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Article: Supramolecular self-assembly of dendronized polymers: Reversible control of the polymer architectures through acid-base reactions

TitleSupramolecular self-assembly of dendronized polymers: Reversible control of the polymer architectures through acid-base reactions
Authors
Issue Date2006
Citation
Journal of the American Chemical Society, 2006, v. 128, n. 33, p. 10707-10715 How to Cite?
AbstractAcid-base switchable supramolecular dendronized polyacetylenes (DPAs) with increasing steric bulk on going from generation one [G1] to three [G3], were constructed using multiple self-assembly processes between Fréchet-type [G1]-[G3]-dendritic dialkylammonium salts and a dibenzo[24]crown-8-containing polymer. The formation of the supramolecular systems is acid-base switchable to either an ON (rodlike dendronized polymers) or an OFF (flexible polymers) state. Thus, by controlling the superstructures of the supramolecular polymers with the [G1]-[G3] dendrons, it is possible to induce conformational changes within the polymer backbones. The supramolecular dendronized polymers, as well as their threading-dethreading properties, were characterized by 1H NMR and UV absorption spectroscopies, gel permeation chromatography (GPC) and light scattering (LS). Independent measures of molecular weight (GPC, LS) indicate that DPAs behave as increasingly rigid macromolecules with each generation in solution. Molecular dynamics simulations of each DPA suggest that the lengths of the polymer backbones increase accordingly. Atomic force microscopy of the [G3]-dendronized polystyrene (DPS), as well as the DPAs, reveal surface morphologies indicative of aggregated superstructures. © 2006 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/332685
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLeung, Ken C.F.-
dc.contributor.authorMendes, Paula M.-
dc.contributor.authorMagonov, Sergei N.-
dc.contributor.authorNorthrop, Brian H.-
dc.contributor.authorKim, Sangcheol-
dc.contributor.authorPatel, Kaushik-
dc.contributor.authorFlood, Amar H.-
dc.contributor.authorTseng, Hsian Rong-
dc.contributor.authorStoddart, J. Fraser-
dc.date.accessioned2023-10-06T05:13:29Z-
dc.date.available2023-10-06T05:13:29Z-
dc.date.issued2006-
dc.identifier.citationJournal of the American Chemical Society, 2006, v. 128, n. 33, p. 10707-10715-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/332685-
dc.description.abstractAcid-base switchable supramolecular dendronized polyacetylenes (DPAs) with increasing steric bulk on going from generation one [G1] to three [G3], were constructed using multiple self-assembly processes between Fréchet-type [G1]-[G3]-dendritic dialkylammonium salts and a dibenzo[24]crown-8-containing polymer. The formation of the supramolecular systems is acid-base switchable to either an ON (rodlike dendronized polymers) or an OFF (flexible polymers) state. Thus, by controlling the superstructures of the supramolecular polymers with the [G1]-[G3] dendrons, it is possible to induce conformational changes within the polymer backbones. The supramolecular dendronized polymers, as well as their threading-dethreading properties, were characterized by 1H NMR and UV absorption spectroscopies, gel permeation chromatography (GPC) and light scattering (LS). Independent measures of molecular weight (GPC, LS) indicate that DPAs behave as increasingly rigid macromolecules with each generation in solution. Molecular dynamics simulations of each DPA suggest that the lengths of the polymer backbones increase accordingly. Atomic force microscopy of the [G3]-dendronized polystyrene (DPS), as well as the DPAs, reveal surface morphologies indicative of aggregated superstructures. © 2006 American Chemical Society.-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titleSupramolecular self-assembly of dendronized polymers: Reversible control of the polymer architectures through acid-base reactions-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ja058151v-
dc.identifier.scopuseid_2-s2.0-33747755112-
dc.identifier.volume128-
dc.identifier.issue33-
dc.identifier.spage10707-
dc.identifier.epage10715-
dc.identifier.isiWOS:000239791100035-

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