pH-Regulated Selectivity in Supramolecular Polymerizations: Switching between Co- and Homopolymers

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000349664300023&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1002/chem.201406281
eISSN
1521-3765
Externe Identifier
  • Clarivate Analytics Document Solution ID: CB5JW
  • PubMed Identifier: 25583049
ISSN
0947-6539
Ausgabe der Veröffentlichung
8
Zeitschrift
CHEMISTRY-A EUROPEAN JOURNAL
Schlüsselwörter
  • controlled polymerization
  • self-assembly
  • pH regulation
  • polymers
  • supramolecular chemistry
Paginierung
3304 - 3309
Datum der Veröffentlichung
2015
Status
Published
Titel
pH-Regulated Selectivity in Supramolecular Polymerizations: Switching between Co- and Homopolymers
Sub types
  • Article
Ausgabe der Zeitschrift
21

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>A strategy is presented to regulate the selectivity in aqueous supramolecular polymerizations by changes in pH. In neutral buffered conditions, oppositely charged phenylalanine‐based dendritic peptide amphiphiles self‐assemble into (AB)<jats:sub><jats:italic>n</jats:italic></jats:sub> alternating copolymers of low polydispersity when mixed in a 1:1 comonomer feed ratio. Via pH switch of the glutamic acid and lysine side chains, attractive Coulomb interactions in the coassembled materials are screened and selective polymerization occurs to form (A)<jats:sub><jats:italic>n</jats:italic></jats:sub> homopolymers of the acidic comonomer at low pH and (B)<jats:sub><jats:italic>n</jats:italic></jats:sub> homopolymers of the basic comonomer at high pH, while the complementary comonomer is released during the transition. Reversible switching is demonstrated between these three different polymeric states, which were characterized by CD and fluorescence spectroscopy, using a peptide based minimalistic fluorophore/quencher pair, and transmission electron microscopy.</jats:p>
Autoren
DOI
10.1002/chem.201406281
eISSN
1521-3765
ISSN
0947-6539
Ausgabe der Veröffentlichung
8
Zeitschrift
Chemistry – A European Journal
Sprache
en
Online publication date
2015
Paginierung
3304 - 3309
Datum der Veröffentlichung
2015
Status
Published
Herausgeber
Wiley
Herausgeber URL
http://dx.doi.org/10.1002/chem.201406281
Datum der Datenerfassung
2023
Titel
pH‐Regulated Selectivity in Supramolecular Polymerizations: Switching between Co‐ and Homopolymers
Ausgabe der Zeitschrift
21

Datenquelle: Crossref

Abstract
A strategy is presented to regulate the selectivity in aqueous supramolecular polymerizations by changes in pH. In neutral buffered conditions, oppositely charged phenylalanine-based dendritic peptide amphiphiles self-assemble into (A-B)n alternating copolymers of low polydispersity when mixed in a 1:1 comonomer feed ratio. Via pH switch of the glutamic acid and lysine side chains, attractive Coulomb interactions in the coassembled materials are screened and selective polymerization occurs to form (A)n homopolymers of the acidic comonomer at low pH and (B)n homopolymers of the basic comonomer at high pH, while the complementary comonomer is released during the transition. Reversible switching is demonstrated between these three different polymeric states, which were characterized by CD and fluorescence spectroscopy, using a peptide based minimalistic fluorophore/quencher pair, and transmission electron microscopy.
Addresses
  • Organic Chemistry Institute and CeNTech, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster (Germany).
Autoren
DOI
10.1002/chem.201406281
eISSN
1521-3765
Externe Identifier
  • PubMed Identifier: 25583049
Funding acknowledgements
  • Fonds der Chemischen Industrie:
  • COST Action: CM1005
  • DFG: SFB 858
Open access
false
ISSN
0947-6539
Ausgabe der Veröffentlichung
8
Zeitschrift
Chemistry (Weinheim an der Bergstrasse, Germany)
Sprache
eng
Medium
Print-Electronic
Online publication date
2015
Paginierung
3304 - 3309
Datum der Veröffentlichung
2015
Status
Published
Datum der Datenerfassung
2015
Titel
pH-regulated selectivity in supramolecular polymerizations: switching between Co- and homopolymers.
Sub types
  • Research Support, Non-U.S. Gov't
  • Journal Article
Ausgabe der Zeitschrift
21

Datenquelle: Europe PubMed Central

Abstract
A strategy is presented to regulate the selectivity in aqueous supramolecular polymerizations by changes in pH. In neutral buffered conditions, oppositely charged phenylalanine-based dendritic peptide amphiphiles self-assemble into (A-B)n alternating copolymers of low polydispersity when mixed in a 1:1 comonomer feed ratio. Via pH switch of the glutamic acid and lysine side chains, attractive Coulomb interactions in the coassembled materials are screened and selective polymerization occurs to form (A)n homopolymers of the acidic comonomer at low pH and (B)n homopolymers of the basic comonomer at high pH, while the complementary comonomer is released during the transition. Reversible switching is demonstrated between these three different polymeric states, which were characterized by CD and fluorescence spectroscopy, using a peptide based minimalistic fluorophore/quencher pair, and transmission electron microscopy.
Autoren
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/25583049
DOI
10.1002/chem.201406281
eISSN
1521-3765
Ausgabe der Veröffentlichung
8
Zeitschrift
Chemistry
Schlüsselwörter
  • controlled polymerization
  • pH regulation
  • polymers
  • self-assembly
  • supramolecular chemistry
Sprache
eng
Country
Germany
Paginierung
3304 - 3309
Datum der Veröffentlichung
2015
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2016
Titel
pH-regulated selectivity in supramolecular polymerizations: switching between Co- and homopolymers.
Sub types
  • Journal Article
  • Research Support, Non-U.S. Gov't
Ausgabe der Zeitschrift
21

Datenquelle: PubMed

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