Author: tianli

Singh, Nagender published the artcileNovel Chitosan-Gelatin microcapsules containing rosemary essential oil for the preparation of bioactive and protective linen, HPLC of Formula: 124-76-5, the main research area is chitosan gelatin linen fabric microcapsule rosemary essential oil.

Biomols. present in natural materials have always remained a prime choice for the development of safe, protective, and wellness-related textile products. In this study, functional microcapsules were prepared using the chitosan-gelatin complex as a shell material and rosemary essential oil as a core material. The prepared microcapsules were utilized for the development of multifunctional linen fabric. The oil release mechanism of microcapsules was studied using the Korsmeyer-Peppas model. The obtained microcapsules and finished linen fabrics were characterized using SEM-EDX anal. and ATR-FTIR anal. The durability of functionalities against repeated launderings was also studied. The microcapsules with an encapsulation efficiency of more than 70% were used to impart durable mosquito-repellency (more than 90%) against Anopheles mosquitoes, antibacterial properties against E. coli (> 93%) and S. aureus (> 95%) bacteria, significant (> 91%) antioxidant activity and a pleasant aroma. The chem. constituents of rosemary oil were also found to be responsible for imparting multifunctional properties. The novel combination of biopolymers and essential oil was explored for the development of multifunctional textiles.

Industrial Crops and Products published new progress about Anopheles. 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, HPLC of Formula: 124-76-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yang, Jeh-Chang published the artcileOn the nature of shape-fixing in semicrystalline shape-memory networks, Formula: C17H28O8S4, the main research area is phenolthiazine reinforced polymer composite shape memory network mech property.

Crystallization of polymer strands within elastically strained cross-linked networks can lower tension, leading to stabilization of mech. deformed states. This process, referred to as shape-fixing, is sensitive to thermomech. path because both mech. strain and thermal undercooling affect crystallization kinetics. In the present study, shape-fixing of a well-defined poly(caprolactone) network is examined at fixed strains ranging from 25 to 100%. Isothermal crystallization kinetics were studied using wide angle X-ray scattering while simultaneously monitoring tension loss. Plots of tensile stress vs. degree of crystallization show that significant stress reduction occurs at only a few percent crystallinity (<0.05). The development of young's modulus under identical conditions was evaluated, and results are combined to estimate the shape-fixity at different crystallization conditions and times. This study contributes to understanding the interrelationship between crystallization, stress reduction, and material stiffening to support further development of semicrystalline shape-memory networks. Polymer Crystallization published new progress about Annealing. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lee, Hyun-Jung published the artcilePerformance improvement of slot-die-deposition based perovskite solar cells using diglycolic acid additives, COA of Formula: C4H6O5, the main research area is diglycolic acid slot die deposition perovskite solar cell.

In slot-die-coating process, novel approaches for better perovskite film formation were continuously required. Here, we studied additive processes for better slot-die-processed perovskite fabrication. As a novel additive, we introduced diglycolic acid (DA) material having a carboxyl group, well known as an effective functional group. With adding optimal amount of DA in the perovskite precursor solution, device efficiency and stability were all improved; DA-based perovskite device showed the best PCE of 14.63%. Moreover, the DA-based devices showed superior long-term stability guaranteeing 80% of initial efficiency during 95 days.

Materials Letters published new progress about Annealing. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2′-Oxydiacetic acid, and the molecular formula is C4H6O5, COA of Formula: C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ibanez, J. published the artcileDirect amination of 1-octanol with NH3 over Ag-Co/Al2O3: Promoting effect of the H2 pressure on the reaction rate, Product Details of C8H18O, the main research area is silver cobalt alumina ammonia octanol direct amination reaction rate.

