Category: 1592-20-7

Kim, Taehyung; Ju, Changha; Park, Chanhyuk; Kang, Hyo published the artcile< Enhanced, parallel liquid crystal alignment based on polystyrene substituted with phthalimidoyl groups>, Application In Synthesis of 1592-20-7, the main research area is phthalimidoyl group polystyrene liquid crystal alignment.

A series of polystyrene (PS) polymers substituted with phthalimide (PPH#), where # is the degree of substitution, were synthesized via a polymer analogus reaction to investigate liquid crystal (LC) alignment behaviors of LC cells fabricated using PPH# films. The PPH# films exhibited higher optical transparency in the visible light region compared to a com. polyimide (PI) film. The transmittance of each PPH# film ranged from 91 to 93%, whereas that of PI was 80.5% at 550 nm. The LC cell fabricated with a pristine PS film showed planar LC alignment perpendicular with respect to the rubbing direction. The introduction of the phthalimide group to the side chain of PS diverted the LC alignment direction from perpendicular to parallel with respect to the rubbing direction. The LC cells fabricated with PPH# films exhibited planar LC alignment parallel with respect to the rubbing direction when the degree of substitution of phthalimidoyl moieties was >20 mol%. In addition, the long-term stability of the LC cell composed of pristine PS was very low. However, the long-term stability of the LC cells fabricated with the PPH# series was remarkably enhanced in addition to their UV stability. Therefore, this study contributes to the development of planar and parallel LC alignments on PS derivatives and can be used in the next-generation display industry for the production of flexible displays.

RSC Advances published new progress about Glass transition temperature. 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

Peltekoff, Alexander J.; Hiller, Victoria E.; Lopinski, Gregory P.; Melville, Owen A.; Lessard, Benoit H. published the artcile< Unipolar Polymerized Ionic Liquid Copolymers as High-Capacitance Electrolyte Gates for n-Type Transistors>, Product Details of C9H9Cl, the main research area is unipolar polymerized ionic liquid copolymer capacitance electrolyte transistor.

A series of well-defined polymerized ionic liquid (PIL) statistical and block copolymers consisting of ionic liquid monomer, 1-(4-vinylbenzyl)-3-butylimidazolium bis(trifluoromethylsulfonyl)imide, and a nonionic monomer, Me methacrylate (MMA), were synthesized by nitroxide-mediated polymerization (NMP) with the goal of understanding the influence of polymer structure on the thin film capacitance. Copolymer compositions were varied from 8 to 54 weight % for both statistical and block copolymers and were characterized by predictable changes in glass transition temperature (75 °C > Tg > 45 °C). When integrated into thin film capacitors, block copolymers exhibited the formation of elec. double layer (EDL) at lower frequencies compared to the statistical copolymers of similar comonomer compositions The materials that formed an EDL all produced a similar maximum double layer capacitance value, with the only difference being the frequency at which the EDL was formed. Finally, the PIL-containing materials that were utilized in organic thin-film transistors (OTFTs) showed a significant reduction in operating voltage compared to the poly(MMA) baseline. These results indicate that not only composition but also polymer architecture plays a vital role in the formation of an EDL and determines at which frequency the resulting OTFTs can be operated.

ACS Applied Polymer Materials published new progress about Cationic polyelectrolytes. 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

Ju, Changha; Park, Chanhyuk; Kim, Taehyung; Kang, Shinwoo; Kang, Hyo published the artcile< Thermo-responsive draw solute for forward osmosis process; poly(ionic liquid) having lower critical solution temperature characteristics>, Synthetic Route of 1592-20-7, the main research area is polyvinylbenzyltributylammonium hexanesulfonate osmosis viscosity water desalination.

We synthesized poly(4-vinylbenzyltributylammonium hexanesulfonate) (P[VBTBA][HS]), a poly(ionic liquid) that shows lower critical solution temperature (LCST), via the anion exchange reaction of poly(4-vinylbenzyltributylammonium chloride) (P[VBTBA][Cl]) with sodium hexanesulfonate in order to investigate its suitability as a draw solute for the forward osmosis (FO) process. P[VBTBA][Cl] was obtained by the free radical polymerization of (4-vinylbenzyltributylammonium chloride [VBTBA][Cl]) monomer acquired by the Menshutkin reaction. The FO performance and recovery properties of the synthesized materials were systematically investigated. For example, the LCST of P[VBTBA][HS] was observed to be ∼17°C at 20 wt%, while no LCST was observed for [VBTBA][Cl] monomer and P[VBTBA][Cl] polymer before the anion exchange reaction, indicating that P[VBTBA][HS] can be recovered from the aqueous solution by heating it to above its LCST. Moreover, in an active layer facing the feed solution (AL-FS) system containing 20 wt% aqueous P[VBTBA][HS] solution at 15°C, the water flux and reverse solute flux of P[VBTBA][HS] were found to be ∼5.85 L m-2 h-1 and 1.13 g m-2 h-1, resp. Therefore, we studied the feasibility of using the poly(ionic liquid), a homopolymer having LCST characteristics, as a draw solute in the FO process.

RSC Advances published new progress about Critical solution temperature. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Synthetic Route of 1592-20-7.

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

Sen, Sudeshna; Goodwin, Sean E.; Barbara, Pedro Verdia; Rance, Graham A.; Wales, Dominic; Cameron, Jamie M.; Sans, Victor; Mamlouk, Mohamed; Scott, Keith; Walsh, Darren A. published the artcile< Gel-Polymer Electrolytes Based on Poly(Ionic Liquid)/Ionic Liquid Networks>, Formula: C9H9Cl, the main research area is gel polymer electrolyte ionic liquid conductivity crosslinking membrane.

The use of elec. charged, polymerized ionic liquids (polyILs) offers opportunities for the development of gel-polymer electrolytes (GPEs), but the rational design of such systems is in its infancy. In this work, we compare the properties of polyIL/IL GPEs based on 1-butyl-3-(4-vinylbenzyl)imidazolium bis(trifluromethanesulfonyl)imide containing trapped ammonium-based protic ionic liquids (ILs) with an analogous series based on the elec. neutral host polymer 1-(4-vinylbenzyl)imidazole. The materials are synthesized by photopolymerizing ionic and neutral monomers in the presence of diethylmethylammonium trifluoromethanesulfonate, [dema][TfO], diethylmethylammonium trifluoroacetate, [dema][TFAc], and diethylmethylammonium bis[trifluoromethanesulfonyl]imide, [dema][Tf2N], resp. The resulting materials are characterized using electron microscopy, IR spectroscopy, thermal anal., Raman spectroscopy, and AC-impedance anal. Spectroscopic anal. confirms that the ILs are distributed throughout the polymers, unless the GPE also contains poly(diallyldimethylammonium) bis[trifluoromethanesulfonyl]imide, when separation of the components occurs. The polyIL/IL GPEs are more electrochem. and thermally stable, and up to six times more conductive, than the materials based on the neutral host. As a proof-of-concept demonstration, we show that polyIL/IL gels can be 3D printed using readily available 3D-printing hardware.

ACS Applied Polymer Materials published new progress about Crosslinking. 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

Liang, He; Yin, Jie; Man, Kenny; Yang, Xuebin B.; Calciolari, Elena; Donos, Nikolaos; Russell, Stephen J.; Wood, David J.; Tronci, Giuseppe published the artcile< A long-lasting guided bone regeneration membrane from sequentially functionalised photoactive atelocollagen>, Safety of 1-(Chloromethyl)-4-vinylbenzene, the main research area is bone regeneration membrane photoactive atelocollagen; Atelocollagen; Barrier membrane; Enzymatic stability; Guided Bone Regeneration; Sequential functionalisation; UV curing.

The fast degradation of collagen-based membranes in the biol. environment remains a critical challenge, resulting in underperforming Guided Bone Regeneration (GBR) therapy leading to compromised clin. results. Photoactive atelocollagen (AC) systems functionalised with ethylenically unsaturated monomers, such as 4-vinylbenzyl chloride (4VBC), have been shown to generate mech. competent materials for wound healing, inflammation control and drug delivery, whereby control of the mol. architecture of the AC network is key. Building on this platform, the sequential functionalisation with 4VBC and methacrylic anhydride (MA) was hypothesised to generate UV-cured AC hydrogels with reduced swelling ratio, increased proteolytic stability and barrier functionality for GBR therapy. The sequentially functionalised atelocollagen precursor (SAP) was characterised via TNBS and ninhydrin colorimetric assays, CD and UV-curing rheometry, which confirmed nearly complete consumption of collagen′s primary amino groups, preserved triple helixes and fast (< 180 s) gelation kinetics, resp. Hydrogel′s swelling ratio and compression modulus were adjusted depending on the aqueous environment used for UV-curing, while the sequential functionalisation of AC successfully generated hydrogels with superior proteolytic stability in vitro compared to both 4VBC-functionalised control and the com. dental membrane Bio-Gide. These in vitro results were confirmed in vivo via both s.c. implantation and a proof-of-concept study in a GBR calvarial model, indicating integrity of the hydrogel and barrier defect, as well as tissue formation following 1-mo implantation in rats. Collagen-based membranes remain a key component in Guided Bone Regeneration (GBR) therapy, but their properties, e.g. proteolytic stability and soft tissue barrier functionality, are still far from optimal. This is largely attributed to the complex mol. configuration of collagen, which makes chem. accessibility and structure-function relations challenging. Here, we fabricated a UV-cured hydrogel network of atelocollagen, whereby triple helixes were sequentially functionalised with two distinct ethylenically unsaturated monomers. The effects of the sequential functionalisation and UV-curing on the macroscopic properties, degradation behavior and GBR capability were investigated in vitro and in vivo. The results highlight the key role of the sequential functionalisation and provide important insights for the design of future, longer-lasting resorbable membranes for GBR therapy. Acta Biomaterialia published new progress about Bone. 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

