Category: 1592-20-7

Moon, Jihyeon; Kang, Chaewon; Kang, Hyo published the artcile< Vertical alignment of liquid crystals on phenylphenoxymethyl-substituted polystyrene-PS derivatives structurally similar to LC molecules>, Product Details of C9H9Cl, the main research area is liquid crystal phenylphenoxymethyl polystyrene surface energy property; 4-phenylphenol; alignment layer; liquid crystal; polystyrene; precursor.

A series of polystyrene derivatives containing precursors of liquid crystal (LC) mols., phenylphenoxymethyl-substituted polystyrene (PPHE#; # = 5, 15, 25, 50, 75, and 100)-where # is the molar content of 4-phenylphenol using polymer modification reactions-were prepared in order to examine the effect of the polymer film, which possess similar LC mol. structure on the LC alignment properties. It was found that the Tg values of the PPHE# were higher than 100°C due to their aromatic structure in the biphenyl-based PHE moiety. The LC cells fabricated with PPHE5 and PPHE15 films exhibited planar LC alignment. Conversely, LC mols. showed a vertical alignment in LC cells made using the polymer films with phenylphenoxymethyl side groups in the range of 25-100 mol %. The polar surface energies on the PPHE# films can be associated with the vertical LC alignment on the PPHE# films. For example, vertical LC alignment was exhibited when the polar surface energy of the polymer films was less than approx. 4.2 mJ/m2. Aligning stability was observed at 200°C and UV irradiation of 20 J/cm2 for LC cells made using the PPHE100 film. Therefore, it was found that biphenyl, one of the LC precursors, modified polystyrene derivatives and can produce a next-generation vertical LC alignment system.

Polymers (Basel, Switzerland) published new progress about Contact angle. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Product Details of C9H9Cl.

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

Sudo, Yu; Kawai, Ryuki; Nabae, Yuta; Hayakawa, Teruaki; Kakimoto, Masa-aki published the artcile< Self-condensing vinyl polymerization of a switchable chain transfer monomer for facile synthesis of star-shaped block copolymers>, Reference of 1592-20-7, the main research area is star polymer switchable chain transfer agent.

Reversible addition-fragmentation chain transfer-self-condensing vinyl polymerization (RAFT-SCVP) is a versatile methodol. for synthesizing hyperbranched polymers with a large number of chain transfer termini. Also, this method easily provides star-shaped block copolymers by another sequence of RAFT polymerizations The design of such block copolymers, however, is still limited because the structure of chain transfer groups needed to be selected in accordance with the activity of monomers. This paper proposes a new class of styrene-type monomer, namely (4-vinyl)benzyl-N-methyl-N-(4-pyridyl)dithiocarbamate (VPDC), as a universal chain transfer monomer for facile synthesis of star-shaped block copolymers. VPDC effectively works as a chain transfer monomer for RAFT-SCVP in protonated form, providing hyperbranched polystyrene (PVPDC). The RAFT polymerization of a more-activated monomer (MAM), in this case N-isopropylacrylamide, was demonstrated from the same RAFT agent, whereas that of a less-activated monomer (LAM), namely vinyl acetate, was also achieved after switching the activity of the termini by deprotonation of the chain transfer agent (CTA). All in all, we believe that the current findings will enable facile synthesis of more varied star-shaped block copolymers with flexible design.

Applied Surface Science published new progress about Branched polymers, star-branched Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Seo, Kyutae; Kang, Hyo published the artcile< Vertical Orientation of Liquid Crystal on Polystyrene Substituted with n-Alkylbenzoate-p-oxymethyl Pendant Group as a Liquid Crystal Precursor>, Formula: C9H9Cl, the main research area is polystyrene oxymethyl pendant liquid crystal polymer film physicochem property; anisotropic material; liquid crystal; n-alkyl-p-hydroxybenzoate; orientation layer; polystyrene.

We synthesized a series of polystyrene derivatives modified with precursors of liquid crystal (LC) mols. via polymer modification reactions. Thereafter, the orientation of the LC mols. on the polymer films, which possess part of the corresponding LC mol. structure, was investigated systematically. The precursors and the corresponding derivatives used in this study include ethyl-p-hydroxybenzoate (homopolymer P2BO and copolymer P2BO#, where # indicates the molar fraction of ethylbenzoate-p-oxymethyl in the side chain (# = 20, 40, 60, and 80)), n-butyl-p-hydroxybenzoate (P4BO), n-hexyl-p-hydroxybenzoate (P6BO), and n-octyl-p-hydroxybenzoate (P8BO). A stable and uniform vertical orientation of LC mols. was observed in LC cells fabricated with P2BO#, with 40 mol% or more ethylbenzoate-p-oxymethyl side groups. In addition, the LC mols. were oriented vertically in LC cells fabricated with homopolymers of P2BO, P4BO, P6BO, and P8BO. The water contact angle on the polymer films can be associated with the vertical orientation of the LC mols. in the LC cells fabricated with the polymer films. For example, vertical LC orientation was observed when the water contact angle of the polymer films was greater than ∼86°. Good orientation stability was observed at 150°C and with 20 J/cm2 of UV irradiation for LC cells fabricated with the P2BO film.

Polymers (Basel, Switzerland) published new progress about Contact angle. 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

Chen, Chien Han; Jheng, Jia Kai; Juang, Tzong Yuan; Abu-Omar, Mahdi M.; Hsuan Lin, Ching published the artcile< Structure-property relationship of vinyl-terminated oligo(2,6-dimethyl-1,4-phenylene ether)s (OPEs): Seeking an OPE with better properties>, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene, the main research area is vinyl terminated oligodimethylphenylene ether.

Vinylbenzyl ether-terminated oligo(2,6-dimethyl-1,4-phenylene ether) (1) has been commercialized by Mitsubishi Gas Chem. in the name of OPE-2St. OPE (1) is used in high-frequency printed circuit board due to its low-dielec. characteristic after curing. However, for thermoset of (1), there is room for property improvement in thermal mech. property, dielec. property, oxygen permeation resistance, and so on. In this work, we report the preparation of three new oligo(2,6-dimethyl-1,4-phenylene ether)s: the vinyl benzoate-terminated OPE (2), the 3,5-bis(vinylbenzyl ether)benzyl ether-terminated OPE (3), and the 3,5-bis(vinylbenzyl ether)benzoate-terminated OPE (4), and compare their fundamental materials properties with the vinylbenzyl ether-terminated OPE (1). We discussed the effect of the number of vinyl groups (two or four) and the linker (benzyl ether or benzoate) on the properties of the four OPE thermosets. Through property evaluation and data analyses, we found that the thermoset of (4) show the highest Tg, modulus, oxygen permeation resistance, dimensional stability, and the lowest water absorption, and dielec. constant We also found that the toughness of thermoset of (4) can be significantly enhanced by the copolymerization with epoxy resin (HP7200) through the exchange reactions of benzoate and epoxy groups. In short, through properties comparison of four thermosets of (1-4), we demonstrate that (4) is a promising material for high-frequency printed circuit board.

European Polymer Journal published new progress about Contact angle. 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

Yang, DaEun; Jin, Chowon; Kang, Hyo published the artcile< Vertical Alignment of Liquid Crystal on Sustainable 2,4-Di-tert-butylphenoxymethyl-Substituted Polystyrene Films>, Related Products of 1592-20-7, the main research area is butylphenoxymethyl substituted polystyrene film liquid crystal; 2,4-di-tert-butylphenol; liquid crystal; orientation layer; polystyrene; vertical.

We synthesized sustainable 2,4-di-tert-butylphenoxymethyl-substituted polystyrenes (PDtBP#, # = 88, 68, 35, and 19, where # is molar percent contents of 2,4-di-tert-butylphenoxymethyl moiety), using post-polymerization modification reactions in order to study their liquid crystal (LC) alignment behaviors. In general, LC cells fabricated using polymer film with higher molar content of 2,4-di-tert-butylphenoxymethyl side groups showed vertical LC alignment behavior. LC alignment behavior in LC cell was related to the surface energy of the polymer alignment layer. For example, when the total surface energy value of the polymer layer was smaller than about 29.4 mJ/m2, vertical alignment behaviors were observed, generated by the nonpolar 2,4-di-tert-butylphenoxymethyl moiety with long and bulky carbon groups. Orientation stability was observed at 200°C in the LC cells fabricated using PDtBP88 as the LC alignment layer. Therefore, as a natural compound modified polymer, PDtBP# can be used as a candidate LC alignment layer for environmentally friendly applications.

Polymers (Basel, Switzerland) published new progress about Contact angle. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Related Products of 1592-20-7.

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

Song, Renyuan; Yu, Xiaofeng; Liu, Muxin; Hu, Xiaoling; Zhu, Shengqing published the artcile< Anion Exchange Affinity-Based Controllable Surface Imprinting Synthesis of Ultrathin Imprinted Films for Protein Recognition>, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene, the main research area is molecularly imprinted polymer anion exchange immobilization template protein recognition; anion exchange affinity-based interaction; immobilization template; protein recognition; surface-initiated photoiniferter-mediated polymerization.

Anion exchange affinity-based controllable surface imprinting is an effective approach to overcome low imprinting efficiency and high non-specific binding capacity. The template proteins were first immobilized on the anchored tetraalkylammonium groups of the nanoparticles via anion exchange affinity-based interactions, enabling monolayer sorption using a low template concentration The combined use of surface-initiated photoiniferter-mediated polymerization to precisely control the imprinted film thickness, allowing the formation of homogeneous binding cavities, and the construction of effective binding sites resulted in a low non-specific binding capacity and high imprinting efficiency. The obtained imprinted films benefited from the anion exchange mechanism, exhibiting a higher imprinting factor and faster binding rate than the reference material. Binding tests revealed that the binding strength and selective recognition properties could be tuned to a certain extent by adjusting the NaCl concentration Addnl., in contrast to the harsh template elution conditions of the covalent immobilization approach, over 80% of the template mols. were readily removed from the imprinted films using supersonic elution with an aqueous mixture of NaCl and HAc. Introducing template immobilization by anion exchange interactions to the synthesis of imprinted materials may provide a new approach for effective biomacromol. imprinting.

Polymers (Basel, Switzerland) published new progress about Anion exchange. 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

Zhu, Ming-Ming; Fang, Yu; Chen, Yan-Chen; Lei, Yu-Qing; Fang, Li-Feng; Zhu, Bao-Ku; Matsuyama, Hideto published the artcile< Antifouling and antibacterial behavior of membranes containing quaternary ammonium and zwitterionic polymers>, Quality Control of 1592-20-7, the main research area is antifouling antibacterial membrane; Antibacterial; Antifouling; Membrane; Quaternary ammonium; Zwitterionic polymer.

To overcome the organic-/bio- fouling of the membrane, a dual-functional ultrafiltration membrane containing quaternary ammonium and zwitterionic polymers via quaternization and surface radical polymerization was designed, and its antifouling and antibacterial behavior was studied. In this work, poly(vinylidene fluoride)/poly(Me methacrylate-co-dimethylamino-2-Et methacrylate) (PVDF/P(MMA-co-DMAEMA)) blend membrane was quaternized by p-chloromethyl styrene (p-CMS), and the double bonds were introduced onto the membrane surface, which further participated in the polymerization of zwitterionic monomers on the membrane surface. The results indicated that the resultant membrane exhibited obviously improved hydrophilicity and weak pos. charge (isoelec. point, 7.49). The membrane presented higher flux recovery ratio and lower protein adhesion compared with the pure PVDF membrane. Meanwhile, the membrane showed high-efficiency broad-spectrum antibacterial performance, i.e., the bacteria killing efficiency of S. aureus and E. coli reached 98.2% and 97.0%, resp. Moreover, the membrane effectively inhibited bacterial adhesion, which is important for the long-term antibacterial properties of membrane. This antifouling and antibacterial PVDF membrane may have potential in the long-term filtration process, especially when dealing with microbiol. contaminated water.

Journal of Colloid and Interface Science published new progress about Antibacterial agents. 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

Takebuchi, Haruka; Kubosawa, Hiroki; Jin, Ren-Hua published the artcile< Synthesis and Thermo-responsiveness of Double Hydrophilic Block Copolymers with PNIPAM Coils and Poly(methyloxazoline)/Poly(ethyleneimine) Combs>, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene, the main research area is isopropylacrylamide methyloxazoline ethyleneimine comb coil block copolymer hydrophilicity thermoresponsivity.

Two types of double-hydrophilic comb-coil block copolymers, (PVBC-g-PMOZ)-b-PNIPAM and (PVBC-g-PEI)-b-PNIPAM, possessing combs of poly(methyloxazoline) (PMOZ)/crystalline poly(ethyleneimine) (PEI) and coils of thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) were synthesized by a combination of RAFT block copolymerization of 4-chloromethyl styrene and N-isopropylacrylamide (NIPAM), ring-opening polymerization of 2-methyloxazoline, and the selective hydrolysis of PMOZ. These polymers showed remarkable thermo-responsiveness to give thermo-induced aggregates with different morphologies.

Chemistry Letters published new progress about Cationic ring-opening polymerization. 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

Chen, Pingping; Liu, Xu; Wang, Shi; Zeng, Qinghui; Wang, Zhinan; Li, Zengxi; Zhang, Liaoyun published the artcile< Confining Hyperbranched Star Poly(ethylene oxide)-Based Polymer into a 3D Interpenetrating Network for a High-Performance All-Solid-State Polymer Electrolyte>, Name: 1-(Chloromethyl)-4-vinylbenzene, the main research area is hyperbranched star PEO interpenetrating network solid polymer battery electrolyte; solid lithium battery electrolyte PEO polystyrene nanoconfinement crosslinking; 3D rigid framework; all-solid-state polymer electrolyte; hyperbranched star polymer; lithium-ion battery; nanoconfinement.

The original poly(ethylene oxide)-based polymer electrolytes normally show low ionic conductivity and inferior mech. property, which greatly restrict their practical application in all-solid-state lithium-ion batteries (LIBs). In this work, a hyperbranched star polymer with poly(ethylene glycol) Me ether methacrylate flexible chain segments is embedded into a three-dimensional (3D) interpenetrating crosslinking network created by the rapid one-step UV-derived photopolymerization of the cross-linker (ethoxylated trimethylolpropane triacrylate) in the presence of lithium salt. The rigid 3D network framework provides the polymer electrolyte with not only enhanced mech. behavior, including film-forming and dendrite-inhibiting capabilities, but also nanoconfinement effects, which can speed up polymer chain segmental dynamics and reduce the crystallinity of the polymer. Depending on this unique rigid-flexible coupling network, the prepared solid polymer electrolyte shows enhanced ionic conductivity (6.8 × 10-5 S cm-1 at 50 °C), widened electrochem. stability window (5.1 V vs Li/Li+), and enough mech. stability to suppress the growth of uneven Li dendrite (the Li sym. cells can operate steadily at both current densities of 0.05 and 0.1 mA cm-2 for 1000 h). Moreover, the assembled LiFePO4//Li cell also exhibited good cycle performance at 50 °C, making the hyperbranched star polymer electrolyte with a nanoconfined crosslinking structure to have potential application in high-safety and high-performance LIBs.

ACS Applied Materials & Interfaces published new progress about Activation energy. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Name: 1-(Chloromethyl)-4-vinylbenzene.

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

Ge, Qianqian; Liang, Xian; Ding, Liang; Hou, Jianqiu; Miao, Jibin; Wu, Bin; Yang, Zhengjin; Xu, Tongwen published the artcile< Guiding the self-assembly of hyperbranched anion exchange membranes utilized in alkaline fuel cells>, Safety of 1-(Chloromethyl)-4-vinylbenzene, the main research area is hyperbranched polyvinylbenzyl chloride diamine crosslinked anion exchange membrane; self assembly hyperbranched anion exchange membrane alk fuel cells.

Anion exchange membrane fuel cells (AEMFCs) can efficiently convert chem. energy into electricity at high pH. However, as the critical component, the existing anion exchange membranes (AEMs), cannot have both high stability and high conductivity, which is intrinsic to the conventional linear AEMs. To address this, here we report hyperbranched AEMs cross-linked by diamines and proposed a strategy to guide the self-assembly of hyperbranched AEMs, thereby regulating the membrane microphase morphol. We found that the chain length of the diamine crosslinking agents plays a significant role in guiding the formation of microphase separated morphol. inside hyperbranched AEMs and influences eventually the membrane conductivity and stability. The hyperbranched membrane HBM-6C exhibits the most distinct microphase separated morphol., leading to high conductivity and improved alk. stability. For instance, the hydroxide conductivity of HBM-6C membrane is 27.18 mS cm-1 at 30 °C, 2.7 times of the linear counterpart membrane [PTMVPMA][OH] (10 mS cm-1). A H2/O2 AEMFC assembled with HBM-6C membrane herein demonstrates a maximum power d. of 97 mW cm-2 at a c.d. of 190 mA cm-2. Our results would pave the way towards AEMs with novel chain architecture and stimulate further improvement in AEMFC performance.

Journal of Membrane Science published new progress about Alkaline fuel cells. 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