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Consequences of Dispersity on the Self-Assembly of ABA-Type Amphiphilic Block Co-Oligomers
[Image: see text] Intriguingly, little is known about the impact of dispersity on the crystallization driven self-assembly (CDSA) of amphiphilic block copolymers in aqueous media. Here, we investigate the influence of dispersity on the CDSA of ABA-type amphiphilic block co-oligomers (ABCOs). Two pai...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5973780/ https://www.ncbi.nlm.nih.gov/pubmed/29862138 http://dx.doi.org/10.1021/acsmacrolett.8b00168 |
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author | Das, Anindita Petkau-Milroy, Katja Klerks, Gilian van Genabeek, Bas Lafleur, René P. M. Palmans, Anja R. A. Meijer, E. W. |
author_facet | Das, Anindita Petkau-Milroy, Katja Klerks, Gilian van Genabeek, Bas Lafleur, René P. M. Palmans, Anja R. A. Meijer, E. W. |
author_sort | Das, Anindita |
collection | PubMed |
description | [Image: see text] Intriguingly, little is known about the impact of dispersity on the crystallization driven self-assembly (CDSA) of amphiphilic block copolymers in aqueous media. Here, we investigate the influence of dispersity on the CDSA of ABA-type amphiphilic block co-oligomers (ABCOs). Two pairs of ABCOs are synthesized comprising discrete (Đ = 1.00) or disperse (Đ = 1.20) isotactic l-lactic acid 16-mers as the semicrystalline hydrophobic block and either oligo(ethylene glycol) methyl ether (MeOoEG) or oligo(tetraethylene glycol succinate) (oTEGSuc) as the discrete hydrophilic block. Self-assembly studies in water with 10% THF reveal uniform nanofibers/2D sheets for the discrete oligomers, but such structural regularity is largely compromised in the disperse oligomers. The results are corroborated by sharp melting transitions in both solution and bulk for the discrete ABCOs, unlike their disperse analogues that show a lack of crystallization. Interestingly, the discrete MeOoEG-LLA oligomer reveals crystallization driven gelation, illustrating the contrasting differences between the discrete oligomers and their disperse counterparts. |
format | Online Article Text |
id | pubmed-5973780 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-59737802018-05-30 Consequences of Dispersity on the Self-Assembly of ABA-Type Amphiphilic Block Co-Oligomers Das, Anindita Petkau-Milroy, Katja Klerks, Gilian van Genabeek, Bas Lafleur, René P. M. Palmans, Anja R. A. Meijer, E. W. ACS Macro Lett [Image: see text] Intriguingly, little is known about the impact of dispersity on the crystallization driven self-assembly (CDSA) of amphiphilic block copolymers in aqueous media. Here, we investigate the influence of dispersity on the CDSA of ABA-type amphiphilic block co-oligomers (ABCOs). Two pairs of ABCOs are synthesized comprising discrete (Đ = 1.00) or disperse (Đ = 1.20) isotactic l-lactic acid 16-mers as the semicrystalline hydrophobic block and either oligo(ethylene glycol) methyl ether (MeOoEG) or oligo(tetraethylene glycol succinate) (oTEGSuc) as the discrete hydrophilic block. Self-assembly studies in water with 10% THF reveal uniform nanofibers/2D sheets for the discrete oligomers, but such structural regularity is largely compromised in the disperse oligomers. The results are corroborated by sharp melting transitions in both solution and bulk for the discrete ABCOs, unlike their disperse analogues that show a lack of crystallization. Interestingly, the discrete MeOoEG-LLA oligomer reveals crystallization driven gelation, illustrating the contrasting differences between the discrete oligomers and their disperse counterparts. American Chemical Society 2018-04-16 2018-05-15 /pmc/articles/PMC5973780/ /pubmed/29862138 http://dx.doi.org/10.1021/acsmacrolett.8b00168 Text en Copyright © 2018 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes. |
spellingShingle | Das, Anindita Petkau-Milroy, Katja Klerks, Gilian van Genabeek, Bas Lafleur, René P. M. Palmans, Anja R. A. Meijer, E. W. Consequences of Dispersity on the Self-Assembly of ABA-Type Amphiphilic Block Co-Oligomers |
title | Consequences of Dispersity on the Self-Assembly of
ABA-Type Amphiphilic Block Co-Oligomers |
title_full | Consequences of Dispersity on the Self-Assembly of
ABA-Type Amphiphilic Block Co-Oligomers |
title_fullStr | Consequences of Dispersity on the Self-Assembly of
ABA-Type Amphiphilic Block Co-Oligomers |
title_full_unstemmed | Consequences of Dispersity on the Self-Assembly of
ABA-Type Amphiphilic Block Co-Oligomers |
title_short | Consequences of Dispersity on the Self-Assembly of
ABA-Type Amphiphilic Block Co-Oligomers |
title_sort | consequences of dispersity on the self-assembly of
aba-type amphiphilic block co-oligomers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5973780/ https://www.ncbi.nlm.nih.gov/pubmed/29862138 http://dx.doi.org/10.1021/acsmacrolett.8b00168 |
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