Results 71 to 80 of about 5,159 (225)

Comparative Analysis of Ethylene/Diene Copolymerization and Ethylene/Propylene/Diene Terpolymerization Using Ansa-Zirconocene Catalyst with Alkylaluminum/Borate Activator: The Effect of Conjugated and Nonconjugated Dienes on Catalytic Behavior and Polymer Microstructure

Molecules, 2021
The copolymerization of ethylene‒diene conjugates (butadiene (BD), isoprene (IP) and nonconjugates (5-ethylidene-2-norbornene (ENB), vinyl norbornene VNB, 4-vinylcyclohexene (VCH) and 1, 4-hexadiene (HD)), and terpolymerization of ethylene-propylene ...
Amjad Ali, Muhammad Khurram Tufail, Muhammad Imran Jamil, Waleed Yaseen, Nafees Iqbal, Munir Hussain, Asad Ali, Tariq Aziz, Zhiqiang Fan, Li Guo   +9 more
doaj   +1 more source

A Suzuki Coupling Based Route to 2,2'-Bis(2-indenyl)biphenyl Derivatives [PDF]

, 2002
Because of the promising performance in olefin polymerization of 2,2'-bis(2-indenyldiyl)biphenyl zirconium dichloride, we developed a new and broadly applicable route to 2,2'-bis(2-indenyl)biphenyl derivatives.
Arts, Henricus J.,, Beijer, Felix H.,, Gruter, Gert-Jan M.,, IJpeij, Edwin G.,, Newton, Claire,, Vries, Johannes G. de,   +5 more
core   +3 more sources

Electroenzymatic Cascades for Nitrogen Upgrading: Beyond Ammonia Towards Value‐Added Nitrogen Chemicals

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
This review maps how electroenzymatic cascades that couple nitrogen‐cycle enzymes with C─N bond forming auxilary enzymes, powered by direct electron transfer (DET) or mediated electron transfer (MET), can upgrade N2 and waste nitrogen streams into value‐added amines, amides, amino acids, and other nitrogen‐based chemicals.
Rohit G. Jadhav, Vamshi Krishna Kamaja, Wassim El Housseini, Monica Brachi, Shelley D. Minteer   +4 more
wiley   +1 more source

Highly Flowable Nano TiO₂/Porous Organic Polymer (POP) Supports for Efficient Metallocene Catalysts

Nanomaterials, 2020
Porous organic polymers (POPs) have proven to be an efficient support in the olefin polymerization catalyst field. In this paper, nano TiO2 beads were used to modulate the pore structure, bulk density, and surface morphology and flowability of the ...
Xiong Wang, Wenqian Kang, Lin Gao, Guangquan Li, Xuerong Chen, Yi Guo   +5 more
doaj   +1 more source

Half-titanocene 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate chlorides: Synthesis, characterization and ethylene (co-) polymerization behavior [PDF]

, 2013
A series of half-titanocene chloride complexes bearing 5-t-butyl-2-(1-(arylimino)methyl)quinolin-8-olate ligands (L), CpTiLCl₂, has been synthesized in acceptable yields by the stoichiometric reaction of CpTiCl₃ with the respective potassium 5-t-butyl-2-(
Chen, Langqiu, Redshaw, Carl, Sun, Wen-Hua, Wang, Lin, Yan, Qing, Yang, Wenhong   +5 more
core   +1 more source

Advances in Metal Organic Framework (MOF)–Integrated Smart Textiles

Small Structures, Volume 7, Issue 4, April 2026.
This review provides a comprehensive overview of recent advances in MOF‐integrated smart textiles, focusing on material design principles, integration strategies, and application‐driven performance. Metal–organic frameworks (MOFs), composed of metal nodes coordinated with organic ligands, have emerged as a versatile class of functional materials for ...
Zahir Abbas, Shaila Afroj, Sophia K. Novoselov, Victoria K. Novoselov, Daria V. Andreeva, Kostya S. Novoselov, Nazmul Karim   +6 more
wiley   +1 more source

The ethene polymerisation behaviour of zirconium metallocenes: A steric and electronic investigation into the influence of substituent effects [PDF]

, 2006
PhD - Biochemistry There are 9 files which have been withheld at the author's requestA systematic investigation into the effect that alkyl and aryl substituents have on the ethene polymerisation behaviour of a series of MAO co-catalysed mono ...
Grimmer, Neil Eugene
core  

Isotactic and syndiotactic alternating ethylene/propylene copolymers obtained through non-catalytic hydrogenation of highly stereoregular cis-1,4 poly(1,3-diene)s [PDF]

, 2017
The homogeneous non-catalytic hydrogenation of cis-1,4 poly(isoprene), isotactic cis-1,4 poly(1,3-pentadiene) and syndiotactic cis-1,4 poly(1,3-pentadiene) with diimide, formed by thermal decomposition of para-toluenesulfonylhydrazide, is examined ...
Auriemma, Finizia, Boccia, Antonella Caterina, De Rosa, Claudio, Leone, Giuseppe, Pierro, Ivana, Ricci, Giovanni, Scoti, Miriam, Zanchin, Giorgia   +7 more
core   +1 more source

Metallocene Catalysts for 1‐Butene Polymerization [PDF]

Macromolecular Chemistry and Physics, 2006
AbstractSummary: Isotactic polybutenes of variable isotacticity and melting points of form I in the range 100–125 °C have been prepared with both C2‐ and C1‐symmetric zirconocenes. The C1‐symmetric zirconocenes bearing the bilateral symmetric 2,5‐dimethyl‐7H‐cyclopenta[1,2‐b:4,3‐b′]dithiophene ligand connected by a dimethylsilandiyl bridge to a ...
Luigi Resconi, Isabella Camurati, Federica Malizia   +2 more
openaire   +1 more source

ASH: A Multi‐Scale, Multi‐Theory Modeling Program

Journal of Computational Chemistry, Volume 47, Issue 8, 30 March 2026.
ASH is a Python‐based computational chemistry software for multi‐scale and multi‐theory computations (including QM/MM and ONIOM) and MD simulations. The program is designed for flexible workflows of molecular and biomolecular systems, allowing geometry optimizations, numerical frequencies, high‐level thermochemistry, MD and free‐energy simulations, NEB
Ragnar Bjornsson
wiley   +1 more source