Tag: M.W=200-250

Das, Anindita; Lin, Shaojian; Theato, Patrick published the artcile< Supramolecularly Cross-Linked Nanogel by Merocyanine Pendent Copolymer>, Electric Literature of 71195-85-2, the main research area is supramolecularly crosslinked nanogel merocyanine pendent polyacrylic.

Directional dipole-dipole interaction mediated antiparallel dimerization of merocyanine dye (MD) has been explored for maneuvering supramol. assembly of MD-conjugated flexible macromols. leading to a cross-linked nanogel. The MD-functionalized copolymer was synthesized by a newly developed organocatalytic transesterification strategy for postpolymn. functionalization of poly(pentafluorophenyl acrylate) (polyPFPA)-based reactive copolymer. Presence of ∼35% pendant MD attached to a coil-like polymer chain leads to spontaneous formation of highly emitting crosslinked nanogel with efficient container property and appreciable stability in toluene owing to strong dimerization propensity among the MD. Considering the significance of MD in the context of nonlinear optics and photovoltaics, these results not only enrich the toolbox for engineering macromol. assembly, but also open up new possibilities for future organic materials.

ACS Macro Letters published new progress about Fluoropolymers Role: 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, Electric Literature of 71195-85-2.

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

Brooks, Karson; Razavi, Mir Jalil; White, Evan M.; Wang, Xianqiao; Locklin, Jason published the artcile< The formation and evolution of creased morphologies using reactive diffusion in ultrathin polymer brush platforms>, HPLC of Formula: 71195-85-2, the main research area is creasing ultrathin polymer brush modification reactive diffusion morphol.

Precisely controlling the morphol. in thin film coatings has emerged as an important tool used to tune surface properties in a wide variety of applications. Previously, a method is reported to fabricate nanoscale surface creases with a high degree of control over crease size and shape using microcontact printing to perform post-polymerization modification on reactive polymer brush surfaces. In this work, this approach has been expanded to manipulate crease morphol. in reactive thin films, using only a drop of a reactive, viscous polymer, and crease formation has been investigated with a combination of exptl. observations and computational validations. The effects of various rate constants of the reactive polymer brush scaffold, hydrostatic pressure within the droplet of reactive polymer, diffusion profile, and the evolution of the creased morphologies with reaction time are examined in order to better understand crease formation in ultrathin films.

Advanced Materials Interfaces published new progress about Contact angle. 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

Xue, Wenwen; Mutlu, Hatice; Theato, Patrick published the artcile< Post-polymerization modification of polymeric active esters towards TEMPO containing polymers: a systematic study>, Recommanded Product: Perfluorophenyl acrylate, the main research area is acrylic polymer radical functionalization secondary battery cathode.

Organic radical batteries (ORB) are a novel promising class for energy storage, particularly featuring a fast charging capability and extraordinary cycle life. The representative polymer, i.e. poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) (PTMA), is usually synthesized by a post-polymerization oxidation method. As an alternate strategy for developing TEMPO-containing polymers, we focused on the post-polymerization modification of poly(pentafluorophenyl acrylate) and poly(pentafluorophenyl methacrylate) with three different TEMPO nucleophiles by transesterification or amidation reactions. Optimizing the conditions of the post-polymerization functionalization reaction by varying different parameters, such as the type of nucleophile, catalyst and solvent, the feeding ratios of catalysts and nucleophiles, along with reaction time and temperatures, resulted in structurally distinct TEMPO containing polymers with varying backbone composition Intriguingly, poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl acrylamide) revealed the highest degree functionalization with TEMPO (96.2%) within 3 h. under considerably mild conditions, while poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methylmethacrylamide) exhibited the lowest TEMPO content owing to the steric hindrance from Me group on both the methacrylate chain and the TEMPO derivative All other four TEMPO containing polymers had a radical content similar to PTMA (66.6%) synthesized by the post-oxidation methodol. Noteworthy, compared to TEA (trimethylamine), DMAP (4-dimethylaminopyridine) facilitated an efficient ester bond cleavage independent of the polymer precursor, thus, side reactions such as hydrolysis were increased. Though hydrolysis side reaction occurred, the resulting carboxylic acid group was proven to accelerate ion transfer in a certain way during the redox process. Furthermore, due to the higher TEMPO content, poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl acrylamide) exhibited a 12-22 mAh/g higher specific capacity compared to the PTMA-oxidation when running at 5C for 500 cycles.

