Effects of the Linking of Cyclopentadienyl and Ketimide Ligands in Titanium Half‐Sandwich Olefin Polymerization Catalysts
Sign Up to like & getrecommendations! Published in 2017 at "ChemCatChem"
DOI: 10.1002/cctc.201700498
Abstract: The role of the ketimide ligand geometry in Ti half‐sandwich complexes and the consequent effects in olefin polymerization catalysis (ethylene, styrene, 1‐hexene polymerization, and ethylene/1‐hexene copolymerization) were investigated under various conditions. [CpTiCl2(N=CtBu2)] (1; Cp=η5‐cyclopentadienyl) was used… read more here.
Keywords: cyclopentadienyl; polymerization; polymerization catalysts; olefin polymerization ... See more keywords
Polar comonomer incorporation using cationic Ni α-diimine olefin polymerization catalysts
Sign Up to like & getrecommendations! Published in 2018 at "Science China Chemistry"
DOI: 10.1007/s11426-018-9372-2
Abstract: Polyolefins are an indispensable class of materials that have become the most widely produced and utilized polymers today. They are readily synthesized from cheap and abundant monomer feedstocks, such as ethylene and propylene, and are… read more here.
Keywords: polar comonomers; polar comonomer; polymerization; chemistry ... See more keywords
Distinctive Stereochemically Linked Cooperative Effects in Bimetallic Titanium Olefin Polymerization Catalysts
Sign Up to like & getrecommendations! Published in 2017 at "Organometallics"
DOI: 10.1021/acs.organomet.7b00641
Abstract: The complex (μ-Me2C-3,3′){(η5-cyclopentadienyl)[1-Me2Si-(tBuN)](TiMe2)}2 (3) was prepared as a new binuclear catalyst motif for homogeneous olefin polymerization. Complex 3 exists as rac-3 and meso-3 diastereomers, which can be separated and characterized by solution NMR spectroscopy and… read more here.
Keywords: olefin polymerization; cyclopentadienyl me2si; spectroscopy; rac ... See more keywords
Elucidating Secondary Metal Cation Effects on Nickel Olefin Polymerization Catalysts
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DOI: 10.1021/acscatal.0c02949
Abstract: Secondary metal cations, such as alkali and transition metal ions, have been shown to enhance the catalytic performance of nickel and palladium olefin polymerization catalysts. Their beneficial eff... read more here.
Keywords: secondary metal; elucidating secondary; polymerization catalysts; olefin polymerization ... See more keywords
Photoinduced Initiation of Olefin Polymerization: Enabling Spatial Control with Light.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c08548
Abstract: Polyolefins constitute the majority of plastics produced worldwide. Despite the variety of precatalyst activation mechanisms known in the literature, the development of spatially controlled olefin polymerizations remains relatively unknown. If successful, control over the olefin… read more here.
Keywords: spatial control; olefin polymerization; initiation olefin; photoinduced initiation ... See more keywords
Advancing the Compositional Analysis of Olefin Polymerization Catalysts with High-Throughput Fluorescence Microscopy
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c09159
Abstract: To optimize the performance of supported olefin polymerization catalysts, novel methodologies are required to evaluate the composition, structure, and morphology of both pristine and prepolymerized samples in a resource-efficient, high-throughput manner. Here, we report on… read more here.
Keywords: fluorescence microscopy; polymerization catalysts; microscopy; olefin polymerization ... See more keywords
Light-mediated olefin coordination polymerization and photoswitches
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DOI: 10.1039/d0qo00426j
Abstract: Polyolefins are important polymeric materials in the plastics industry. While classical Ziegler–Natta catalysts are still superior in global polyolefin production, it is challenging to control their polymerization behavior due to intrinsic heterogeneity. A significant number… read more here.
Keywords: mediated olefin; coordination; polymerization; light mediated ... See more keywords
A Hydrocarbon Soluble, Molecular and “Complete” Al-Cocatalyst for High Temperature Olefin Polymerization
Sign Up to like & getrecommendations! Published in 2023 at "Polymers"
DOI: 10.3390/polym15061378
Abstract: The dinuclear aluminum salt {[iBu2(DMA)Al]2(μ-H)}+[B(C6F5)4]− (AlHAl; DMA = N,N-dimethylaniline) is the prototype of a new class of molecular cocatalysts for catalytic olefin polymerization, its modular nature offering easy avenues for tailoring the activator to specific… read more here.
Keywords: hydrocarbon soluble; olefin polymerization; soluble molecular; high temperature ... See more keywords