Category: 1592-20-7

Dashan, Irem; Balta, Demet Karaca; Temel, Binnur Aydogan; Temel, Gokhan published the artcile< Preparation of single chain nanoparticles via photoinduced radical coupling process>, Formula: C9H9Cl, the main research area is chain nanoparticle photoinduced radical coupling.

This contribution introduces a straightforward method for preparing well-defined polymeric nanoparticles using radical coupling process of ketyl moieties resulted from triplet excitation of pendant benzophenone groups. In the first step, poly(styrene-co-chloromethylstyrene) is synthesized by thermally initiated controlled radical copolymerization technique and subsequently, pendant chloride groups undergo post-modification with 4-hydroxybenzophenone. Achieved well-defined side-chain benzophenone containing copolymers generate ketyl radicals in the presence of excess hydrogen donor mol. upon UV-light irradiation and intramolecularly crosslinked nanoparticles are formed by radical coupling process in dilute regime. Resulting single chain nanoparticles and intermediates are characterized by 1H NMR, gel permeation chromatog., differential scanning calorimetry, UV-Vis spectrometry and electron microscopy techniques.

European Polymer Journal published new progress about Glass transition temperature. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Formula: C9H9Cl.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Koler, Amadeja; Krajnc, Peter published the artcile< Surface Modification of Hypercrosslinked Vinylbenzyl Chloride PolyHIPEs by Grafting via RAFT>, Application In Synthesis of 1592-20-7, the main research area is vinylbenzyl chloride hypercrosslinking surface modification polyHIPE grafting RAFT.

Grafting of glycidyl methacrylate from the surface of macroporous poly(4-vinylbenzyl chloride-co-divinylbenzene) polyHIPEs (poly high internal phase emulsions) prepared by the polymerization of the continuous phase of high internal phase emulsions is performed. PolyHIPEs are hypercrosslinked using Friedel-Crafts reaction thus increasing sp. surface area, and further functionalized with tris(2-aminoethyl) amine. To the free amino groups reversible addition-fragmentation chain transfer (RAFT) agent 4-cyano-4-[(dodecylsulfanylthiocarbonyl) sulfanyl] pentanoic acid is immobilized and grafting is performed utilizing glycidyl methacrylate. Poly(glycidyl methacrylate) chains of ≈100 units in length are grafted onto the surface of the polyHIPEs. In comparison, non-hypercrosslinked monoliths allow for substantially lower degree of immobilization of RAFT agent suggesting decreased accessibility of active sites on the polymer surface.

Macromolecular Chemistry and Physics published new progress about Crosslinking. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Application In Synthesis of 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wang, Chunyu; Liu, Yingze; Shao, Yue; Tang, Zian; Wen, Zhendong; Liang, Fuxin; Yang, Zhenzhong published the artcile< Zwitterionic Polymer Hairy Coating onto Mesh toward Easy Oil/Water Separation>, COA of Formula: C9H9Cl, the main research area is zwitterionic sulfobetaine methacrylate polymer graft coating stainless steel mesh; oil water separation membrane coating stainless steel mesh; coating; hairy structures; meshes; oil/water separation; zwitterionic polymers.

A zwitterionic polymeric hair-coated stainless steel mesh membrane is fabricated, which demonstrates efficient separation of oil/H2O mixtures and emulsions. The hairy coating of poly(divinylbenzene-co-vinylbenzene chloride) is generated by precipitation cationic polymerization, and subsequently grafting a zwitterionic polymer layer by atom transfer radical polymerization of sulfobetaine methacrylate. The microstructure of the hairy coating is tunable from an array of individual nanofibers to porous networks by interweaving of the hairs. The long-range attraction of zwitterionic polymers with H2O renders the coated mesh with excellent superhydrophilic and underwater superoleophobic performance. The coated mesh is highly antifouling to avoid the prehydration in conventional methods. Also, the microstructure is responsible for the high separation efficiency of oil/H2O emulsion. Therefore, separation of oil/H2O mixtures and emulsions becomes easier by the coated mesh, which is promising in industrial oil field sewage treatment.

Macromolecular Rapid Communications published new progress about Atom transfer radical polymerization. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, COA of Formula: C9H9Cl.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Ahmadi-khaneghah, Aziz; Salehi, Saeed; Behniafar, Hossein published the artcile< Polystyrene networks with polyoxyethylene cross-links covalently grafted onto nano-SiO2 cores: surface-initiated ATRP and thermal investigations>, SDS of cas: 1592-20-7, the main research area is polystyrene network polyoxyethylene crosslink silica ATRP.

Crosslinked polystyrene loaded by silica nanoparticles (CPS/SNPs) with hydrophilic nature was prepared via a solvent-free surface-initiated atom transfer radical polymerization technique. Chem. immobilization of the initiator of the polyaddition reactions was performed on silica nanoparticles. Also, polyoxyethylene chains capped with styrenic end units were synthesized from the reaction of 4-chloromethyl styrene and polyethylene glycol with mole ratios of 2:1 and then used as the chain crosslinker. In addition to CPS/SNPs composite, a crosslinked material lacking silica cores (CPS) was also prepared by a similar technique. Thermal stabilities of the resulting crosslinked polystyrenes were fully investigated by thermogravimetric anal./differential thermogravimetry. The silica-containing crosslinked material clearly showed more thermal stability than the bare material. In addition, both CPS/SNPs and CPS presented thermal stabilities nearly as much as other polystyrene-silica materials reported in the literature. Thus, the polyoxyethylene crosslinks did not cause addnl. thermal sensitivity in the network obtained. Furthermore, DTA measurements demonstrated that the phase transition caused by the thermal decomposition in CPS/SNPs composite is significantly reduced due to the presence of silica cores.

Polymer Bulletin (Heidelberg, Germany) published new progress about Atom transfer radical polymerization. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, SDS of cas: 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zeng, Lingping; Liao, Yunchuan; Wang, Jianchuan; Wei, Zidong published the artcile< Construction of highly efficient ion channel within anion exchange membrane based on interpenetrating polymer network for H2/Air (CO2-free) alkaline fuel cell>, Quality Control of 1592-20-7, the main research area is alk fuel cell interpenetrating polymer network anion exchange membrane.

Interpenetrating polymer network anion exchange membrane (IPN AEM) consists of cross-linked quaternized poly (vinylbenzyl chloride) and cross-linked poly (vinyl alc.) is synthesized in this work. Electron microscope clearly reveals the IPN structure, and with this structural design, a highly efficient ion channel within IPN AEMs is constructed. This specially designed structure leads to high hydroxide (OH-) conductivity (e.g., 141.7 mS cm-1 at 80°C) at a moderate ion exchange capacity (IEC) of 1.61 mmol g-1, and a remarkable peak power d. of 0.64 W cm-2 with non-noble metal oxygen reduction reaction (ORR) catalyst in H2/Air (CO2-free) anion exchange membrane fuel cells (AEMFCs) test.

Journal of Power Sources published new progress about Alkaline fuel cells. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Quality Control of 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Kilic, Deniz; Karaca Balta, Demet; Saloglu, Didem; Temel, Gokhan published the artcile< Synthesis and characterization of POSS hybrid organogels using Menschutkin quaternization chemistry>, Reference of 1592-20-7, the main research area is POSS hybrid organogel Menschutkin quaternization chem.

The present research describes a series of organic-inorganic hybrid gels based on polystyrene and polyhedral oligomeric silsesquioxanes (POSSs) prepared using free radical copolymerization and Menschutkin chem. techniques. In the first step, poly(styrene-co-chloromethylstyrene) is readily achieved by thermally initiated radical copolymerization and the subsequently obtained copolymer reacts with diethanolamine functional POSS nanoparticles which are employed as the crosslinker. The resulting hybrid network possesses ionic moieties and inorganic POSS nanoparticles. The POSS-containing hybrid gels exhibit excellent organic solvent absorption and show good mech. behavior. Gel containing 0.8 × 10-3 mmol of POSS(DEA)8 (DEA, diethanolamine) reached the highest swelling ratio; hence, the corresponding gel can absorb organic solvent up to 20× its weight The rate constant, coefficients and diffusional behavior of hybrid organogels in organic solvent were examined as well. The organic solvent intake of the hybrid gel follows a non-Fickian type diffusion. © 2018 Society of Chem. Industry.

Polymer International published new progress about Crosslinking agents. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Reference of 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Bai, Lu; Luo, Pan; Yang, Xudong; Xu, Jianquan; Kawaguchi, Daisuke; Zhang, Cuiyun; Yamada, Norifumi L.; Tanaka, Keiji; Zhang, Wei; Wang, Xinping published the artcile< Enhanced Glass Transition Temperature of Thin Polystyrene Films Having an Underneath Cross-Linked Layer>, COA of Formula: C9H9Cl, the main research area is ultrathin polystyrene film glass transition temperature chain mobility conformation.

Due to the importance of the interface in the segmental dynamics of supported macromol. ultrathin films, the glass transition temperature (Tg) of polystyrene (PS) ultrathin films upon solid substrates modified with a crosslinked PS (CLPS) layer has been investigated. The results showed that the Tg of the thin PS films on a silica surface with a ∼ 5 nm crosslinked layer increased with reducing film thickness. Meanwhile, the increase in Tg of the thin PS films became more pronounced with increasing crosslinking d. of the layer. For example, a 20 nm thick PS film supported on CLPS with 1.8 kDa of crosslinking degree exhibited an ∼35 K and ∼50 K increase in Tg compared to its bulk and that on neat SiO2 substrate, resp. Such a large Tg elevation for the ultrathin PS films was attributed to the interfacial aggregation states in which chains diffused through nanolevel voids formed in the crosslinked layer to the SiO2-Si surface. In such a situation, the chains were topol. constrained in the crosslinked layer with less mobility. These results offer us the opportunity to tailor interfacial effects by changing the degree of crosslinking, which has great potential application in many polymer nanocomposites.

ACS Macro Letters published new progress about Annealing. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, COA of Formula: C9H9Cl.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Rubio-Cervilla, Jon; Frisch, Hendrik; Barner-Kowollik, Christopher; Pomposo, Jose A. published the artcile< Synthesis of Single-Ring Nanoparticles Mimicking Natural Cyclotides by a Stepwise Folding-Activation-Collapse Process>, Safety of 1-(Chloromethyl)-4-vinylbenzene, the main research area is chloromethylstyrene styrene copolymer cyclized azidated CuAAC crosslinked cyclotide mimetic; RAFT polymerization; cyclic polymers; photochemistry; single chain folding; single chain nanoparticles.

Cyclotides are small cyclic polypeptides found in a variety of organisms, ranging from bacteria to plants. Their ring structure endows those polypeptides with specific properties, such as improved stability against enzymic degradation Optimal cyclotide activity is often observed only in the presence of intra-ring disulfide bonds. Synthesis of soft nano-objects mimicking the conformation of natural cyclotides remains challenging. Here, a new class of natural cyclotide mimics synthesized by a stepwise folding-activation-collapse process at high dilution starting from simple synthetic precursor polymers is established. The initial folding step is carried out by a photoactivated hetero Diels-Alder (HDA) ring-closing reaction, which is accompanied by chain compaction of the individual precursor polymer chains as determined by size exclusion chromatog. (SEC). The subsequent activation step comprises a simple azidation procedure, whereas the final collapse step is driven by CuAAC in the presence of an external crosslinker, providing addnl. compaction to the final single-ring nanoparticles (SRNPs). The unique structure and compaction degree of the SRNPs is established via a detailed comparison with conventional single-chain nanoparticles (SCNPs) prepared exclusively by chain collapse from the exact same precursor polymer (without the prefolding step). The stepwise folding-activation-collapse approach opens new avenues for the preparation of artificial cyclotide mimetics.

Macromolecular Rapid Communications published new progress about Azide-alkyne 1,3-dipolar cycloaddition reaction. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Safety of 1-(Chloromethyl)-4-vinylbenzene.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Meng, Qing-Yuan; Doeben, Nadine; Studer, Armido published the artcile< Cooperative NHC and Photoredox Catalysis for the Synthesis of β-Trifluoromethylated Alkyl Aryl Ketones>, Electric Literature of 1592-20-7, the main research area is trifluoromethyl alkyl aryl ketone preparation; cooperative photoredox catalyzed trifluoromethylation styrene acid fluoride; NHC catalysis; trifluoromethylation; visible light catalysis.

Despite the great potential of radical chem. in organic synthesis, N-heterocyclic carbene (NHC)-catalyzed reactions involving radical intermediates are not well explored. This communication reports the three-component coupling of aroyl fluorides, styrenes and the Langlois reagent (CF3SO2Na) to give various β-trifluoromethylated alkyl aryl ketones with good functional group tolerance in moderate to high yields by cooperative photoredox/NHC catalysis. The alkene acyltrifluoromethylation proceeds via radical/radical cross coupling of ketyl radicals with benzylic C-radicals. The ketyl radicals are generated via SET reduction of in situ formed acylazolium ions whereas the benzylic radicals derive from trifluoromethyl radical addition onto styrenes.

Angewandte Chemie, International Edition published new progress about Acid fluorides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Electric Literature of 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Aggarwal, Kanika; Bsoul, Saja; Douglin, John C.; Li, Songlin; Dekel, Dario R.; Diesendruck, Charles E. published the artcile< Alkaline Stability of Low Oxophilicity Metallopolymer Anion-Exchange Membranes>, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene, the main research area is oxophilicity metallopolymer anion exchange membrane alk stability; anion exchange membranes; fuel cells; gold; metallopolymers; oxophilicity.

Anion-exchange membrane fuel cells (AEMFCs) are promising energy conversion devices due to their high efficiency. Nonetheless, AEMFC operation time is currently limited by the low chem. stability of their polymeric anion-exchange membranes. In recent years, metallopolymers, where the metal centers assume the ion transport function, have been proposed as a chem. stable alternative. Here we present a systematic study using a polymer backbone with side-chain N-heterocyclic carbene (NHC) ligands complexed to various metals with low oxophilicity, such as copper, zinc, nickel, and gold. The golden metallopolymer, using the metal with the lowest oxophilicity, demonstrates exceptional alk. stability, far superior to state-of-the-art quaternary ammonium cations, as well as good in situ AEMFC results. These results demonstrate that judiciously designed metallopolymers may be superior to purely organic membranes and provides a scientific base for further developments in the field.

Chemistry – A European Journal published new progress about Anion exchange membranes. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics