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Protoenzymes: The Case of Hyperbranched Polymer-Scaffolded ZnS Nanocrystals [PDF]

open access: yesLife, 2020
Enzymes are biological catalysts that are comprised of small-molecule, metal, or cluster catalysts augmented by biopolymeric scaffolds. It is conceivable that early in chemical evolution, ancestral enzymes opted for simpler, easier to assemble scaffolds.
Irena Mamajanov   +2 more
doaj   +4 more sources

Syntheses of a Hyperbranched Polymer and Its Performance on Enhanced Oil Recovery [PDF]

open access: yesFrontiers in Chemistry, 2021
A hyperbranched carboxylate-type polymer was synthesized through esterification and carboxymethylation, and its performance on enhanced oil recovery was experimentally evaluated. The optimum condition for esterification was 8 h at 120°C, where 3% PTSA as
Sanyuan Qiao   +3 more
doaj   +2 more sources

Hyperbranched polymer functionalized flexible perovskite solar cells with mechanical robustness and reduced lead leakage [PDF]

open access: yesNature Communications, 2023
Perovskite solar cells (PSCs) are multilayer structures. The interface between electron transport layer and perovskite is the mechanical weakest point in flexible PSCs due to its low fracture energy.
Zhihao Li   +9 more
doaj   +2 more sources

Preparation and Self-Assembly of pH-Responsive Hyperbranched Polymer Peptide Hybrid Materials [PDF]

open access: yesNanomaterials, 2023
In recent years, the coupling of structurally and functionally controllable polymers with biologically active peptide materials to obtain polymer-peptide hybrids with excellent properties and biocompatibility has led to important research progress in the
Yan Qin, Jianguo Yi, Yue Zhang
doaj   +2 more sources

Grafting of a novel hyperbranched polymer onto carbon fiber for interfacial enhancement of carbon fiber reinforced epoxy composites

open access: yesMaterials & Design, 2021
A novel hyperbranched 2,2-bis-(hydroxymethyl) propionic acid polyester-32-hydroxyl (hyperbranched polymer) was selected to graft onto a carbon fiber (CF) surface to enhance the interfacial properties of carbon fiber/epoxy composites.
Lina Yang, Ping Han, Zheng Gu
doaj   +3 more sources

Hyperbranched polymer surfactant: synthesis, characterization and surface tension activity

open access: yesJournal of Leather Science and Engineering, 2021
A series of hyperbranched polymer surfactants (HBP-C8, HBP-C12 and HBP-C16) were synthesized by the reaction between hydroxyl-terminated hyperbranched polymers (HBP) and fatty acyl chloride.
Longfang Ren   +3 more
doaj   +2 more sources

Holographic hyperbranched polymer nanocomposite grating with exceptionally large neutron scattering length density modulation amplitudes [PDF]

open access: yesScientific Reports
Nanoparticle–polymer composite gratings incorporating ultrahigh-refractive-index hyperbranched polymers as organic nanoparticles have demonstrated exceptional light optical properties, yet their potential for neutron diffraction applications remains ...
Elhoucine Hadden   +8 more
doaj   +2 more sources

Hyperbranched dielectric polymer networks exhibiting giant energy storage density at 250 °C [PDF]

open access: yesNature Communications
Harsh-environment requirements of electrical and electronic systems demand advanced dielectrics with high energy storage density at elevated temperatures.
Zhaoyu Ran   +7 more
doaj   +2 more sources

Synthesis of Lignin-based Phenol Terminated Hyperbranched Polymer [PDF]

open access: yesMolecules, 2019
In this work, we proved the efficient synthesis of a bio-based hyper-branched polyphenol from a modified lignin degradation fragment. Protocatechuic acid was readily obtained from vanillin, a lignin degradation product, via alkaline conditions, and ...
Lionel Longe, Gil Garnier, Kei Saito
doaj   +2 more sources

Synthesis of Magnetic Hyperbranched Star Chain Nanopolymer and Its Application in ASP Flooding Wastewater Treatment [PDF]

open access: yesMolecules
ASP flooding wastewater contains crude oil, suspended solids, anionic polymers and surfactants, with high viscosity, high zeta potential, difficult demulsification, flocculation and slow separation and sedimentation.
Sanyuan Qiao   +3 more
doaj   +2 more sources

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