Next Article in Journal
Development of PVDF Membrane Nanocomposites via Various Functionalization Approaches for Environmental Applications
Next Article in Special Issue
Investigations of the Ligand Electronic Effects on α-Diimine Nickel(II) Catalyzed Ethylene Polymerization
Previous Article in Journal
Seaweed Polysaccharide-Based Nanoparticles: Preparation and Applications for Drug Delivery
Previous Article in Special Issue
Immortal Ring-Opening Polymerization of rac-Lactide Using Polymeric Alcohol as Initiator to Prepare Graft Copolymer
Open AccessArticle

Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands

Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
*
Authors to whom correspondence should be addressed.
Academic Editor: Changle Chen
Polymers 2016, 8(2), 31; https://doi.org/10.3390/polym8020031
Received: 17 December 2015 / Revised: 13 January 2016 / Accepted: 20 January 2016 / Published: 26 January 2016
(This article belongs to the Special Issue Metal-Mediated Polymer Synthesis)
[OSSO]-type dibenzyl zirconium(IV) complexes 9 and 10 possessing aryl substituents ortho to the phenoxide moieties (ortho substituents, phenyl and 2,6-dimethylphenyl (Dmp)) were synthesized and characterized. Upon activation with dMAO (dried methylaluminoxane), complex 9 was found to promote highly isospecific styrene polymerizations ([mm] = 97.5%–99%) with high molecular weights Mw up to 181,000 g·mmol−1. When the Dmp-substituted pre-catalyst 10/dMAO system was used, the highest activity, over 7700 g·mmol(10)−1·h−1, was recorded involving the formation of precisely isospecific polystyrenes of [mm] more than 99%. View Full-Text
Keywords: zirconium; post-metallocene; styrene polymerization; [OSSO]-type ligand; isotactic zirconium; post-metallocene; styrene polymerization; [OSSO]-type ligand; isotactic
Show Figures

Graphical abstract

MDPI and ACS Style

Nakata, N.; Toda, T.; Saito, Y.; Watanabe, T.; Ishii, A. Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands. Polymers 2016, 8, 31. https://doi.org/10.3390/polym8020031

AMA Style

Nakata N, Toda T, Saito Y, Watanabe T, Ishii A. Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands. Polymers. 2016; 8(2):31. https://doi.org/10.3390/polym8020031

Chicago/Turabian Style

Nakata, Norio; Toda, Tomoyuki; Saito, Yusuke; Watanabe, Takanori; Ishii, Akihiko. 2016. "Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands" Polymers 8, no. 2: 31. https://doi.org/10.3390/polym8020031

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop