Category: 111-83-1

Cruickshank, Ewan published the artcileChalcogen bonding and liquid crystallinity: Understanding the anomalous behaviour of the 4′-(alkylthio)[1,1′-biphenyl]-4-carbonitriles (nSCB), Synthetic Route of 111-83-1, the publication is Journal of Molecular Liquids (2022), 117094, database is CAplus.

The synthesis and characterization of the first eleven members of the 4′-(alkylthio)[1,1′-biphenyl]-4-carbonitriles, I [n = 1, 2, 3, etc.] was reported. All eleven members I showed monotropic liquid crystal behavior. The first six members were exclusively nematogenic, the seventh member showed nematic and smectic A phases and the higher homologues only smectic A behavior. A comparison of their transitional behavior with that of the corresponding alkyl and alkyloxy-cyanobiphenyls revealed a new pattern of behavior. Specifically, the nematic-isotropic transition temperatures showed a large decrease on passing from the methylthio to ethylthio homologues. This unexpected behavior was interpreted in terms of chalcogen bonding.

Journal of Molecular Liquids published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Synthetic Route of 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Katariya, Kanubhai D. published the artcileCoumarin derivatives containing Schiff base and ester mesogenic core: Synthesis, mesomorphic behaviour and DFT calculations, Category: bromides-buliding-blocks, the publication is Journal of Molecular Structure (2022), 133043, database is CAplus.

New coumarin esters, (E)-4-[[[7-(octyloxy)-2-oxo-2H-chromen-3-yl]imino]methyl]phenyl-4-alkyloxybenzoates, containing a Schiff base linkage in which an octyloxy chain is at one end and different long terminal alkoxy chains (C2-C18) are at the other end, have been synthesized and studied for their mesomorphic behavior. The investigation of phase and mesophase transitions was carried out using differential scanning calorimetry and a Polarized Optical Microscope. The mesomorphic investigation revealed that all new derivatives exhibited an enantiotropic nematic phase and, except for two compounds, I [R = C_nH_2n+1, n = 2, 3], all the members also displayed enantiotropic smectic C phase in addition to enantiotropic nematic phase. The new mesogens mesomorphic behavior of all synthesized compounds were thoroughly studied and discussed, as well as compared with structurally comparable substances. Finally, the DFT theor. calculations were studied and compared with the exptl. to explain the relationship between the structural parameters and the mesomorphic behavior.

Journal of Molecular Structure published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Category: bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Deyab, M. A. published the artcileTheoretical and experimental investigation of four ionic liquids for their ability to prevent carbon steel corrosion in 1 M HCl, Recommanded Product: 1-Bromooctane, the publication is Journal of Molecular Liquids (2022), 118414, database is CAplus.

The inhibitory mechanism of four ionic liquids (ILs) generated from imidazolium is reported in this study. The goal of the research was to see how the cation structure of ILs affected the corrosion inhibition of carbon steel in 1 M HCl. The chem. structure of ILs was verified by elements anal., Fourier-transform-IR (FTIR), thermo gravimetric (TGA), NMR (¹HNMR, D₂O, ¹³C NMR) and hetero-nuclear single-quantum correlation (HSQC). The inhibitory efficiency was measured using mass loss and electrochem. tests and varied from 62.5% to 97.2%. The Langmuir model accurately defined their adsorption on a steel substrate. Adsorption of novel ILs on steel substrates is a mixed physisorption and chemisorption method. To ensure the mechanism of adsorption of current ionic liquids, FTIR and UV spectra were employed.

Journal of Molecular Liquids published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Recommanded Product: 1-Bromooctane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Katariya, Kanubhai D. published the artcileCoumarin Schiff base-esters liquid crystals with symmetrical and unsymmetrical alkoxy chains: synthesis, mesomorphic properties and DFT approach, Related Products of bromides-buliding-blocks, the publication is Journal of Molecular Liquids (2022), 119073, database is CAplus.

Herein, two series of coumarin Schiff base-esters liquid crystals I (R¹ = R² = Et, n-Pr, n-octadecyl, etc.) and I (R¹ = Et, n-Pr, n-octadecyl, etc.; R² = n-dodecyl) were prepared Both series were studied for their mesomorphic behavior using differential scanning calorimetry (DSC) for the phase transitions and polarized optical microscopy (POM) to identify the type of mesophase. On varying the alkyl chain length at the both end of mols. systematically in the series I (R¹ = R²), compounds of chain lengths 2-7 exhibited an enantiotropic nematic (N) phase whereas I (R¹ = R² = n-octyl) exhibited enantiotropic smectic C (SmC) phase in addition to enantiotropic nematic phase. Compounds of the sym. series I (R¹ = R² = n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl) showed enantiotropic SmC phase. In the unsym. series, enantiotropic nematic mesophase was observed for compounds I (R¹ = from Et to n-tetradecyl; R² = n-dodecyl), while enantiotropic SmC mesophase was observed for compounds I (R¹ = from n-hexyl to n-octadecyl; R² = n-dodecyl). The DFT theor. calculations was conducted for both series to understand the mesomorphic behavior of the investigated compounds Moreover, they were compared with similar reported compounds to explain the relationship between the structural parameters and the mesomorphic behavior.

Journal of Molecular Liquids published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Sabbaghan, Maryam published the artcileThe effect of aromatic and non-aromatic ionic liquids on the optical nonlinearity responses of porphyrins, Synthetic Route of 111-83-1, the publication is Journal of Molecular Liquids (2022), 118398, database is CAplus.

The effects of adding aromatic and nonaromatic ionic liquids (ILs) on third-order nonlinear optical (NLO) responses of 5,10,15,20-Tetrakis(4-methoxycarbonylphenyl) porphyrin (S1) and [5,10,15,20-Tetrakis(4-methoxycarbonylphenyl)-porphyrin]-Co (II) (S2) at 532 nm were investigated using the Z-scan technique. ILs show negligible nonlinear response in compare with porphyrins. A significant increase in NLO response with adding DABCO-based IL to S1 was observed which approx. equal to Cobalt(II) ion substitution at the core of porphyrin structure. The obtained value of nonlinear absorption coefficient β (cm/W) and the nonlinear refractive index n₂ (cm²/W), are of the order of 10^-4 and 10^-8, resp. The pos. synergetic effects were interpreted for enhanced nonlinear optical response by adding imidazolium-based IL and Cobalt(II) ion substitution at the core of porphyrin structure. Using ILs as additive led to excellent nonlinear properties which implies their promising applications in the optical devices.

Journal of Molecular Liquids published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Synthetic Route of 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Wenny, Malia B. published the artcileUnderstanding Relationships between Free Volume and Oxygen Absorption in Ionic Liquids, HPLC of Formula: 111-83-1, the publication is Journal of Physical Chemistry B (2022), 126(6), 1268-1274, database is CAplus and MEDLINE.

Understanding the factors that govern gas absorption in ionic liquids is critical to the development of high-capacity solvents for catalysis, electrochem., and gas separations Here, we report exptl. probes of liquid structure that provide insights into how free volume impacts the O₂ absorption properties of ionic liquids Specifically, we establish that isothermal compressibility-measured rapidly and accurately through small-angle X-ray scattering-reports on the size distribution of transient voids within a representative series of ionic liquids and is correlated with O₂ absorption capacity. Addnl., O₂ absorption capacities are correlated with thermal expansion coefficients, reflecting the beneficial effect of weak intermol. interactions in ionic liquids on free volume and gas absorption capacity. Mol. dynamics simulations show that the void size distribution-in particular, the probability of forming larger voids within an ionic liquid-has a greater impact on O₂ absorption than the total free volume These results establish relationships between the ionic liquid structure and gas absorption properties that offer design strategies for ionic liquids with high gas solubilities.

Journal of Physical Chemistry B published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C25H47NO8, HPLC of Formula: 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Abdelhafiz, Fatma M. published the artcileDesigning of quaternized hyperbranched polyamidoamines dendrimers: Surface activity, pharmaceutical efficacy, and safety approach, Recommanded Product: 1-Bromooctane, the publication is Journal of Drug Delivery Science and Technology (2022), 102929, database is CAplus.

The low solubility of the drug considers a major challenge for pharmaceutical formulation of both oral and parenteral products. In this work various generations of cationic hyperbranched polyamidoamine (PAMAM) quaternary ammonium salt dendrimers terminated with amine end groups were synthesized. The pharmaceutical application of these quaternized cationic surfactants ended with amine end groups and those ended with ester end groups which prepared in an earlier study were investigated. These dendrimers were compared as solubilizing agents for coenzyme Q10 (poorly soluble drug) and the dendrimers that showed high solubilizing potential (G_2.5 C₈, G_2.5 C₁₂) were selected to be evaluated as a dendrimer in dissolution study for coenzyme Q10 or Ledipasvir drug. In our investigation a comparison between four dissolution media with different surfactants namely, G_2.5 C₈, G_2.5 C₁₂, CTAB and Labrasol used for the dissolution test of Q10 was carried out. The results revealed that % Q10 released after 4 h was 86.7, 70.5, 43 and 10.5% for these dissolution media, resp. These results indicated the priority of the synthesized cationic surfactants than the known com. cationic surfactant (CTAB) or than Labrasol as recommended surfactant in previous lectures. Therefore, the profiles of the ledipasvir dissolution in the three-dissolution media G_2.5 C₈, G_2.5 C₁₂ and FDA surfactant (1.5% tween 80 and 0.0075 mg/mL Butylated Hydroxytoluene (BHT)) are similar. The obtained results emphasized that the new surfactants can be used as alternative to FDA surfactant in the dissolution media of Ledipasvir. Eventually, the toxicity study was performed for two selected compounds from the prepared dendrimers, and these compounds were proved to be safe.

Journal of Drug Delivery Science and Technology published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Recommanded Product: 1-Bromooctane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Hernandez-Bravo, Raiza published the artcileExperimental and theoretical study on the effectiveness of ionic liquids as corrosion inhibitors, COA of Formula: C8H17Br, the publication is Computational & Theoretical Chemistry (2022), 113640, database is CAplus.

An exptl. and computational study, using a D. Functional Theory approach, was made about the anticorrosive effect of ionic liquids on hematite surfaces. Based on the hypothesis that adsorption is an initial step in the kinetics of corrosion, followed by electron transfer processes, adsorption energy calculations and corrosion rates are determined to investigate the effect as corrosion inhibitor of ionic liquids mols. Several, potential descriptors of the inhibitor performance, conceptualized as an electrochem. process, based on the frontier orbital theory were used to characterize the interactions that might inhibit the corrosion, including the energies of the highest occupied (E_LUMO) and lowest unoccupied (E_HOMO) MOs, the energy gap between orbitals, crossed energies differences between HOMO and LUMO of the intervening chem. species and the surface, electronegativity (χ), hardness (η), and number of transferred electrons (ΔN). The main conclusion is that although the adsorption energy is a key parameter in establishing a correlation between calculated parameters and the exptl. characterization of the ILs, the remaining chem. predictors also play an important role on the descriptions of activity corrosion, especially the electronegativity difference between surface and ILs, and the hardness of the IL.

Computational & Theoretical Chemistry published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, COA of Formula: C8H17Br.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Noorani, Narmin published the artcileCarbon dioxide adsorption onto modified polyvinyl chloride with ionic liquid, Category: bromides-buliding-blocks, the publication is Journal of Polymer Engineering (2022), 42(6), 498-506, database is CAplus.

To modify polyvinylchloride membranes for carbon dioxide gas separation, six polyvinyl chloride-g-polyionic liquid ionomers such as polyvinylchloride-g-poly1-vinyl-3-hexylimidazolium bromide (PVC-g-P[VHIm][Br]), polyvinylchloride-g-poly1-vinyl-3-hexylimidazolium thiocyanate (PVC-g-P[VHIm][SCN]), polyvinylchloride-g-poly1-vinyl-3-hexylimidazolium tetrafluoroborate (PVC-g-P[VHIm][BF₄]), polyvinylchloride-g-poly1-vinyl-3-octylimidazolium bromide (PVC-g-P[VOIm][Br]), polyvinylchloride-g-poly1-vinyl-3-octylimidazolium thiocyanate (PVC-g-P[VOIm][SCN]) and polyvinylchloride-g-poly1-vinyl-3-octylimidazolium tetrafluoroborate (PVC-g-P[VOIm][BF₄]) were synthesized. The polyvinyl chloride-g-polyionic liquid ionomers were characterized using elemental analyzer (CHN) and Fourier transform IR spectroscopy (FTIR) techniques. CO₂ adsorption onto these ionomers was measured by quartz crystal microbalance (QCM) and the exptl. data were correlated by the sorption model. The parameters obtained imply that CO₂ adsorption has an exothermic and physisorption nature. Also, the investigations point to that the PVC-g-P[VHIm][SCN] has better performance for CO₂ separation

Journal of Polymer Engineering published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Category: bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Sommers, Kyle J. published the artcileQuaternary Phosphonium Compounds: An Examination of Non-Nitrogenous Cationic Amphiphiles That Evade Disinfectant Resistance, Category: bromides-buliding-blocks, the publication is ACS Infectious Diseases (2022), 8(2), 387-397, database is CAplus and MEDLINE.

Quaternary ammonium compounds (QACs) serve as mainstays in the formulation of disinfectants and antiseptics. However, an over-reliance and misuse of our limited QAC arsenal has driven the development and spread of resistance to these compounds, as well as co-resistance to common antibiotics. Extensive use of these compounds throughout the COVID-19 pandemic thus raises concern for the accelerated proliferation of antimicrobial resistance and demands for next-generation antimicrobials with divergent architectures that may evade resistance. To this end, we endeavored to expand beyond canonical ammonium scaffolds and examine quaternary phosphonium compounds (QPCs). Accordingly, a synthetic and biol. investigation into a library of novel QPCs unveiled biscationic QPCs to be effective antimicrobial scaffolds with improved broad-spectrum activities compared to com. QACs. Notably, a subset of these compounds was found to be less effective against a known QAC-resistant strain of MRSA. Bioinformatic anal. revealed the unique presence of a family of small multiresistant transporter proteins, hypothesized to enable efflux-mediated resistance to QACs and QPCs. Further investigation of this resistance mechanism through efflux-pump inhibition and membrane depolarization assays illustrated the superior ability of P6P-10,10 to perturb the cell membrane and exert the observed broad-spectrum potency compared to its com. counterparts. Collectively, this work highlights the promise of biscationic phosphonium compounds as next-generation disinfectant mols. with potent bioactivities, thereby laying the foundation for future studies into the synthesis and biol. investigation of this nascent antimicrobial class.

ACS Infectious Diseases published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C7H7ClN2S, Category: bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary