Category: 142-90-5

Le, Xiaoxia published the artcileFluorescent Organohydrogel with Thermal-Induced Color Change for Anti-counterfeiting, Recommanded Product: Dodecyl 2-methylacrylate, the main research area is acrylic fluorescent hydrogel color change anticounterfeiting.

Smart fluorescent patterns enable dynamic color variation under external stimuli, showing a much higher security level in the field of anti-counterfeiting. However, there is still lacking of a simple and convenient way to achieve dynamic fluorescence changes. Herein, a fluorescent organohydrogel made up of a poly(N,N-dimethylacrylamide-co-isopropylacrylamide) (p(DMA-NIPAM)) hydrogel network and a poly(lauryl methacrylate) (PLMA) organogel network was fabricated via a two-step interpenetrating technique. The former network bears naphthalimide moieties (DEAN, green fluorescent monomer) and the later contains 6-acrylamidopicolinic acid (6APA, fluorescent ligand), leading to emitting green fluorescence. When Eu3+ was introduced and coordinated with 6APA, the organohydrogel displays red fluorescence, which can further emit yellow after applying thermal stimulus. Furthermore, by adjusting the proportion of comonomers, various organohydrogels can be obtained, which can be programmed and act as an effective platform for the encryption and decryption of secret information.

Chinese Journal of Chemistry published new progress about Anti-counterfeiting. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Recommanded Product: Dodecyl 2-methylacrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yamaga, Hiroaki published the artcileAmino acid derivative reactivity assay-organic solvent reaction system: A novel alternative test for skin sensitization capable of assessing highly hydrophobic substances, Related Products of esters-buliding-blocks, the main research area is amino acid reactivity assay organic solvent skin sensitization; alternative to animal testing; amino acid derivative reactivity assay-organic solvent (ADRA-OS) reaction system; in chemico; octanol/water partition coefficient (logKow); skin sensitization.

The amino acid derivative reactivity assay (ADRA) is an in chemico alternative to animal testing that focuses on protein binding. The ADRA is a skin sensitization test that solves problems associated with the direct peptide reactivity assay. However, when utilizing the ADRA to evaluate highly hydrophobic substances with octanol/water partition coefficients (logKow) of >6, the test substances may not dissolve in the reaction solution, which can prevent the accurate assessment of skin sensitization. Therefore, we developed the ADRA-organic solvent (ADRA-OS) reaction system, which is a novel skin sensitization test that enables the assessment of highly hydrophobic substances with a logKow of >6. We discovered that the organic solvent ratio, the triethylamine concentration, and the EDTA disodium salt dihydrate concentration participate in reactions with the nucleophile N-(2-(1-naphthyl)acetyl)-L-cysteine (NAC) and sensitizers that are used in ADRA and in stabilizing NAC. Thus, we determined the optimal reaction composition of the ADRA-OS according to L9 (33) orthogonal array experiments Using this test, we assessed 14 types of highly hydrophobic substances. When we compared the results with ADRA, we found that ADRA-OS reaction system has high solubility for highly hydrophobic substances and that it has a high predictive capacity (sensitivity: 63%, specificity: 100%, accuracy: 79%). The implication of the results is that the novel ADRA-OS reaction system should provide a useful method for assessing the skin sensitization of highly hydrophobic substances with a logKow of >6.

Journal of Applied Toxicology published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Penrhyn-Lowe, Oliver B. published the artcileImpact of multi-vinyl taxogen dimensions on high molecular weight soluble polymer synthesis using transfer-dominated branching radical telomerisation, Application of Dodecyl 2-methylacrylate, the main research area is vinyl taxogen transfer dominated branching radical telomerisation.

Complex macromol. architectures offer innovation opportunities through the formation of new polymers with novel phys. and chem. behavior. Optimally existing com. feedstocks are used as the introduction of new small mol. chemistries may extend regulatory requirements at high expense. In a highly orthogonal synthesis strategy, we recently utilized telomerisation approaches, conventionally targeting small mol. dimerization, to generate high mol. weight branched polymers. Transfer-dominated branching radical telomerisation (TBRT) employs radical reactions, but yields branched polymers with extended backbones resembling those conventionally formed via step-growth polymerization Here we examine the impact of taxogen dimensions on the outcomes of TBRT using multi-vinyl taxogens ethylene glycol dimethacrylate (EGDMA), 1,6-hexanediol dimethacrylate (HDMA) and 1,12-dodecanediol dimethacrylate (LDMA). Marked differences in gelation behaviors were correlated to the dimensions of the taxogen, notably due to the shifting balance of intermol. and intramol. branching processes occurring during TBRT.

Polymer Chemistry published new progress about Gelation. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application of Dodecyl 2-methylacrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Flynn, Sean published the artcileExpanding the monomer scope of linear and branched vinyl polymerisations via copper-catalysed reversible-deactivation radical polymerisation of hydrophobic methacrylates using anhydrous alcohol solvents, Safety of Dodecyl 2-methylacrylate, the main research area is linear branched vinyl hydrophobic methacrylate alc solvent radical polymerization.

Cu-Catalyzed reversible-deactivation radical polymerization of hydrophobic methacrylate monomers in anhydrous alcs. has been expanded to explore the scope of this unusual choice of solvent. A range of linear methacrylic homopolymers with well-targeted mol. weight and low dispersity (D = 1.12-1.53) have been generated in anhydrous methanol and isopropanol with relative ease. These solvents are normally considered antisolvents and employed to precipitate such polymers; therefore, our studies have assessed the polymerization reaction mixture homogeneity and extent of reaction control. Statistical copolymerizations with the bi-functional monomer, ethylene glycol di-methacrylate (EGDMA), has led to branched statistical copolymers with weight average mol. weights up to Mw = 1.76 × 106 g mol-1; subsequent triple-detection size exclusion chromatog. studies have provided insight into the impact of monomer structure on the extent of branching within the final isolated polymers. The ability to control branched copolymer mol. weights under these conditions through variation of EGDMA concentrations was seen to be highly dependent on methacrylate monomer chem. A number of factors which are likely to effect branching reactions during the polymerization of hydrophobic methacrylates in anhydrous alcs. are discussed.

Polymer Chemistry published new progress about Homogeneity. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Safety of Dodecyl 2-methylacrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Peng, Hui published the artcileCotton Fabric-Supported Cationic Acrylate Polymer as an Efficient and Recyclable Catalyst for Williamson Ether Synthesis Reaction in Solid-Liquid-Liquid Phase Transfer Catalysis System, Computed Properties of 142-90-5, the main research area is cotton fabric supported cationic acrylate polymer recyclable catalyst Williamson.

Cotton-based catalytic fabric (CCF) was prepared by the simple padding-drying method with the copolymer of five functional monomers as the modifier and was applied in the solid-liquid-liquid phase-transfer catalysis (SLL-PTC) system. Effects of the structure of the function monomer, the content of the cation, and the loading amount on the catalytic activity of CCF were studied. The lipophilicity, disperse extent of cationic center, and the accessory to the ion for CCF were influenced by the structure and content of the function monomer. The organic phase was adsorbed on the surface of the catalytic fabric, and the novel catalytic cycle in the PTC system was initiated. The anion in the aqueous phase diffuses through the interfacial region to the site for ion exchange. Bond-forming reaction was initiated in the interfacial region between the organic phase on the fabric and the aqueous phase. The conversion rate for Williamson ether synthesis reaction reached 92%, and CCF could be reused five times in this SLL-PTC system.

ACS Omega published new progress about Cotton textiles. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Computed Properties of 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Cheng, Zenghui published the artcileSustainable elastomers derived from cellulose, rosin and fatty acid by a combination of “”graft from”” RAFT and isocyanate chemistry, Recommanded Product: Dodecyl 2-methylacrylate, the main research area is cellulose rosin fatty acid elastomer RAFT isocyanate chem; Biobased elastomers; Ethyl cellulose; RAFT.

Utilization of natural sustainable feedstock to fabricate polymers has attracted remarkable attention. In this work, we reported a strategy to prepare a series of grafted copolymers from rosin, fatty acids and Et cellulose. The process involved the preparation of EC-based macro-RAFT agent through a simple esterification reaction, followed by a “”grafting from”” reversible addition-fragmentation chain transfer polymerization (RAFT) of DAGMA (derived from rosin) and LMA (derived from fatty acid) to achieve a class of EC-g-P(DAGMA-co-LMA) graft copolymers with a tunable Tg tuned by the DAGMA/LMA molar ratio. Then, hexamethylene diisocyanate (HDI) was used to crosslink these graft copolymers. The mech. and dynamic thermo-mech. properties of tests showed that elastic recovery values of copolymers were enhanced to 90%, as compared to the un-crosslinked samples. Addnl., all these polymers showed an excellent UV absorption performance. This study provides a facile way to fabricate biobased elastomeric materials with improved mech. properties.

International Journal of Biological Macromolecules published new progress about Crosslinking. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Recommanded Product: Dodecyl 2-methylacrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Patias, Georgios published the artcileControlled synthesis of methacrylate and acrylate diblock copolymers via end-capping using CCTP and FRP, Related Products of esters-buliding-blocks, the main research area is methacrylate acrylate diblock copolymer catalytic chain transfer polymerization.

Scalable methods of producing functional materials is of importance. Herein, we report the use of free radical copolymerization of ω-unsaturated methacrylic macromonomers, as derived from catalytic chain transfer polymerization (CCTP), with acrylic monomers in solution leading to block copolymers by varying the nature of the macromonomer. We demonstrate the effect that varying the mol. weight and ester side chain length of macromonomer from CCTP, has on the polymerization leading to either graft or diblock copolymers. DOSY NMR, MALDI-ToF/ToF MS has allowed for the exploration of the extent to which varying the concentration of macromonomer has on the products formed. Importantly, during the successful synthesis of acrylic and methacrylic diblock copolymers with broad dispersities of each block, full consumption of the macromonomers was observed

Polymer Chemistry published new progress about Polymers, graft Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Dirin, Dmitry N. published the artcileMicrocarrier-Assisted Inorganic Shelling of Lead Halide Perovskite Nanocrystals, Application In Synthesis of 142-90-5, the main research area is microcarrier assisted shelling lead halide perovskite nanocrystal; core/shell; lead halide perovskite; luminescence; nanocrystals; stability.

The conventional strategy of synthetic colloidal chem. for bright and stable quantum dots has been the production of epitaxially matched core/shell heterostructures to mitigate the presence of deep trap states. This mindset has been shown to be incompatible with lead halide perovskite nanocrystals (LHP NCs) due to their dynamic surface and low m.p. Nevertheless, enhancements to their chem. stability are still in great demand for the deployment of LHP NCs in light-emitting devices. Rather than contend with their attributes, we propose a method in which we can utilize their dynamic, ionic lattice and uniquely defect-tolerant band structure to prepare non-epitaxial salt-shelled heterostructures that are able to stabilize these materials against their environment, while maintaining their excellent optical properties and increasing scattering to improve out-coupling efficiency. To do so, anchored LHP NCs are first synthesized through the heterogeneous nucleation of LHPs onto the surface of microcrystalline carriers, such as alkali halides. This first step stabilizes the LHP NCs against further merging, and this allows them to be coated with an addnl. inorganic shell through the surface-mediated reaction of amphiphilic Na and Br precursors in apolar media. These inorganically shelled NC@carrier composites offer significantly improved chem. stability toward polar organic solvents, such as γ-butyrolactone, acetonitrile, N-methylpyrrolidone, and trimethylamine, demonstrate high thermal stability with photoluminescence intensity reversibly dropping by no more than 40% at temperatures up to 120 °C, and improve compatibility with various UV-curable resins. This mindset for LHP NCs creates opportunities for their successful integration into next-generation light-emitting devices.

ACS Nano published new progress about Band structure. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application In Synthesis of 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Oh, Xin Yi published the artcileSynthesis of degradable and chemically recyclable polymers using 4,4-disubstituted five-membered cyclic ketene hemiacetal ester (CKHE) monomers, HPLC of Formula: 142-90-5, the main research area is cyclic ketene hemiacetal ester monomer degradable polymer synthesis.

Novel degradable and chem. recyclable polymers were synthesized using five-membered cyclic ketene hemiacetal ester (CKHE) monomers. The studied monomers were 4,4-dimethyl-2-methylene-1,3-dioxolan-5-one (DMDL) and 5-methyl-2-methylene-5-phenyl-1,3-dioxolan-4-one (PhDL). The two monomers were synthesized in high yields (80-90%), which is an attractive feature. DMDL afforded its homopolymer with a relatively high mol. weight (Mn >100 000, where Mn is the number-average mol. weight). DMDL and PhDL were copolymerized with various families of vinyl monomers, i.e., methacrylates, acrylates, styrene, acrylonitrile, vinyl pyrrolidinone, and acrylamide, and various functional methacrylates and acrylate. Such a wide scope of the accessible polymers is highly useful for material design. The obtained homopolymers and random copolymers of DMDL degraded in basic conditions (in the presence of a hydroxide or an amine) at relatively mild temperatures (room temperature to 65°C). The degradation of the DMDL homopolymer generated 2-hydroxyisobutyric acid (HIBA). The generated HIBA was recovered and used as an ingredient to re-synthesize DMDL monomer, and this monomer was further used to re-synthesize the DMDL polymer, demonstrating the chem. recycling of the DMDL polymer. Such degradability and chem. recyclability of the DMDL polymer may contribute to the circular materials economy.

Chemical Science published new progress about Atom transfer radical polymerization. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, HPLC of Formula: 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lv, Xiaobo published the artcileSynthesis, Characterization, and Mechanism of Copolymer Viscosity Reducer for Heavy Oil, Category: esters-buliding-blocks, the main research area is synthesis characterization mechanism copolymer viscosity reducer heavy petroleum.

A functional copolymer viscosity reducer based on mol. dynamics simulations was synthesized using monomers of mixed ester, 4-vinylpyridine, and styrene. The possible structure and number of hydrogen bonds within the complex structure of heavy oil were simulated and analyzed after the copolymer was added. Results showed that the number of hydrogen bonds in asphaltene in the simulation structure decreased from 36 to 28 per unit volume with the addition of the copolymer. The original plane overlap structure of asphaltene was damaged as soon as interactions occurred between the asphaltene and copolymer mol. The potential energy of the system was higher with the addition of the copolymer, while the non-bond energy difference of the two systems was not obvious. The stereohindrance effect of the copolymer viscosity reducer mols. either broke or improved the interlocking structures of the asphaltene, helping to decrease the viscosity of the heavy oil.

Energy & Fuels published new progress about Heavy petroleum Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics