Category: 71195-85-2

Kubilis, Artur; Abdulkarim, Ali; Eissa, Ahmed M.; Cameron, Neil R. published the artcile< Giant Polymersome Protocells Dock with Virus Particle Mimics via Multivalent Glycan-Lectin Interactions>, HPLC of Formula: 71195-85-2, the main research area is giant polymersome virus particle glycan lectin.

Despite the low complexity of their components, several simple phys. systems, including microspheres, coacervate droplets and phospholipid membrane structures (liposomes), have been suggested as protocell models. These, however, lack key cellular characteristics, such as the ability to replicate or to dock with extracellular species. Here, we report a simple method for the de novo creation of synthetic cell mimics in the form of giant polymeric vesicles (polymersomes), which are capable of behavior approaching that of living cells. These polymersomes form by self-assembly, under electroformation conditions, of amphiphilic, glycosylated block copolymers in aqueous solution The glycosylated exterior of the resulting polymeric giant unilamellar vesicles (GUVs) allows their selective interaction with carbohydrate-binding receptor-functionalized particles, in a manner reminiscent of the cell-surface docking of virus particles. We believe that this is the first example of a simple protocell model displaying cell-like behavior through a native receptor-ligand interaction.

Scientific Reports published new progress about Amphipathicity. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, HPLC of Formula: 71195-85-2.

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

Daikos, Olesya; Naumov, Sergej; Knolle, Wolfgang; Heymann, Katja; Scherzer, Tom published the artcile< Peculiarities of the photoinitiator-free photopolymerization of pentabrominated and pentafluorinated aromatic acrylates and methacrylates>, Electric Literature of 71195-85-2, the main research area is photopolymerization pentabrominated pentafluorinated aromatic acrylate methacrylate.

Pentabrominated and fluorinated aromatic (meth)acrylates as well as their non-halogenated counterparts have been studied with the aim to avoid conventional photoinitiators and to overcome some neg. consequences related to their use. Therefore, RTIR spectroscopy, laser flash photolysis and GC/MS were utilized. Even low concentrations (1 to 5 wt%) of brominated (meth)acrylates in the model varnish lead to initiation of a photopolymerization reaction under exposure to UV light with �> 300 nm. This is due to the fact that excitation of the aryl moiety leads to the homolysis of bromine-Ph bonds with a high quantum yield of �.15-0.3. Both, bromine radicals released from either ortho, meta or para position as well as the corresponding tetrabromoaryl radicals, may initiate the polymerization of brominated aromatic (meth)acrylates. In contrast, fluorinated aromatic (meth)acrylates undergo �cleavage of the carboxyl group (as in the case of non-halogenated aromatic (meth)acrylates), if excitation of the acrylic double bonds is done with UV-C light (�< 280 nm). Radical formation occurs with a comparable quantum yield of 0.1-0.22 (fluorinated) and 0.16-0.36 (non-halogenated compounds), despite the different pathway of fragmentation. Thus, in all cases the efficiency of initiation is comparable to conventional photoinitiators. Quantum chem. calculations of orbitals involved and of the Gibbs free energy of transients and products support the suggested reaction pathway. Physical Chemistry Chemical Physics published new progress about Density functional theory, B3LYP. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Electric Literature of 71195-85-2.

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

Li, Cong; Feng, Shiyu; Li, Caicong; Sui, Yuan; Shen, Jinghui; Huang, Chongyu; Wu, Yonggang; Huang, Weiguo published the artcile< Synthesizing Organo/Hydrogel Hybrids with Diverse Programmable Patterns and Ultrafast Self-Actuating Ability via a Site-Specific ""In Situ"" Transformation Strategy>, Reference of 71195-85-2, the main research area is organo hydrogel hybrid diverse programmable ultrafast self actuating.

A simple yet robust strategy called “”‘in situ’ transformation”” is developed to prepare organo/hydro binary gels based on the aminolysis of poly(pentafluorophenyl acrylate) (pPFPA). Treated with desired hydrophilic, oleophilic alkylamines, and their mixtures, pPFPA-based organogels can be thoroughly transformed to targeted hydrogels, organogels, and even organohydrogels with outstanding mech. properties. Further, relying on programed aminolysis procedures, site-specific “”in situ”” transformation can be realized, giving rise to organo/hydro binary gels with diverse patterns and morphologies, such as macroscopic layered organo/hydrogel with a smooth-transitioned yet mech. robust interface, reconfigurable microscale organo/hydrogel hybrids with a high spatial-resolution pattern capable of reversibly transforming between 2D sheets and 3D helixes with controlled chirality in different solvents, and core-shell structured organo/hydrogel hybrids with readily adjustable core/shell dimensions, tunable internal stress, and transparency. Finally, an oscillator based on a bilayered organo/hydrogel hybrid is developed. Attributing to the synergistic effect of organogel expansion and hydrogel contraction, as well as the robust interfacial mech. properties, this oscillator is capable of ultrafast self-actuating through harvesting surrounding chem. and thermal energy. This work provides new design principles and highly efficient synthetic strategy for organo/hydro binary gels, and expands their potential applications in soft robotics.

Advanced Functional Materials published new progress about Acrylic polymers, fluorine-containing Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Reference of 71195-85-2.

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

Vakili, Mohammad; Cunningham, Victoria J.; Trebbin, Martin; Theato, Patrick published the artcile< Polymerization-Induced Thermal Self-Assembly of Functional and Thermo-Responsive Diblock Copolymer Nano-Objects via RAFT Aqueous Polymerization>, Product Details of C9H3F5O2, the main research area is polymerization induced self assembly diblock copolymer micellization.

The polymerization-induced self-assembly (PISA) of amphiphilic diblock copolymer nano-objects, which are synthesized via reversible addition-fragmentation chain-transfer (RAFT) aqueous polymerization, is discussed. First, the effectiveness of the (S)-2-(Et propionate)-(O-Et xanthate) as a RAFT chain transfer agent for the polymerization of N,N-dimethylacrylamide (DMAm) yielding a water-soluble macro RAFT agent is investigated. In a second step, poly(DMAm) macro-CTA is chain-extended with acrylate monomers in water inducing a PISA process. Besides the use of pentafluorophenyl acrylate (PFPA) as core-forming block, the thermo-responsive nature of N-isopropylacrylamide (NIPAm) and the reactive character of pentafluorophenyl acrylate (PFPA) for a subsequent post-modification is exploited. Monomer conversion and reaction kinetics are determined via NMR spectroscopy, while gel permeation chromatog. is used to evaluate the mol. weight distribution of the polymers. The obtained spherical nanostructures are analyzed via dynamic light scattering, SEM, transmission electron microscopy and at. force microscopy.

Macromolecular Chemistry and Physics published new progress about Emulsion polymerization. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Product Details of C9H3F5O2.

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

Hayward, Adam S.; Eissa, Ahmed M.; Maltman, Daniel J.; Sano, Naoko; Przyborski, Stefan A.; Cameron, Neil R. published the artcile< Galactose-Functionalized PolyHIPE Scaffolds for Use in Routine Three Dimensional Culture of Mammalian Hepatocytes>, COA of Formula: C9H3F5O2, the main research area is galactose polyHIPE scaffold mammal hepatocyte culture.

Three-dimensional (3D) cell culture is regarded as a more physiol. relevant method of growing cells in the laboratory compared to traditional monolayer cultures. Recently, the application of polystyrene-based scaffolds produced using polyHIPE technol. (porous polymers derived from high internal phase emulsions) for routine 3D cell culture applications has generated very promising results in terms of improved replication of native cellular function in the laboratory These materials, which are now available as com. scaffolds, are superior to many other 3D cell substrates due to their high porosity, controllable morphol., and suitable mech. strength. However, until now there have been no reports describing the surface-modification of these materials for enhanced cell adhesion and function. This study, therefore, describes the surface functionalization of these materials with galactose, a carbohydrate known to specifically bind to hepatocytes via the asialoglycoprotein receptor (ASGPR), to further improve hepatocyte adhesion and function when growing on the scaffold. We first modify a typical polystyrene-based polyHIPE to produce a cell culture scaffold carrying pendent activated-ester functionality. This was achieved via the incorporation of pentafluorophenyl acrylate (PFPA) into the initial styrene (STY) emulsion, which upon polymerization formed a polyHIPE with a porosity of 92% and an average void diameter of 33 渭m. Histol. anal. showed that this polyHIPE was a suitable 3D scaffold for hepatocyte cell culture. Galactose-functionalized scaffolds were then prepared by attaching 2′-aminoethyl-å°?d-galactopyranoside to this PFPA functionalized polyHIPE via displacement of the labile pentafluorophenyl group, to yield scaffolds with approx. ca. 7-9% surface carbohydrate. Experiments with primary rat hepatocytes showed that cellular albumin synthesis was greatly enhanced during the initial adhesion/settlement period of cells on the galactose-functionalized material, suggesting that the surface carbohydrates are accessible and selective to cells entering the scaffold. This porous polymer scaffold could, therefore, have important application as a 3D scaffold that offers enhanced hepatocyte adhesion and functionality.

Biomacromolecules published new progress about Animal tissue culture. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, COA of Formula: C9H3F5O2.

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

Xu, Zhongzheng; Li, Lin; Liu, Jiawei; Dai, Caili; Sun, Wen; Chen, Jia; Zhu, Zhixuan; Zhao, Mingwei; Zeng, Hongbo published the artcile< Mussel-inspired superhydrophilic membrane constructed on a hydrophilic polymer network for highly efficient oil/water separation>, COA of Formula: C9H3F5O2, the main research area is polydopamine superhydrophilic membrane oil water separation; Mussel-inspired materials; Oil/water separation; Polymer network; Superhydrophilic surface.

Superhydrophilic/underwater superoleophobic membrane constructed by hydrophilic polymers possesses great advantage in the separation of oily waste water, due to its intrinsic oil-repellent property. The formation of hydration layer to repel and block oil is considered as the mechanism of underwater superoleophobicity and subsequent oil/water separation Constructing a stable hydrophilic polymer network on the substrate surface would significantly improve the robustness of hydration layer. In this work, a feasible and universal mussel-inspired dip-coating method was developed for constructing stable hydrophilic polymer network onto target substrate surface, via successively immersing substrate membranes into aqueous solutions of polydopamine (PDA) and catechol-functionalized hydrophilic polymer (CFHP). After pre-wetting with water, the polymer network would swell with water to form a thin and stable water film layer, serving as a barrier against oil penetration. The as-prepared CFHP/PDA modified membranes exhibit outstanding performance in separating various oil/water mixtures and oil-in-water emulsions stabilized by surfactants, with separation flux up to 5641.1 L路m-2路h-1 and separation efficiency achieving 99.98%. The surface modification method developed in this work can be easily extended to various materials and membrane systems, for achieving a variety of practical applications such as industrial wastewater treatment.

Journal of Colloid and Interface Science published new progress about Contact angle (water). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, COA of Formula: C9H3F5O2.

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

Hoenders, Daniel; Tigges, Thomas; Walther, Andreas published the artcile< Combining the incompatible: Block copolymers consecutively displaying activated esters and amines and their use as protein-repellent surface modifiers with multivalent biorecognition>, Reference of 71195-85-2, the main research area is multivalent biorecognition block copolymer facile synthesis orthogonal functionalization.

We present the facile synthesis and orthogonal functionalization of diblock copolymers containing two mutually incompatible segments, i.e. primary amines and activated esters, that are displayed chronol. and synthesized by consecutive radical addition fragmentation transfer polymerization (RAFT) of suitably modified monomers. Post-polymerization modification of the active ester moieties with functionalized triethylene glycol derivatives (TEG-NH2/BiotinTEG-NH2) furnishes a protein-repellent block with specific biorecognition, and the activation of the amine groups via deprotection results in newly reactive primary amines. We subsequently use these amines as an anchoring layer for the coating of aldehyde-functionalized polystyrene (PS) colloids and demonstrate tight adhesion and enhanced protein-repellent characteristics combined with specific and multivalent biorecognition of avidin as a function of block ratios. Our strategy demonstrates a viable approach for orthogonal combination of widely needed, but mutually incompatible, functional groups into complex polymer architectures.

Polymer Chemistry published new progress about Avidins Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Reference of 71195-85-2.

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

Alex, Julien; Ulbrich, Jens; Rosales-Guzman, Miguel; Weber, Christine; Schubert, Ulrich S.; Guerrero-Sanchez, Carlos published the artcile< Kinetic investigations on homo- and co-polymerizations of pentafluorophenyl (meth)acrylates>, Safety of Perfluorophenyl acrylate, the main research area is kinetic homo copolymerization pentafluorophenyl methacrylate.

Pentafluorophenyl methacrylate (PFPMA) and pentafluorophenyl acrylate (PFPA) are frequently used monomers to produce advanced materials for biomedical applications via (co)polymerization reactions. This contribution reports kinetic investigations of the reversible addition fragmentation chain transfer (RAFT) copolymerization of PFPMA and Me methacrylate (MMA) mediated by a dithiobenzoate chain transfer agent (CTA) at 70掳C in DMF. Control with respect to the molar mass of the copolymers was observed for initial PFPMA monomer feeds éˆ?0 mol%. The rate of PFPMA incorporation decreased with increasing initial PFPMA feed ratios. Reactivity ratios were estimated with a nonlinear regression that utilizes a visualization of the sum of squares space method (rPFPMA = 1.06 and rMMA = 0.44). The slight preference for MMA-type radicals to add PFPMA monomers increased the rate of consumption of PFPMA especially in low initial PFPMA monomer feeds. In addition, kinetic investigations of the RAFT homopolymerization of PFPA revealed an induction period and poor control on the polymer molar mass in the polar solvents acetonitrile and DMF using a dithiobenzoate CTA. A better control using the same CTA was observed in 1,4-dioxane. Polymerizations carried out in the presence of a trithiocarbonate CTA were less affected by the solvent polarity and a good control on the polymer molar mass was achieved in acetonitrile and 1,4-dioxane even at high monomer conversion (>95%, dispersity value (ETH) éˆ?1.19).

European Polymer Journal published new progress about RAFT polymerization. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Safety of Perfluorophenyl acrylate.

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

Chen, Xiao Yun; Bohmann, Rebekka Anna; Wang, Long; Dong, Shunxi; Raeuber, Christoph; Bolm, Carsten published the artcile< Palladium/Copper-Cocatalyzed Oxidative Amidobrominations of Alkenes>, Safety of Perfluorophenyl acrylate, the main research area is sulfoxime vinyl preparation; acrylate sulfoximine oxidative amidobromination palladium copper cocatalysis; C鈥揅 bond formation; C鈥揘 bond formation; copper cocatalysis; dehydrogenative amidobromination; palladium catalysis.

In the presence of LiBr, a palladium/copper combination catalyzes dehydrogenative amidobrominations of acrylates with NH-sulfoximines, leading to N-vinylated products by dual NH/CH coupling, followed by oxidative enamide bromination. Mechanistically, the domino process is proposed to involve palladium(II) species as key intermediates. First synthetic applications of the products have been demonstrated.

Chemistry – A European Journal published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Safety of Perfluorophenyl acrylate.

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

Menyo, Mattew Stephen; Hawker, Craig J.; Waite, J. Herbert published the artcile< Synthesis and characterization of water-soluble polymers with pendant nitrocatecholic functionalities>, Recommanded Product: Perfluorophenyl acrylate, the main research area is fluoropolymer polyethylene graft nitrodopamine.

The catechol functionality has found widespread application in both natural and synthetic adhesive systems due to its strong, reversible, noncovalent binding to metal hydr(oxides) and metal ions, as well as oxidative chem. which can give rise to covalent crosslinking. While mussels and sandcastle worms are able to delay or benefit from the rapid autoxidation of catecholic Dopa to Dopaquinone which occurs at alk. pH, premature oxidation is a problem which plagues isolated marine adhesive proteins and synthetic catecholic constructs. Nitro-substituted catechol has been shown to maintain remarkable metal binding properties, and the substituted catechol is stabilized against oxidation by the inductive and resonance effects of the nitro group. Here, using activated ester chem., polymers with pendant nitrocatecholic functionalities have been synthesized and characterized.

PMSE Preprints published new progress about Fluoropolymers, polyoxyalkylene-, graft Role: SPN (Synthetic Preparation), PREP (Preparation). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Recommanded Product: Perfluorophenyl acrylate.

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