European Polymer Journal published new progress about Battery capacity. 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

Giuliani, Marta; Faroldi, Federica; Morelli, Laura; Torre, Enza; Lombardi, Grazia; Fallarini, Silvia; Sansone, Francesco; Compostella, Federica published the artcile< Exploring calixarene-based clusters for efficient functional presentation of Streptococcus pneumoniae saccharides>, Related Products of 34637-22-4, the main research area is glycocalixarene mannosamine conformational antigen vaccine; aminoglycoside calixarene cluster preparation Streptococcus pneumoniae capsular polysaccharide antibody; Calixarenes; Multivalent ligands; Saccharide antigens; Serotype 19F; Streptococcus pneumoniae.

Calixarenes are promising scaffolds for an efficient clustered exposition of multiple saccharide antigenic units. Herein we report the synthesis and biol. evaluation of a calix[6]arene functionalized with six copies of the trisaccharide repeating unit of Streptococcus pneumoniae (SP) serotype 19F. This system has demonstrated its ability to efficiently inhibit the binding between the native 19F capsular polysaccharide and anti-19F antibodies, despite a low number of exposed saccharide antigens, well mimicking the epitope presentations in the polysaccharide. The calix[6]arene mobile scaffold has been selected for functionalization with SP 19F repeating unit after a preliminary screening of four model glycocalixarenes, functionalized with N-acetyl mannosamine, and differing in the valency and/or conformational properties. This work is a step forward towards the development of new fully synthetic calixarenes comprising small carbohydrate antigens as potential carbohydrate-based vaccine scaffolds.

Bioorganic Chemistry published new progress about Streptococcus pneumoniae. 34637-22-4 belongs to class esters-buliding-blocks, and the molecular formula is C11H15NO3, Related Products of 34637-22-4.

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

Suga, Takeo; Aoki, Kohei; Yashiro, Toshiaki; Nishide, Hiroyuki published the artcile< ""Click"" Incorporation of Radical/Ionic Sites into a Reactive Block Copolymer: A Facile and On-Demand Domain Functionalization Approach toward Organic Resistive Memory>, Product Details of C9H3F5O2, the main research area is Click amidation radical ionic reactive block copolymer resistive memory; charge-transport; ionic polymer; nitroxide radical; organic electronics; postpolymerization modification.

Reversible addition-fragmentation chain transfer polymerization yields reactive block copolymers bearing the pentafluorophenyl ester (PFPA) group, and subsequent Click amidation using 2,2,6,6-tetramethylpiperidine-N-oxyl- and imidazolium-functionalized primary amines produces the corresponding functional block copolymers, leading to installation of statistical radical- and ionic sites into the PFPA segment. The monolayered thin film devices fabricated using the obtained block copolymers exhibit repeatable switching of elec. conductivity (on/off ratio > 103) under a bias voltage, which reveals that the coexistence of radicals and ions in the same spherical domain of the copolymer layer is a prerequisite for repeatable switching memory.

Macromolecular Rapid Communications published new progress about Amidation. 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

Ruan, Bankang; Zhang, Zhiyan; Huang, Lei; Xu, Chao; Li, Luolan published the artcile< Microwave-assisted synthesis of 2-aminothiophene derivatives via improved gewald reactions>, HPLC of Formula: 65416-85-5, the main research area is ethanal oxopropanenitrile sulfur microwave irradiation Gewald reaction; amino thiophene preparation.

In this paper, a new and efficient method was developed to prepare 2-aminothiophene derivatives through improved Gewald reaction. Thirty-one final products were synthesized under microwave radiation for 30 min with 57%-95% isolated yields. All the products could be used as building blocks in drug discovery.

Heterocycles published new progress about Carbonyl compounds (organic) Role: RCT (Reactant), RACT (Reactant or Reagent). 65416-85-5 belongs to class esters-buliding-blocks, and the molecular formula is C10H15NO2S, HPLC of Formula: 65416-85-5.

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

Han, Kang; Tiwari, Rahul; Heuser, Thomas; Walther, Andreas published the artcile< Simple Platform Method for the Synthesis of Densely Functionalized Microgels by Modification of Active Ester Latex Particles>, Recommanded Product: Perfluorophenyl acrylate, the main research area is amide functionalized pentafluorophenyl acrylate copolymer latex microgel swelling; click chemistry; colloids; microgels; responsive materials.

