Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts
Polylactide (PLA) is a fully biodegradable and recyclable plastic, produced from a bio‐derived monomer: it is a circular economy plastic. Its properties depend upon its stereochemistry and isotactic PLA shows superior thermal‐mechanical performances. Here, a new means to control tacticity by exploit...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Wiley
2019
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| _version_ | 1826267536167010304 |
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| author | Lim, J Yuntawattana, N Beer, P Williams, C |
| author_facet | Lim, J Yuntawattana, N Beer, P Williams, C |
| author_sort | Lim, J |
| collection | OXFORD |
| description | Polylactide (PLA) is a fully biodegradable and recyclable plastic, produced from a bio‐derived monomer: it is a circular economy plastic. Its properties depend upon its stereochemistry and isotactic PLA shows superior thermal‐mechanical performances. Here, a new means to control tacticity by exploiting rotaxane conformational dynamism is described. Dynamic achiral [2]rotaxanes can show high isoselectivity (Pi=0.8, 298 K) without requiring any chiral additives and enchain by a chain end control mechanism. The organocatalytic dynamic stereoselectivity is likely applicable to other small‐molecule and polymerization catalyses. |
| first_indexed | 2024-03-06T20:55:42Z |
| format | Journal article |
| id | oxford-uuid:392c80e8-cb19-415c-8039-bb0c7395d74e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:55:42Z |
| publishDate | 2019 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:392c80e8-cb19-415c-8039-bb0c7395d74e2022-03-26T13:54:02ZIsoselective lactide ring opening polymerisation using [2]rotaxane catalystsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:392c80e8-cb19-415c-8039-bb0c7395d74eEnglishSymplectic Elements at OxfordWiley2019Lim, JYuntawattana, NBeer, PWilliams, CPolylactide (PLA) is a fully biodegradable and recyclable plastic, produced from a bio‐derived monomer: it is a circular economy plastic. Its properties depend upon its stereochemistry and isotactic PLA shows superior thermal‐mechanical performances. Here, a new means to control tacticity by exploiting rotaxane conformational dynamism is described. Dynamic achiral [2]rotaxanes can show high isoselectivity (Pi=0.8, 298 K) without requiring any chiral additives and enchain by a chain end control mechanism. The organocatalytic dynamic stereoselectivity is likely applicable to other small‐molecule and polymerization catalyses. |
| spellingShingle | Lim, J Yuntawattana, N Beer, P Williams, C Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts |
| title | Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts |
| title_full | Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts |
| title_fullStr | Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts |
| title_full_unstemmed | Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts |
| title_short | Isoselective lactide ring opening polymerisation using [2]rotaxane catalysts |
| title_sort | isoselective lactide ring opening polymerisation using 2 rotaxane catalysts |
| work_keys_str_mv | AT limj isoselectivelactideringopeningpolymerisationusing2rotaxanecatalysts AT yuntawattanan isoselectivelactideringopeningpolymerisationusing2rotaxanecatalysts AT beerp isoselectivelactideringopeningpolymerisationusing2rotaxanecatalysts AT williamsc isoselectivelactideringopeningpolymerisationusing2rotaxanecatalysts |