The kinetics of the direct gas-phase amination reaction of 1-octanol with ammonia was studied over a Ag-Co/Al2O3 catalyst. An exhaustive exptl. dataset was acquired on a Flowrence unit using a full factorial exptl. design, covering the effect and interactions of the 1-octanol, ammonia and hydrogen partial pressures in the range 160-180 °C. An apparent zero order was obtained for both reactants (i.e. 1-octanol and NH3), addressing alc. dehydrogenation as the rate-determining step of the overall catalytic process. Most interestingly, a non-trivial pos. effect of the exogeneous H2 pressure was observed on the 1-octanol conversion, also favoring the formation of the secondary amine. To unveil the promoting role of H2 on the reaction rate, a comprehensive kinetic modeling study was carried out. Based on the observed exptl. trends, various kinetic models were proposed relying on an in situ catalytic deactivation-regeneration mechanism of the catalyst surface. Upon statistical discrimination, a robust kinetic model could be obtained, pointing out the adsorbed octylimine intermediate as the most plausible source of deactivation. The kinetic model afford an excellent description of the observed exptl. trends at both low and high 1-octanol conversion and provides a sound mechanistic explanation accounting for the unexpected role of H2 on alc. amination reactions.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Amination. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Niu, Feng published the artcileA multifaceted role of a mobile bismuth promoter in alcohol amination over cobalt catalysts, Application of n-Octanol, the main research area is alumina supported bismuth promoted cobalt catalyst alc amination.

Promotion with small amounts of different elements is an efficient strategy for the enhancement of the performance of many heterogeneous catalysts. Supported cobalt catalysts exhibit significant activity in the synthesis of primary amines via alc. amination with ammonia, which is an economically efficient and environmentally friendly process. Insufficient selectivity to primary amines, low activity and fast cobalt catalyst deactivation remain serious issues restricting the application of alc. amination in the industry. In this work, we have discovered the multifaceted role of the bismuth promoter, which is highly mobile under reaction conditions, in 1-octanol amination over supported cobalt catalysts. First, the overall reaction rate was enhanced more than twice on promotion with bismuth. Second, the selectivity to primary amines increased 6 times in the presence of Bi at high alc. conversion. Finally, the bismuth promotion resulted in extremely high stability of the cobalt catalyst. Characterization by XRD, temperature programmed reduction, STEM, CO chemisorption, BET, TGA and FTIR has showed that the enhancement of the catalytic performance on promotion with bismuth is due to better cobalt reducibility, easy removal of strongly adsorbed intermediates and products by the mobile promoter and suppression of amine coupling reactions resulting in secondary and tertiary amines.

Green Chemistry published new progress about Amination. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Fang, L. published the artcileHighly selective Ru/HBEA catalyst for the direct amination of fatty alcohols with ammonia, COA of Formula: C8H18O, the main research area is ruthenium HBEA catalyst amination fatty alc ammonia.

The present study describes the synthesis of primary amines from long-chain fatty alcs. and ammonia using supported ruthenium catalysts over different acid supports, including a variety of zeolites with different topologies and Si/Al ratios. The morphol., acidity and location of ruthenium in the catalysts was studied in detail by combining XRD, BET, HR-TEM, NH3-TPD, octylamine-TPD, H2-TPR, XPS, EXAFS / XANES, 27Al MAS NMR and TGA. In particular, Ru/HBEA (Si/Al = 25) with 5 wt% Ru afforded more than 90% conversion and 90% selectivity to 1-octylamine in the liquid-phase amination reaction of 1-octanol with ammonia at 180°C in a batch reactor. The high selectivity of Ru/HBEA (Si/Al = 25) can be explained by the presence of Bronsted / Lewis acid centers with medium strength in the proximity of ruthenium nanoparticles. The catalyst was further tested in a pre-pilot continuous stirred-tank reactor (2 L) with flash separation of 1-octylamine. In this configuration, a steady 92% selectivity of octylamine was obtained at 87% 1-octanol conversion during 120 h on steam. The catalyst kept its integrity during the reaction.

Applied Catalysis, B: Environmental published new progress about Amination. 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

Kim, Byeong Wook published the artcileStructure-activity relationship (SAR) studies on the mutagenic properties of 2,7-diaminofluorene and 2,7-diaminocarbazole derivatives, Product Details of C11H16O2, the main research area is structure activity relationship mutagenic properties diaminofluorene diaminocarbazole; Ames test; Aromatic amines; HCV NS5A inhibitor.

