Results 131 to 140 of about 50,243 (307)

Polymerization of ethylene to branched poly(ethylene)s using ansa-η⁵-monofluorenyl cyclohexanolato zirconium(IV) complex/methylaluminoxane

, 2010
ansa-η5-Monofluorenyl cyclohexanolato zirconium complex 3 was shown to be active for the polymerization of ethylene when activated with methylaluminoxane (MAO) at 5 bar. Up to a polymerization temperature of 40 °C, 3/MAO resulted in linear poly(
Rajesh, A., A. Rajesh, S. Sivaram, Sivaram, S.   +3 more
core   +1 more source

Microengineered Gradient Hydrogels for Mechanobiology

Advanced Healthcare Materials, EarlyView.
Gradient hydrogels are used to mimic the mechanical heterogeneity in native tissues, offering powerful in vitro platforms to study cell‐material interactions in diverse pathophysiological contexts. Here, we present a comprehensive review of the design and experimental considerations for stiffness gradient hydrogels, discussing exemplary achievements ...
Shin Wei Chong, Deepu Ashok, Anna Waterhouse, Marcela M. M. Bilek, Daniele Vigolo   +4 more
wiley   +1 more source

ETHYLENE POLYMERIZATION WITH NICKEL DIIMINE COMPLEXES CONTAINING PSEUDOHALIDES

Química Nova
Nickel-diimine complexes DADNiX2 (DAD= 2,6-iPr2-C6H3-N=C(Me)-C(Me)=N-2,6-iPr2-C6H3) containing the non-chelating pseudo-halide ligands isothyocyanate and isoseleniumcyanate (X= NCS 1 and NCSe 2) were synthesized and used in ethylene polymerization ...
Marcos L. Dias, Luciana P. Silva, Geraldo L. Crossetti, Carlos A. L. Filgueiras   +3 more
doaj   +1 more source

Enhancing Ethylene Polymerization of NNN-Cobalt(II) Precatalysts Adorned with a Fluoro-substituent. [PDF]

ACS Omega, 2021
Bariashir C, Zhang R, Vignesh A, Ma Y, Liang T, Sun WH.   +5 more
europepmc   +1 more source

Copper(II) Ethylene Polymerization Catalysts: Do They Really Exist?

, 2016
The reactions of two types of copper(II) ethylene polymerization catalysts, [(sal)CuCl]2 (sal = 2-{C(H)N(2,6-iPr2-C6H3)}-4,6-tBu2-phenoxide) and (α-diimine)CuCl2 (α-diimine = [(2,6-iPr2-C6H3)NC(Me)]2), with methylaluminoxane (MAO) and trimethylaluminum
Stephen R. Foley (2412754), Ramon Boyd (2412757), Jeremy A. Olson (2182224), J. Wilson Quail (1670191)   +3 more
core   +1 more source

Epidermal Patch Technologies for Integrated Healthcare and Infection Management

Advanced Healthcare Materials, EarlyView.
Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang, Atakan Tevlek, Pawel L. Urban, Boaz Mizrahi, Onome Ejeromedoghene, Roshan Deen, Yuanjing Lin, Jagan Mohan Dodda   +7 more
wiley   +1 more source

Unusual Effect of α-olefins as Chain Transfer Agents in Ethylene Polymerization over the Catalyst with Nonsymmetrical Bis(imino)pyridine Complex of Fe(II) and Modified Methylalumoxane (MMAO) Cocatalyst. [PDF]

Int J Mol Sci, 2022
Semikolenova NV, Matsko MA, Zakharov VA, Sun WH.   +3 more
europepmc   +1 more source

Crowded Diphosphinomethane Ligands in Catalysis: [(R2PCH2PR′2-κ2P)-NiR″]+ Cations for Ethylene Polymerization without Activators

, 2012
The preparation of a series of nickel dichloride complexes with bulky diphosphinomethane chelate ligands R2PCH2PR′2 is reported. Reaction with the appropriate Grignard reagent leads to the corresponding dimethyl and dibenzyl complexes.
Peter Hofmann, Schultz, Madeleine, Eisentrager, Frank, Paul Jakob, Patrick Hanno-Igels, Jakob, Paul, Frank Eisenträger, Frank Rominger, Regius, Christian, Madeleine Schultz, Rominger, Frank, Irene Gruber, Hanno-Igels, Patrick, Gruber, Irene, Christian Regius, Hofmann, Peter   +15 more
core   +1 more source

Dual Acidic pH‐Responsive Post‐Crosslinked E‐Spun Nanofibrous Scaffolds Exhibiting Enhanced Disassembly and Release for Localized Cancer Treatment

Advanced Healthcare Materials, EarlyView.
Dual acidic pH‐responsive degradable e‐spun nanofibrous mats crosslinked with acid‐labile imine and boronic ester linkages that exhibit rapid degradation and enhanced release of encapsulated anticancer drugs through their acid‐catalyzed hydrolysis and their doxorubicin‐loaded mats having desired antitumoral activity and hemocompatibility, as promising ...
Sofia Nieves Casillas‐Popova, Arianna Cirillo, Cameron D. Skinner, Dajana Vuckovic, Jung Kwon Oh   +4 more
wiley   +1 more source

Correlating the Morphological Evolution of Individual Catalyst Particles to the Kinetic Behavior of Metallocene-Based Ethylene Polymerization Catalysts. [PDF]

JACS Au, 2021
Werny MJ, Zarupski J, Ten Have IC, Piovano A, Hendriksen C, Friederichs NH, Meirer F, Groppo E, Weckhuysen BM.   +8 more
europepmc   +1 more source