Results 81 to 90 of about 5,339 (237)

Heterogeneity of Active Sites in the Polymer Chain Transfer Reactions at Olefin Polymerization over Multisite Supported Ziegler-Natta Catalysts. [PDF]

Polymers (Basel), 2023
Matsko M, Zakharov V.
europepmc   +1 more source

Photogenerated Oxetanes as a Gateway to Uphill Cyclopropanation

Angewandte Chemie International Edition, EarlyView.
An atom‐economical route to densely functionalized cyclopropanes from furans and photochemically activated aldehydes is enabled by a unique oxetane‐to‐cyclopropane rearrangement. These cyclopropanes can be used to access complex bioactive scaffolds and serve as a platform for asymmetric cyclopropane synthesis.
Tim Köglmeier, Thomas J. Tiefel, Oliver Reiser   +2 more
wiley   +1 more source

Synthesis and characterization of butadiene-1,3 and octene-1 copolymer prepared by a Ziegler-Natta catalyst based on neodymium

Polímeros, 2011
The aim of this work is to evaluate the influence of octene-1 incorporation in the polybutadiene chain on the polymerization reaction and polymer characteristics.
Gustavo M. Silva, Fernanda M. B. Coutinho, Ivana L. Mello, Marcos A. S. Costa, Daniele F. C. Junger   +4 more
doaj  

A Computational Evaluation of the Steric and Electronic Contributions in Stereoselective Olefin Polymerization with Pyridylamido-Type Catalysts. [PDF]

Molecules, 2023
D'Anania O, De Rosa C, Talarico G.
europepmc   +1 more source

Advancing the Compositional Analysis of Olefin Polymerization Catalysts with High-Throughput Fluorescence Microscopy. [PDF]

J Am Chem Soc, 2022
Werny MJ, Siebers KB, Friederichs NH, Hendriksen C, Meirer F, Weckhuysen BM.   +5 more
europepmc   +1 more source

MAO- and Borate-Free Activating Supports for Group 4 Metallocene and Post-Metallocene Catalysts of α-Olefin Polymerization and Oligomerization. [PDF]

Polymers (Basel), 2023
Nifant'ev IE, Komarov PD, Kostomarova OD, Kolosov NA, Ivchenko PV.   +4 more
europepmc   +1 more source

The Effect of Titanium Tetra-Butoxide Catalyst on the Olefin Polymerization. [PDF]

Polymers (Basel), 2021
Alsuhybani MS, Alosime EM.
europepmc   +1 more source

Hafnium vs. Zirconium, the Perpetual Battle for Supremacy in Catalytic Olefin Polymerization: A Simple Matter of Electrophilicity? [PDF]

Polymers (Basel), 2021
Vittoria A, Goryunov GP, Izmer VV, Kononovich DS, Samsonov OV, Zaccaria F, Urciuoli G, Budzelaar PHM, Busico V, Voskoboynikov AZ, Uborsky DV, Ehm C, Cipullo R.   +12 more
europepmc   +1 more source

Photochemical afterglow of single organic molecules with wide‐range tunable lifetime

PhotoMat, EarlyView., 2023
“All‐in‐one” strategy was used to achieve photochemical afterglow in single organic molecule, with second‐to‐hour range tunable lifetime by tailoring the electron‐withdrawing ability of substituents. Abstract Background Photochemical afterglow that relies on slow release of photons from the chemical energy stored by light pre‐irradiation has emerged as
Yuetian Pei, Yiwei Fan, Yawei Liu, Kuangshi Sun, Wei Feng, Qian Liu, Fuyou Li   +6 more
wiley   +1 more source

Preparation of High-Purity Ammonium Tetrakis(pentafluorophenyl)borate for the Activation of Olefin Polymerization Catalysts. [PDF]

Molecules, 2021
Lee HJ, Baek JW, Seo YH, Lee HC, Jeong SM, Lee J, Lee CG, Lee BY.   +7 more
europepmc   +1 more source