We discovered that 2,7-diaminofluorene or 2,7-diaminocarbazole moiety can be employed as a core structure of highly effective NS5A inhibitors that are connected through amide bonds to proline-valine-carbamate motifs. Amide bonds can be easily cleaved via various metabolic pathways upon administration into the body, and metabolites containing 2,7-diaminofluorene and 2,7-diaminocarbazole core structures have been known to be strong mutagens. To avoid the mutagenesis issue of these core structures, we examined various functional groups at the C9 or N9 position of 2,7-diaminofluorene or 2,7-diaminocarbazole, resp., through the Ames test in TA98 and TA100 mutants of Salmonella typhimurium LT-2. We discovered that, through proper alkyl substitution at the C9 or N9 position, 2,7-diaminofluorene and 2,7-diaminocarbazole moieties can be successfully employed in drug discovery without necessarily causing mutagenicity problems.

Bioorganic & Medicinal Chemistry Letters published new progress about Ames test. 6214-45-5 belongs to class alcohols-buliding-blocks, name is (4-Butoxyphenyl)methanol, and the molecular formula is C11H16O2, Product Details of C11H16O2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chinuki, Yuko published the artcileAlpha-Gal-containing biologics and anaphylaxis, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is review; Anaphylaxis; Cetuximab; Galactose-α-1, 3-galactose; Red meat allergy; Tick bites.

Cetuximab, the IgG1 subclass chimeric mouse-human monoclonal antibody biol. that targets the epidermal growth factor receptor (EGFR), is used worldwide for the treatment of EGFR-pos. unresectable progressive/recurrent colorectal cancer and head and neck cancer. Research has shown that the principal cause of cetuximab-induced anaphylaxis is anti oligosaccharide IgE antibodies specific for galactose-α-1,3-galactose (α-Gal) oligosaccharide present on the mouse-derived Fab portion of the cetuximab heavy chain. Furthermore, it has been revealed that patients who are allergic to cetuximab also develop an allergic reaction to mammalian meat containing the same α-Gal oligosaccharide owing to cross-reactivity, and the presumed cause of sensitization is tick bites: Amblyomma in the United States. Investigations of cetuximab-related anaphylaxis have revealed three novel findings that improve our understanding of immediate-type allergy: 1. oligosaccharide can serve as the main IgE epitope of anaphylaxis; 2. because of the oligosaccharide epitope, a wide range of cross-reactivity with mammalian meats containing α-Gal similar to cetuximab occurs; and 3. tick bites are a crucial factor of sensitization to the oligosaccharide.

Allergology International published new progress about Amblyomma. 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, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hero, Eirik H. published the artcileDetermination of Breakage Parameters in Turbulent Fluid-Fluid Breakage, COA of Formula: C8H18O, the main research area is breakage particle turbulent fluid size distribution oil droplet.

Numerous sets of single-particle breakage experiments are required to provide a sufficient database for improving the modeling of fluid particle breakage mechanisms. This work focuses on the interpretation of the phys. breakage events captured on video. To extract the necessary information required for modeling the mechanisms of the fluid particle breakage events in turbulent flows, a well-defined image anal. procedure is necessary. Two breakage event definitions are considered, namely, initial breakup and cascade breakup. The reported breakage time, the number of daughter particles created, and the daughter size distribution are significantly affected by the definition used. For each breakage event definition, an image anal. procedure is presented.

Chemical Engineering & Technology published new progress about Algorithm. 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

Qian, Jie published the artcilePredictive and explanatory themes of NOAEL through a systematic comparison of different machine learning methods and descriptors, Safety of n-Octanol, the main research area is machine learning NOAEL food additive cosmetic; Cheminformatics; Food additives; Machine learning; NOAEL; Sub-chronic; Toxicity.

No observed adverse effect level (NOAEL) is an identified dose level which used as a point of departure to infer a safe exposure limit of chems., especially in food additives and cosmetics. Recently, in silico approaches have been employed as effective alternatives to determine the toxicity endpoints of chems. instead of animal experiments Several acceptable models have been reported, yet assessing the risk of repeated-dose toxicity remains inadequate. This study established robust machine learning predictive models for NOAEL at different exposure durations by constructing high-quality datasets and comparing different kinds of mol. representations and algorithms. The features of mol. structures affecting NOAEL were explored using advanced cheminformatics methods, and predictive models also communicated the NOAEL between different species and exposure durations. In addition, a NOAEL prediction tool for chem. risk assessment is provided. We hope this study will help researchers easily screen and evaluate the subacute and sub-chronic toxicity of disparate compounds in the development of food additives in the future.

Food and Chemical Toxicology published new progress about Algorithm. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Safety of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts