Tag: M.W=200-250

Beija, Mariana; Li, Yang; Lowe, Andrew B.; Davis, Thomas P.; Boyer, Cyrille published the artcile< Factors influencing the synthesis and the post-modification of PEGylated pentafluorophenyl acrylate containing copolymers>, Safety of Perfluorophenyl acrylate, the main research area is PEGylated pentafluorophenyl acrylate copolymer RAFT polymerization reaction condition influence.

Copolymerization reactions involving oligoethylene glycol acrylate (OEGA) or diethylene glycol acrylate (DEGA) with pentafluorophenyl acrylate (PFPA) were performed by reversible addition fragmentation transfer (RAFT) polymerization The effect of the reaction conditions on the nucleophilic acyl substitution reactions of PFPA was studied using a model amine (furfuryl amine). The resulting PEG/PFP functional copolymers were then used as scaffolds to produce a library of polymers by reaction with a range of amines.

European Polymer Journal published new progress about Amines 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

Li, Lin; Xu, Zhongzheng; Sun, Wen; Chen, Jia; Dai, Caili; Yan, Bin; Zeng, Hongbo published the artcile< Bio-inspired membrane with adaptable wettability for smart oil/water separation>, Formula: C9H3F5O2, the main research area is bio inspired membrane adaptable wettability separation.

Adaptable wettability is an intriguing property found in nature yet rare in synthetic materials. Separation membranes bearing this adaptable wettability would be of great significance for practical applications because they can achieve on-demand oil/water separation according to the intrinsic properties of the targeting oil/water mixtures other than external stimuli. Herein, we report one novel type of such smart separation membranes by functionalizing steel mesh membrane with polydopamine (PDA) and an amphiphilic synthetic copolymer via a feasible mussel-inspired dip-coating method. The resulting membrane possesses excellent adaptable wettability and can switch their special oil/water wettability to selectively activate “”water-removing”” or “”oil-removing”” modes for on-demand collection of the desired component (water or oil) from the oily water, i.e., upon pre-wetting the surfaces with water or oil. It exhibits outstanding performance in separating various immiscible oil/water mixtures and miscible surfactant-stabilized emulsions under ambient pressure. Moreover, the bio-inspired membrane can be regenerated and reused facilely through simple washing and drying process without loss in performance. The facile surface functionalization approach developed in this work is universal and substrate-independent, which can be extended to a variety of materials and membrane systems. Such universal surface modification method and the novel membrane developed have great application potential in various engineering and environmental areas including oil spill cleanup and industrial wastewater treatment.

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

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

Wang, Chaoyu; Bei, Wenfeng; Li, Wanting; Wang, Dongwei; Liu, Yuqin; Gong, Zile; Zeng, Kailin; Feng, Ruokun; Huang, Xianqiang; Qi, Chenze published the artcile< Cobalt-catalyzed O-arylation of N-protected amino alcohols with arenes via cross-dehydrogenative C-O coupling strategy: Direct access to aryloxyamines>, Category: esters-buliding-blocks, the main research area is amino alc aromatic amide cobalt catalyst cross dehydrogenative coupling; aryloxyamine regioselective preparation.

An efficient Co(II)-catalyzed cross-dehydrogenative C-O coupling strategy for the arylation of N-protected amino alcs., including 1,2-, 1,3- and 1,4-amino alcs., branched amino alcs. and cyclic amino alcs. with different amides derivatives was developed, affording a wide range of corresponding aryloxyamines compounds with excellent convertibility in moderate to good yields, which are of great interest in medicinal and pharmaceutical chem. Furthermore, this reaction system could be further applied to the preparation of potential bioactive mols.

Tetrahedron Letters published new progress about Amino alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 34637-22-4 belongs to class esters-buliding-blocks, and the molecular formula is C11H15NO3, Category: esters-buliding-blocks.

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

zur Borg, Lisa; Domanski, Anna L.; Breivogel, Aaron; Buerger, Mareike; Berger, Ruediger; Heinze, Katja; Zentel, Rudolf published the artcile< Light-induced charge separation in a donor-chromophore-acceptor nanocomposite poly[TPA-Ru(tpy)2]@ZnO>, SDS of cas: 71195-85-2, the main research area is polyvinyltriphenylamine terpyridine ruthenium complex zinc oxide.

The synthesis and characterization of a new donor-chromophore-acceptor system based on poly(vinyltriphenylamine) as the electron donor and a glycine-functionalized bis(2,2′;6′,2”-terpyridine)ruthenium(II) complex acting both as a chromophore and as an anchor group attached to ZnO nanorods as the electron acceptor are described. The TPA-containing block copolymer was synthesized by Reversible Addition Fragmentation Chain Transfer (RAFT) polymerization and the ruthenium complex glycine conjugates prepared by Solid Phase Peptide Synthesis (SPPS) were attached via post-polymerization esterification. GPC, NMR, IR and UV-Visible spectroscopy were used to characterize the multifunctional chromophore-donor polymer. Zinc oxide nanorods were functionalised with the block copolymer by multisite adsorption via the glycine COOH groups. The functionalised nanoparticles were well dispersible in organic solvents. Photoluminescence studies showed a complete quenching of the phosphorescence of the ruthenium chromophore (3MLCT state). Kelvin probe force microscopy (KPFM) was used to confirm that under continuous excitation of the RuII complex (1MLCT) the polymer corona develops a pos. charge and thus efficient charge separation between ZnO and the polymer is achieved.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about Electron transfer (charge separation). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, SDS of cas: 71195-85-2.

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

Huang, Jun; Qiu, Xiaoyong; Yan, Bin; Xie, Lei; Yang, Jingqi; Xu, Haolan; Deng, Yonghong; Chen, Lingyun; Wang, Xiaogang; Zeng, Hongbo published the artcile< Robust polymer nanofilms with bioengineering and environmental applications via facile and highly efficient covalent layer-by-layer assembly>, Synthetic Route of 71195-85-2, the main research area is polymer nanofilm bioengineering cell adhesion surface hydrophobicity.

This work reports novel, robust, multifunctional covalent-bonded polymer nanofilms based on highly efficient spin-assisted layer-by-layer (LbL) assembly, with a wide range of engineering and bioengineering applications. An active-ester block copolymer, polypentafluorophenylacrylate-block-polystyrene (PPFPA-b-PS), and an amine-rich polymer, branched polyethyleneimine (PEI), were chosen as model polymers. The as-prepared nanofilms show switchable hydrophobicity with controllable thickness. Nanomech. tests demonstrate that the surface adhesion between the PPFPA-b-PS and PEI layers facilitates excellent film stability under different solvent conditions. Robust and centimeter-scale freestanding nanofilms with good transparency and excellent flexibility could be readily obtained by peeling the films from their silicon substrates without using a sacrifice layer. More importantly, the multi-layer nanofilms containing free pentafluorophenol groups or amine groups can be readily functionalized further to tailor the properties of the films for various applications. As a proof of concept, a multi-layer nanofilm with free ester groups was modified with rhodamine-6G hydrazone and tested as a H+ sensor. The free amine groups in the polymer nanofilms show strong interactions with perfluorooctanoic acid for achieving high surface hydrophobicity. The polymer nanofilms also show exceptional tunable cell-attachment behavior by switching the outmost layer between PPFPA-b-PS and PEI, demonstrating great potential for biomedical applications.

Journal of Materials Chemistry B: Materials for Biology and Medicine published new progress about Adhesion, physical (surface). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Synthetic Route of 71195-85-2.

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

Durie, Karson; Yatvin, Jeremy; McNitt, Christopher D.; Reese, R. Alexander; Jung, Calvin; Popik, Vladimir V.; Locklin, Jason published the artcile< Multifunctional Surface Manipulation Using Orthogonal Click Chemistry>, COA of Formula: C9H3F5O2, the main research area is reactive surface morphol polypentafluorophenyl acrylate brush click aminolysis.

Polymer brushes are excellent substrates for the covalent immobilization of a wide variety of mols. due to their unique physicochem. properties and high functional group d. By using reactive microcapillary printing, poly(pentafluorophenyl acrylate) brushes with rapid kinetic rates toward aminolysis can be partially patterned with other click functionalities such as strained cyclooctyne derivatives and sulfonyl fluorides. This trireactive surface can then react locally and selectively in a one pot reaction via three orthogonal chemistries at room temperature: activated ester aminolysis, strain promoted azide-alkyne cycloaddition, and sulfur(VI) fluoride exchange, all of which are tolerant of ambient moisture and oxygen. Furthermore, we demonstrate that these reactions can also be used to create areas of morphol. distinct surface features on the nanoscale, by inducing buckling instabilities in the films and the grafting of nanoparticles. This approach is modular, and allows for the development of highly complex surface motifs patterned with different chem. and morphol.

Langmuir published new progress about 1,3-Dipolar cycloaddition reaction. 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

Chang, Chun-Wei; Wu, Chia-Hui; Lin, Mei-Huei; Liao, Pin-Hsuan; Chang, Chun-Chi; Chuang, Hsiao-Han; Lin, Su-Ching; Lam, Sarah; Verma, Ved Prakash; Hsu, Chao-Ping; Wang, Cheng-Chung published the artcile< Establishment of Guidelines for the Control of Glycosylation Reactions and Intermediates by Quantitative Assessment of Reactivity>, Electric Literature of 34637-22-4, the main research area is predicted stereocontrolled glycosylation relative reactivity thioglycoside; carbohydrates; diastereoselectivity; glycosylation.

Stereocontrolled chem. glycosylation remains a major challenge despite vast efforts reported over many decades and so far still mainly relies on trial and error. Now it is shown that the relative reactivity value (RRV) of thioglycosides is an indicator for revealing stereoselectivities according to four types of acceptors. Mechanistic studies show that the reaction is dominated by two distinct intermediates: glycosyl triflates and glycosyl halides from N-halosuccinimide (NXS)/TfOH. The formation of glycosyl halide is highly correlated with the production of α-glycoside. These findings enable glycosylation reactions to be foreseen by using RRVs as an α/β-selectivity indicator and guidelines and rules to be developed for stereocontrolled glycosylation.

Angewandte Chemie, International Edition published new progress about Diastereoselective synthesis. 34637-22-4 belongs to class esters-buliding-blocks, and the molecular formula is C11H15NO3, Electric Literature of 34637-22-4.

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

Lin, Shaojian; Das, Anindita; Theato, Patrick published the artcile< CO2-Responsive graft copolymers: synthesis and characterization>, Recommanded Product: Perfluorophenyl acrylate, the main research area is carbon dioxide responsive amphiphilic acrylic graft copolymer; active ester grafting amphiphilic copolymer self assembly.

A facile and versatile approach for preparing CO2-responsive graft copolymers via a grafting-to strategy that combines controlled radical polymerization with post-polymerization modification has been demonstrated. A well-defined poly(N,N-dimethylacrylamide-co-pentafluorophenyl acrylate) (P(DMA-co-PFPA)) was synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization bearing reactive pentafluorophenyl esters as grafting sites on a hydrophilic backbone. Then, amino end-functionalized poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) known for its CO2 responsiveness and hydrophobic poly(Me methacrylate) (PMMA) were prepared via atom transfer radical polymerization (ATRP) as side blocks, resp. The post-polymerization modification via active-ester amine chem. resulted in CO2-responsive graft copolymers with either homo-side chains or discrete multi-functional hetero side chains. The grafting-to strategy utilizing active-ester amine chem. appeared to be a facile and efficient method to fabricate graft copolymers. Both prepared CO2-responsive graft copolymers – due to their amphiphilic nature – could self-assemble into vesicles in aqueous solution and displayed CO2-responsive expansion owing to the protonation of tertiary amine groups of PDEAEMA side chains under CO2 stimulation.

Polymer Chemistry published new progress about Acrylic polymers, fluorine-containing 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, Recommanded Product: Perfluorophenyl acrylate.

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

Ludwanowski, Simon; Skarsetz, Oliver; Creusen, Guido; Hoenders, Daniel; Straub, Paula; Walther, Andreas published the artcile< Wavelength-Gated Adaptation of Hydrogel Properties via Photo-Dynamic Multivalency in Associative Star Polymers>, Quality Control of 71195-85-2, the main research area is hydrogel photo multivalency associative star polymer; Arylazopyrazole; Hydrogels; Photoresponsive Systems; Photoswitch; Wavelength-Gated Engineering.

Responsive materials, such as switchable hydrogels, have been largely engineered for maximum changes between two states. In contrast, adaptive systems target distinct functional plateaus between these maxima. Here, we demonstrate how the photostationary state (PSS) of an E/Z-arylazopyrazole photoswitch can be tuned by the incident wavelength across a wide color spectrum, and how this behavior can be exploited to engineer the photo-dynamic mech. properties of hydrogels based on multivalent photoswitchable interactions. We show that these hydrogels adapt to the wavelength-dependent PSS and the number of arylazopyrazole units by programmable relationships. Hence, our material design enables the facile adjustment of the mech. properties without laborious synthetic efforts. The concept goes beyond the classical switching from state A to B, and demonstrates pathways for a truly wavelength-gated adaptation of hydrogel properties potentially useful to engineer cell fate or in soft robotics.

Angewandte Chemie, International Edition published new progress about Branched polymers, star-branched Role: PRP (Properties). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Quality Control of 71195-85-2.

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

Ding, Lan; Zhou, Shixin; Li, Dahua; Wu, Chengfeng; Xing, Yuzhi; Song, Bo published the artcile< A facile method to incorporate tetraphenylethylene into polymeric amphiphiles: High emissive nanoparticles for cell-imaging>, Reference of 71195-85-2, the main research area is amphiphile polymer nanoparticle fluorescent probe cell imaging.

Encapsulating fluorogens into polymeric nanoparticles is proven an effective method to shield the fluorogens from the outer environment and improve the biocompatibility as well. Conventionally, the fluorogens are firstly conjugated to the monomers and then polymerized into macromols., where tedious mol. design and synthesis was unavoidable. Herein, we present a facile method to prepare the fluorogen-functionalized polymer, and then use the polymer as build blocks to fabricate nano-probes aiming at cell-imaging. Unlike the conventional ways, we prepared a homopolymer with active esters on the repeating units and used the polymer as matrix to graft fluorogens and hydrophilic groups. Note that the fluorogen and hydrophilic groups selected in our study were tetraphenylethylene (TPE) and polyethylene glycol (PEG), resp. The resulting amphiphilic random copolymer self-assembled into spherical nanoparticles with size around 225 nm in aqueous solution With comparable amount of TPE moieties, the polymeric nanoparticles demonstrated much stronger emission than the nanoparticles formed by small mols. of TPE derivatives The polymeric nanoparticles showed very good stability and biocompatibility, and were employed to label Hela cells and gave high-contrast fluorescent images. We anticipate that the methodol. presented in this study might be developed into a general avenue to encapsulating fluorogens into nanoparticles.

Dyes and Pigments published new progress about Amphiphiles. 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