Moon, Jihyeon; Seo, Kyutae; Kang, Hyo published the artcile< Vertical alignment of liquid crystals on comb-like renewable chavicol-modified polystyrene>, Formula: C9H9Cl, the main research area is vertical alignment liquid crystal chavicol polystyrene copolymer; alignment; chavicol; liquid crystal; phytochemical; renewable.

This study demonstrates liquid crystal (LC) alignment behaviors on the surface of phytochem.-based and renewable chavicol-modified polystyrene (PCHA#, # = 20, 40, 60, 80, and 100, where # represent the molar content of chavicol moiety in the side group) via polymer modification reactions. Generally, a LC cell fabricated with a polymer film containing a high molar content of the chavicol side group exhibited a vertical LC alignment property. There is a correlation between the vertical alignment of LC mols. and the polar surface energy value of the polymer films. Therefore, vertical LC alignment was observed when the polar surface energy values of these polymer films were smaller than about 1.3 mJ/m2, induced by the nonpolar chavicol moiety having long and bulky carbon groups. Aligning stability under harsh conditions such as UV irradiation of about 5 J/cm2 was observed in the LC cells fabricated from PCHA 100 film. Therefore, it was found that the plant-based chavicol-substituted polymer system can produce an eco-friendly and sustainable LC alignment layer for next-generation applications.

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

Lambert, Romain; Wirotius, Anne-Laure; Vignolle, Joan; Taton, Daniel published the artcile< C-C couplings in water by micellar catalysis at low loadings from a recyclable polymer-supported Pd(II)-NHC nanocatalyst>, COA of Formula: C9H9Cl, the main research area is polymer supported palladium nanocatalyst micellar catalysis coupling reaction.

A specifically devised amphiphilic star-like polymer-supported Pd(II)-NHC2 unit (NHC = N-heterocyclic carbene) enables highly efficient micellar catalysis in pure water. An amphiphilic block copolymer carrying benzimidazolium moieties randomly distributed along the hydrophobic block is precisely synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization Addition of Pd(OAc)2 followed by nanopptn. in water drives the metal-ligand coordination core-crosslinking reaction and the segregation of Pd-NHC2 units in the hydrophobic core to form robust polymeric micelles. This approach confers multiple advantages to both the Suzuki-Miyaura and Heck cross-coupling reactions, including robustness, almost no metal leaching, low catalyst loadings (0.1 mol% rel. to the substrate), easy recycling, very broad substrate scope and exceptionally high catalytic activity in water.

Polymer Chemistry published new progress about Heck reaction catalysts. 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

Goldfeld, David J.; Silver, Eric S.; Radlauer, Madalyn R.; Hillmyer, Marc A. published the artcile< Synthesis and Self-Assembly of Block Polyelectrolyte Membranes through a Mild, 2-in-1 Postpolymerization Treatment>, Computed Properties of 1592-20-7, the main research area is self assembly polyelectrolyte membrane mild postpolymn.

