece, Gokhan; Yildirim, Ayhan; Yildiz, Mesut, the main research direction is tricationic surfactant ionic liquid steel corrosion inhibitor acid medium.Recommanded Product: 11-Bromoundecanoic acid.

Surfactants present exciting adsorption chem. due to their dual nature, i.e the present of the hydrophobic and hydrophilic parts in their structures. However, the inhibition performance of surfactants is influenced by their chem. structure as well as the nature of the electrolyte. In acidic media, high concentration of tri-cationic surfactants is required for effective surface protection. Herein, we report the synthesis of a novel tri-cationic surfactant containing three quaternized nitrogen atoms and its corrosion inhibitive effect for carbon steel in 1 M aqueous HCl medium. The mol. structure of the surfactant was elucidated by 1H NMR and 13C NMR spectroscopic techniques and its anti-corrosion activity was investigated by electrochem. impedance spectroscopy, potentiodynamic polarization and dynamic electrochem. impedance spectroscopy methods. The results obtained from the corrosion studies show that the synthesized surfactant is quite effective against the low carbon steel corrosion and at low inhibitor concentration The inhibition efficiency obtained at 5 mg/L concentration is above 90%, showing that the anti-corrosion effect of the synthesized surfactant on the metal surface is strong even at low inhibitor concentration Moreover, some physicochem. parameters namely, the critical micelle concentration, surface tension, micelle formation free energy, and emulsion stability have been calculated and used to explain the correlation with the corrosion inhibition mechanism. Addnl., to support the results from the electrochem. measurements, surface morphol. examination using energy dispersive X-ray spectroscopy (EDAX) and scanning electron microscope (SEM) methods have been performed. The EDAX and SEM results prove the adsorption of the tri-cationic surfactant mol. on the metal surface. The adsorption followed the Langmuir adsorption isotherm and calculated Kads (equilibrium constant of the adsorption process) value reflects strong interaction. More so, d. functional theory (DFT) results corroborate the exptl. results. The synthesized tri-cationic surfactant is a potential candidate for the formulation of acid corrosion inhibitor for acid cleaning applications.

Although many compounds look similar to this compound(2834-05-1)Recommanded Product: 11-Bromoundecanoic acid, numerous studies have shown that this compound(SMILES:O=C(O)CCCCCCCCCCBr), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

Quality Control of Basic copper carbonate. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Basic copper carbonate, is researched, Molecular CH2Cu2O5, CAS is 12069-69-1, about Catalytic Urea Synthesis from Ammonium Carbamate Using a Copper(II) Complex: A Combined Experimental and Theoretical Study. Author is Hanson, Danielle S.; Wang, Yigui; Zhou, Xinrui; Washburn, Erik; Ekmekci, Merve B.; Dennis, Donovan; Paripati, Amay; Xiao, Dequan; Zhou, Meng.

The synthesis of urea fertilizer is currently the largest CO2 conversion process by volume in the industry. In this process, ammonium carbamate is an intermediate en route to urea formation. We determined that the tetraammineaquacopper(II) sulfate complex, [Cu(NH3)4(OH2)]SO4, catalyzed the formation of urea from ammonium carbamate in an aqueous solution A urea yield of up to 18 ± 6% was obtained at 120°C after 15 h and in a high-pressure metal reactor. No significant urea formed without the catalyst. The urea product was characterized by Fourier transform IR (FT-IR), powder X-ray diffraction (PXRD), and quant. 1H{13C} NMR analyses. The [Cu(NH3)4(OH2)]SO4 catalyst was then recovered at the end of the reaction in a 29% recovery yield, as verified by FT-IR, PXRD, and quant. UV-vis spectroscopy. A precipitation method using CO2 was developed to recover and reuse 66 ± 3% of Cu(II). The catalysis mechanism was investigated by the d. functional theory at the B3LYP/6-31G** level with an SMD continuum solvent model. We determined that the [Cu(NH3)4]2+ complex is likely an effective catalyst structure. The study of the catalysis mechanism suggests that the coordinated carbamate with [Cu(NH3)4]2+ is likely the starting point of the catalyzed reaction, and carbamic acid can be involved as a transient intermediate that facilitates the removal of an OH group. Our work has paved the way for the rational design of catalysts for urea synthesis from the greenhouse gas CO2.

Although many compounds look similar to this compound(12069-69-1)Quality Control of Basic copper carbonate, numerous studies have shown that this compound(SMILES:O[Cu]OC(O[Cu]O)=O), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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