New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers
We describe herein the synthesis and controlled ring-opening metathesis polymerization (ROMP) of highly functional zwitterionic sulfopropylbetaine- and carboxyethylbetaine-exo-7-oxanorbornene derivatives with the first-generation Grubbs' initiator RuCl 2(PCy...
| Main Authors: | , |
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| Format: | Journal Article |
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American Chemical Society
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/40765 |
| _version_ | 1848755958771089408 |
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| author | Rankin, D. Lowe, Andrew |
| author_facet | Rankin, D. Lowe, Andrew |
| author_sort | Rankin, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We describe herein the synthesis and controlled ring-opening metathesis polymerization (ROMP) of highly functional zwitterionic sulfopropylbetaine- and carboxyethylbetaine-exo-7-oxanorbornene derivatives with the first-generation Grubbs' initiator RuCl 2(PCy 3) 2CHPh in a 2,2,2-trifluoroethanol/methylene chloride solvent mixture. These are the first examples of such norbornene-based betaine substrates. Both species can be polymerized directly in a controlled manner in organic media as judged from the kinetic profiles and aqueous size exclusion chromatographic analysis. This represents the first time betaine monomers have been polymerized directly in a controlled fashion by a technique other than a controlled free radical polymerization process, and the first time it has been achieved in organic, as opposed to aqueous, media. Finally, preliminary results demonstrate that water-soluble, salt-responsive AB diblock copolymers can be prepared and that such materials are able to undergo supramolecular self-assembly in aqueous media to yield nanosized aggregates simply by controlling the aqueous electrolyte concentration. © 2008 American Chemical Society. |
| first_indexed | 2025-11-14T09:04:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-40765 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:04:35Z |
| publishDate | 2008 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-407652017-09-13T14:02:54Z New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers Rankin, D. Lowe, Andrew We describe herein the synthesis and controlled ring-opening metathesis polymerization (ROMP) of highly functional zwitterionic sulfopropylbetaine- and carboxyethylbetaine-exo-7-oxanorbornene derivatives with the first-generation Grubbs' initiator RuCl 2(PCy 3) 2CHPh in a 2,2,2-trifluoroethanol/methylene chloride solvent mixture. These are the first examples of such norbornene-based betaine substrates. Both species can be polymerized directly in a controlled manner in organic media as judged from the kinetic profiles and aqueous size exclusion chromatographic analysis. This represents the first time betaine monomers have been polymerized directly in a controlled fashion by a technique other than a controlled free radical polymerization process, and the first time it has been achieved in organic, as opposed to aqueous, media. Finally, preliminary results demonstrate that water-soluble, salt-responsive AB diblock copolymers can be prepared and that such materials are able to undergo supramolecular self-assembly in aqueous media to yield nanosized aggregates simply by controlling the aqueous electrolyte concentration. © 2008 American Chemical Society. 2008 Journal Article http://hdl.handle.net/20.500.11937/40765 10.1021/ma701952c American Chemical Society restricted |
| spellingShingle | Rankin, D. Lowe, Andrew New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| title | New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| title_full | New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| title_fullStr | New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| title_full_unstemmed | New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| title_short | New well-defined polymeric betaines: First report detailing the synthesis and ROMP of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| title_sort | new well-defined polymeric betaines: first report detailing the synthesis and romp of salt-responsive sulfopropylbetaine- and carboxyethylbetaine-exo-7- oxanorbornene monomers |
| url | http://hdl.handle.net/20.500.11937/40765 |