Block polymer systems containing spatially separated pos. and neg. charges are desirable for a number of applications, including biomedical devices, membrane separations, and coatings. Unfortunately, the tendency of pos. and neg. block polymers to charge cancel and form an insoluble coacervate precipitate leads to processing difficulties in the fabrication of charged thin films. We use postpolymn. modifications to simultaneously add both neg. and pos. charges to self-assembled neutral ABC triblock polymer thin films. Using reversible addition-fragmentation chain transfer polymerization, we synthesized triblock terpolymers consisting of poly(Pr styrene sulfonic ester), poly(4-chlorostyrene), and poly(vinylbenzyl chloride). The chem. functionalization of both charged blocks was accomplished simultaneously through exposure to gaseous trimethylamine in a single step at room temperature, simplifying the synthetic procedure and preserving the microstructure of the thin film. The quant. functionalization was tracked through attenuated total reflectance IR spectroscopy, and the thin film morphol. was evaluated using intermodulation at. force microscopy, transmission electron microscopy, and grazing-incidence small-angle X-ray scattering.

ACS Applied Polymer Materials published new progress about Amphoteric materials. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Computed Properties of 1592-20-7.

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

Chen, Zixu; Sun, Ruixue; Feng, Shengyu; Wang, Dengxu; Liu, Hongzhi published the artcile< Porosity-Induced Selective Sensing of Iodide in Aqueous Solution by a Fluorescent Imidazolium-Based Ionic Porous Framework>, COA of Formula: C9H9Cl, the main research area is porosity fluorescence imidazolium sensor iodide framework; imidazolium; iodide sensing; paper sensor; porous polymers; silsesquioxane.

Developing a chemosensor for rapid, sensitive, and visual detection of iodide (I-) by a simple synthetic strategy is still challenging. Herein, the authors report a highly efficient iodide sensor by simply introducing ionic imidazolium groups into the porous network. This sensor, i.e., a fluorescent ionic porous framework (IPF), was prepared by the quaternization reaction of octa((benzylchloride)ethenyl)silsesquioxane and 1,4-bis(1H-imidazole-1-yl)benzene and exhibited moderate porosity with a Brunauer-Emmett-Teller surface area of 379 m2 g-1 and blue fluorescence when excited by UV light. The IPF suspension in water can detect I- with high sensitivity and selectivity among various anions and quick response by fluorescence quenching. In contrast to no response toward I- by the linear model compound and the enhanced sensing performance with an increment of porosity, this finding indicates that the porosity of IPF is important for the detection of I- and an inducement of the sensing process. A fluorescent paper sensor was further developed, which shows high efficiency for the visual detection of I- similar to the abovementioned sensor, suggesting its potential in convenient and on-site sensing of I-. In addition, the paper sensor is recyclable with a remarkable fluorescence resuming ratio of 83% after 10 times cycle detection. Moreover, the developed sensor is used for the anal. of real samples. This work represents the first example of the detection of I- by an ionic porous polymer. Compared with conventional iodide sensors, the present sensor does not require unique structures to form the pseudocavity during sensing I- and can easily achieve high efficiency by incorporating ionic hydrogen bond donors into the porous network, indicating the importance of porosity and the feasibility of replacing the pseudocavity with a real cavity (or pore). More iodide sensors with high efficiency can be designed and fabricated by this novel and simple strategy.

ACS Applied Materials & Interfaces published new progress about Drinking waters. 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

Jia, Degong; Ma, Long; Wang, Yuan; Zhang, Wenli; Li, Jing; Zhou, Yu; Wang, Jun published the artcile< Efficient CO2 enrichment and fixation by engineering micropores of multifunctional hypercrosslinked ionic polymers>, Name: 1-(Chloromethyl)-4-vinylbenzene, the main research area is hypercrosslinked ionic polymer preparation cycloaddition epoxide cyclic carbonate.

Efficient chem. fixation of carbon dioxide (CO2) into valuable fine chems. requires porous materials with highly active catalytic centers. Herein, multifunctional imidazolium based hypercrosslinked ionic polymers with versatile functional groups (sulfonic, hydroxyl, amino, carboxyl, and alkyl group), abundant microporosity and high ionic site d. were constructed in a two-step solvothermal route including free-radical copolymerization of divinylbenzene (DVB), 4-vinylbenzyl chloride (VBC) and imidazolium bromide ionic liquids (ILs) and successive Friedel-Crafts alkylation based hypercrosslinkage. The resultant hydroxyl-functional ionic polymer demonstrated promising performances in selective adsorption and conversion of CO2 via cycloaddition with epoxide. High yield associating with large turnover number (TON) and turnover frequency (TOF), stable reusability and well substrate compatibility were achieved, affording an efficient metal-free heterogeneous catalyst for CO2 fixation. The full microporous structure resulted in CO2 enrichment around the robust hydroxyl-functional ionic sites, showing a synergistic effect to promote CO2 transformation.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Adsorption. 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