This study reports a simple and versatile synthesis route for the preparation of highly uniform and densely functionalized aqueous microgels by modification of latex particles composed of an active ester monomer (pentafluorophenyl acrylate; PFPA). The hydrophobic nature of the PFPA allows synthesizing very uniform latex particles via emulsion polymerization, whose size can be controlled by the surfactant concentration, while the degree of crosslinking is a function of the added crosslinker. The high reactivity of the PFPA groups toward nucleophilic substitution delivers a platform method to synthesize functional microgels by reaction with functional amines. This study demonstrates this process for the dense functionalization of the entire particle with an amine carrying a pH-responsive unit. This study further describes the influence of the crosslinking degree on the ability for swelling of the resulting microgels in aqueous dispersion.

Macromolecular Rapid Communications published new progress about Crosslink density. 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

Zhuang, Jiaming; Jiwpanich, Siriporn; Deepak, V. D.; Thayumanavan, S. published the artcile< Facile Preparation of Nanogels Using Activated Ester Containing Polymers>, Application of C9H3F5O2, the main research area is pentafluorophenyl acrylate polyethylene glycol methacrylate diamine crosslinker nanogel; Activated ester; Amphiphilic polymer assembly; Nanogel synthesis; Surface modification.

A facile methodol. to prepare water-dispersible nanogels based on pentafluorophenyl acrylate and polyethylene glycol methacrylate random copolymer and diamine cross-linkers has been developed. The crosslinking reaction was characterized by FTIR and 19F NMR. We show that those nanogels are (i) water-dispersible; (ii) can conveniently encapsulate lipophilic guest mols.; (iii) can be prepared with different nanosizes; and (iv) are engineered to allow for surface decoration with addnl. functional groups.

ACS Macro Letters published new progress about Encapsulants. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Application of C9H3F5O2.

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

Langford, Caitlin R.; Johnson, David W.; Cameron, Neil R. published the artcile< Preparation of Hybrid Thiol-Acrylate Emulsion-Templated Porous Polymers by Interfacial Copolymerization of High Internal Phase Emulsions>, HPLC of Formula: 71195-85-2, the main research area is thiol acrylate emulsion templated porous polymer interfacial copolymerization; biomaterials; copolymerization; foams; macroporous polymers; photopolymerization.

Emulsion-templated highly porous polymers (polyHIPEs), containing distinct regions differing in composition, morphol., and/or properties, are prepared by the simultaneous polymerization of two high internal phase emulsions (HIPEs) contained within the same mold. The HIPEs are placed together in the mold and subjected to thiol-acrylate photopolymerization The resulting polyHIPE material is found to contain two distinct semicircular regions, reflecting the composition of each HIPE. The original interface between the two emulsions becomes a copolymerized band between 100 and 300 μm wide, which is found to be mech. robust. The sep. polyHIPE layers are distinguished from one another by their differing average void diameter, chem. composition, and extent of contraction upon drying.

Macromolecular Rapid Communications published new progress about Click chemistry. 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

Naddaka, Maria; Asen, Florian; Freza, Sylwia; Bobrowski, Maciej; Skurski, Piotr; Laux, Edith; Charmet, Jerome; Keppner, Herbert; Bauer, Monika; Lellouche, Jean-Paul published the artcile< Functionalization of parylene during its chemical vapor deposition>, COA of Formula: C9H3F5O2, the main research area is functionalization parylene chem vapor deposition.

Two possible mechanisms for the reaction of four halogenated (metha)acrylate-based mols. with Parylene [poly (paraxylylene)] during its chem. vapor deposition were proposed. The chem. reactivity of acrylate double bond with the paraxylylene biradical was calculated for all four (metha)acrylate-based mols. These calculations allowed the evaluation of the energetically favorable mechanism and indeed a direct correlation was found between both predicted and exptl. reactivities. Next, the reactivity of the (metha)acrylate-modified Parylene films was evaluated through their reaction with different amines. The obtained amidated Parylene films were characterized with XPS, Kaiser test for primary amines, and fluorescence microscopy. The strong reactivity of (metha)acrylate-modified Parylene films toward nucleophilic substitution emphasizes a general method for the functionalization of self-supported Parylene films grown on the reacting solutions using the novel solid on liquid deposition process. This paves the way to the development of multifunctional materials in a one-step process resulting from the deposition Parylene over liquid patterns. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Blood serum albumins Role: RCT (Reactant), RACT (Reactant or Reagent) (bovine). 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