Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands
[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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-01-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2073-4360/8/2/31 |
| _version_ | 1811268108035293184 |
|---|---|
| author | Norio Nakata Tomoyuki Toda Yusuke Saito Takanori Watanabe Akihiko Ishii |
| author_facet | Norio Nakata Tomoyuki Toda Yusuke Saito Takanori Watanabe Akihiko Ishii |
| author_sort | Norio Nakata |
| collection | DOAJ |
| description | [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%. |
| first_indexed | 2024-04-12T21:15:51Z |
| format | Article |
| id | doaj.art-318f36ebb439445db9c46b85c55011dc |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-04-12T21:15:51Z |
| publishDate | 2016-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-318f36ebb439445db9c46b85c55011dc2022-12-22T03:16:27ZengMDPI AGPolymers2073-43602016-01-01823110.3390/polym8020031polym8020031Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) LigandsNorio Nakata0Tomoyuki Toda1Yusuke Saito2Takanori Watanabe3Akihiko Ishii4Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, JapanDepartment of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, JapanDepartment of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, JapanDepartment of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, JapanDepartment of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan[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%.http://www.mdpi.com/2073-4360/8/2/31zirconiumpost-metallocenestyrene polymerization[OSSO]-type ligandisotactic |
| spellingShingle | Norio Nakata Tomoyuki Toda Yusuke Saito Takanori Watanabe Akihiko Ishii Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands Polymers zirconium post-metallocene styrene polymerization [OSSO]-type ligand isotactic |
| title | Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands |
| title_full | Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands |
| title_fullStr | Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands |
| title_full_unstemmed | Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands |
| title_short | Highly Active and Isospecific Styrene Polymerization Catalyzed by Zirconium Complexes Bearing Aryl-substituted [OSSO]-Type Bis(phenolate) Ligands |
| title_sort | highly active and isospecific styrene polymerization catalyzed by zirconium complexes bearing aryl substituted osso type bis phenolate ligands |
| topic | zirconium post-metallocene styrene polymerization [OSSO]-type ligand isotactic |
| url | http://www.mdpi.com/2073-4360/8/2/31 |
| work_keys_str_mv | AT norionakata highlyactiveandisospecificstyrenepolymerizationcatalyzedbyzirconiumcomplexesbearingarylsubstitutedossotypebisphenolateligands AT tomoyukitoda highlyactiveandisospecificstyrenepolymerizationcatalyzedbyzirconiumcomplexesbearingarylsubstitutedossotypebisphenolateligands AT yusukesaito highlyactiveandisospecificstyrenepolymerizationcatalyzedbyzirconiumcomplexesbearingarylsubstitutedossotypebisphenolateligands AT takanoriwatanabe highlyactiveandisospecificstyrenepolymerizationcatalyzedbyzirconiumcomplexesbearingarylsubstitutedossotypebisphenolateligands AT akihikoishii highlyactiveandisospecificstyrenepolymerizationcatalyzedbyzirconiumcomplexesbearingarylsubstitutedossotypebisphenolateligands |