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Aromatic ionene topology and counterion-tuned gelation of acidic aqueous solutions
dc.contributor.author | Bachl, Jürgen |
dc.contributor.author | Bertran Cànovas, Òscar |
dc.contributor.author | Mayr, Judith |
dc.contributor.author | Alemán Llansó, Carlos |
dc.contributor.author | Díaz Díaz, David |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2017-06-16T17:56:58Z |
dc.date.available | 2018-04-28T00:30:42Z |
dc.date.issued | 2017-04-28 |
dc.identifier.citation | Bachl, J., Bertran, O., Mayr, J., Aleman, C., Díaz-Díaz, D. Aromatic ionene topology and counterion-tuned gelation of acidic aqueous solutions. "Soft matter", 28 Abril 2017, vol. 13, núm. 16, p. 3031-3041. |
dc.identifier.issn | 1744-683X |
dc.identifier.uri | http://hdl.handle.net/2117/105556 |
dc.description.abstract | Unusual gelation of acidic solutions was achieved using polycations bearing quaternary ammonium moieties. These ionene polymers are based on a disubstituted phenylene dibenzamide core, which allows the construction of different topomers (i.e. ortho-1, meta-2 and para-3). The topology of the polymers was found to play a key role on their aggregation behaviour both in pure water and in a variety of aqueous acidic solutions leading to the formation of stable acidic gels. Specifically, ortho-1 showed superior gelation ability than the analogues meta-2 and para-3 in numerous solutions of different pH and ionic strengths. Lower critical gelation concentrations, higher gel-to-sol transition temperatures and faster gelation were usually observed for ortho-1 regardless the solvent system. Detailed computational molecular dynamic simulations revealed a major role of the counterion (Cl-) and specific polymer¿polymer interactions. In particular, hydrogen bonds, N–H¿p interactions and intramolecular p–p stacking networks are distinctive in ortho-1. In addition, counterions located at internal hydration regions also affect to such polymer¿polymer interactions, acting as binders and, therefore, providing additional stability. |
dc.format.extent | 11 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Polymers |
dc.subject.lcsh | Colloids |
dc.subject.lcsh | Polymerization |
dc.title | Aromatic ionene topology and counterion-tuned gelation of acidic aqueous solutions |
dc.type | Article |
dc.subject.lemac | Polímers |
dc.subject.lemac | Col·loides |
dc.subject.lemac | Polimerització |
dc.contributor.group | Universitat Politècnica de Catalunya. IMEM - Innovació, Modelització i Enginyeria en (BIO) Materials |
dc.identifier.doi | 10.1039/c7sm00234c |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://pubs.rsc.org/en/Content/ArticleLanding/2017/SM/C7SM00234C#!divAbstract |
dc.rights.access | Open Access |
local.identifier.drac | 20569769 |
dc.description.version | Postprint (published version) |
local.citation.author | Bachl, J.; Bertran, O.; Mayr, J.; Aleman, C.; Díaz-Díaz, D. |
local.citation.publicationName | Soft matter |
local.citation.volume | 13 |
local.citation.number | 16 |
local.citation.startingPage | 3031 |
local.citation.endingPage | 3041 |
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