Results 11 to 20 of about 20,827,591 (99)

Synthesis and Self-Assembly of Poly(4-acetoxystyrene) Cubosomes. [PDF]

Macromol Rapid Commun
Polymer cubosomes of poly(4‐acetoxystyrene) is realized by RAFT polymerization and subsequent self‐assembly in water. By adjusting the solvent conditions, the same polymer could be directed into polymersomes, cubosomes or hexosomes. The study provides new insights into the formation of polymer cubosomes using functional wall chemistries.
Schumacher M, Foith M, Trömer M, Tänzer N, Rosenfeldt S, Retsch M, Gröschel AH.   +6 more
europepmc   +3 more sources

Absorption-coefficient calculation of short-wavelength photoresist materials: From EUV to BEUV and water window X-ray. [PDF]

Smart Mol
In photolithography, shortening the exposure wavelength from ultraviolet to extreme ultraviolet (EUV, 13.5 nm) and soft X‐ray region in terms of beyond EUV (BEUV, 6.X nm) and water window X‐ray (WWX, 2.2–4.4 nm) is expected to further miniaturize the technology node down to sub‐5 nm level.
Peng Y, Chen P, Chen H, Si Y, Peng X.
europepmc   +2 more sources

Photocatalysis Enables Chemodivergent Radical Polar Crossover: Ritter-Type Amidation vs Heck-Type Olefin Carbofunctionalizations. [PDF]

Chemistry
One aryl makes the difference: switching styrenes with 1,1‐diaryl olefins as radical acceptors, the benzylic cation intermediate fate changes from Ritter‐type carboamidation to Heck‐type reaction. The decarboxylative photocatalytic chemodivergent methodology enabled broad scope and efficient scalability in both batch and flow.
Lepori M, Pratley C, Dey I, Butera V, Roider V, Barham JP.   +5 more
europepmc   +2 more sources

Atomic Scale Engineering of Multivalence-State Palladium Photocatalyst for Transfer Hydrogenation with Water as a Proton Source. [PDF]

Adv Mater
Photocatalytic transfer hydrogenation is achieved over a multivalence‐state palladium photocatalyst, in which protons generated from photocatalytic water splitting are added to unsaturated double bonds. The operando light‐induced Electron Paramagnetic Resonance (EPR) spectroscopy confirms the synergistic action between Pd single atoms and nanoparticles,
Zhao E, Kong W, Zoppellaro G, Yang Y, Nan B, Li L, Zhang W, Chen Z, Bakandritsos A, Wang ZJ, Beller M, Zbořil R, Chen Z.   +12 more
europepmc   +2 more sources

Blue‐Light Driven Iron‐Catalyzed Oxy‐phosphinylation of Activated Alkenes for β‐Ketophosphine Oxide Synthesis

Chemistry – A European Journal, Volume 29, Issue 69, December 11, 2023., 2023
A blue light driven iron‐catalyzed oxy‐phosphinylation of activated alkenes with secondary phosphine oxides under air at room temperature led to β‐ketophosphine oxides in 43–97 % isolated yields. The proposed mechanism involved a blue light promoted aerobic process catalyzed by iron which generated a phosphorus radical from the starting secondary ...
Yumeng Yuan, Qiufeng Huang, Christophe Darcel   +2 more
wiley   +1 more source

Architectural control of polystyrene physical properties using branched anionic polymerization initiated at ambient temperature

Journal of Polymer Science, Volume 58, Issue 10, Page 1426-1438, May 15, 2020., 2020
Ambient temperature‐initiated anionic polymerization of styrene has been used to generate polymers of varying molecular weights and architectures. The branched polystyrenes did not show a conventional Tg versus molecular weight relationship and analyses have shown a strong correlation to the degree of polymerization of the component chains and position
Tamara Alhilfi, Pierre Chambon, Steve P. Rannard   +2 more
wiley   +1 more source

Synthesis of Narrow Molecular Weight Distribution Norbornene-Lactone Functionalized Polymers by Nitroxide-Mediated Polymerization: Candidates for 193-nm Photoresist Materials

, 2014
One hundred ninety three-nanometer candidate photoresist materials were synthesized by nitroxide-mediated polymerization (NMP). Statistical copolymerizations of 5-methacryloyloxy-2,6-norboranecarbolactone (NLAM) with 5–10 mol% of controlling co-monomers (
Zi Jun Wang, M. Maríc
semanticscholar   +1 more source

Ambient Hydrocarbonylation of Olefins Enabled by Visible‐Light

Advanced Science, EarlyView.
A novel photo‐induced methodology for hydrocarbonylation has been established, resolving the inherent conflicts between competitive olefin and CO insertion in traditional methods that necessitate harsh conditions. Accordingly, an efficient and versatile hydrocarbonylation of olefins enabled by visible‐light irradiation under ambient conditions has been
Hongchi Liu, Tianze Zhang, Hanmin Huang
wiley   +1 more source

Improved high‐temperature electrical properties of polypropylene insulation material by grafting styrene

High Voltage, Volume 10, Issue 3, Page 603-614, June 2025.
Abstract The electrical properties of polypropylene (PP) insulation material decrease dramatically at high temperature, which limits its application in harsh environments. This study investigates how grafting styrene (St) improves the high‐temperature electrical properties of PP.
Xinhua Dong, Qing Shao, Yuanbo Cai, Qi Zhang, Wenjia Zhang, Shixun Hu, Shangshi Huang, Wei Wang, Qi Li, Jinliang He   +9 more
wiley   +1 more source

Synthesis of 4-acetoxystyrene – t-butyl acrylate statistical, block and gradient copolymers, and the effect of the structure of copolymers on their properties

, 2020
The properties of copolymers are affected greatly by the composition as well as the chain structure of the copolymers. Consequently, gradient copolymers, due to the uniqueness of their structures show significantly different properties than those of the ...
M. Alam, Hui Peng, K. Jack, D. Hill, A. Whittaker   +4 more
semanticscholar   +1 more source