Counterions control the self-assembly of structurally persistent micelles: Theoretical prediction and experimental observation of stabilization by sodium ions
Jäger C, Hirsch A, Schade B, Böttcher C, Clark T (2009)
Publication Type: Journal article, Original article
Publication year: 2009
Journal
Original Authors: Jäger C.M., Hirsch A., Schade B., Böttcher C., Clark T.
Publisher: Wiley-VCH Verlag
Book Volume: 15
Pages Range: 8586-8592
Journal Issue: 34
Abstract
We show by molecular-dynamics (MD) simulations and cryotransmission electron microscopy (cryo-TEM) experiments that the size and form of structurally persistent micelles formed by the T-shaped amphiphile 1 are controlled by the counterions. The two techniques reveal that the micelles are specifically stabilized by sodium counterions relative to po-tassium ions. Both the simulations and the cryo-TEM experiments suggest that the micelles are stabilized by strongly conserved hydrated contact ion pairs with sodium counterions but not with potassium ions. We suggest that the TEM is observing local high density due to hydrated carboxylate/sodium ion pairs at the surface of the micelle. A high concentration of such structures is found in MD simulations with sodium counterions, but not with potassium. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
Authors with CRIS profile
Christof Jäger
Computer-Chemie-Centrum
Andreas Hirsch
Lehrstuhl für Organische Chemie II
Timothy Clark
Computer-Chemie-Centrum
Additional Organisation(s)
Involved external institutions
Germany (DE)How to cite
APA:
Jäger, C., Hirsch, A., Schade, B., Böttcher, C., & Clark, T. (2009). Counterions control the self-assembly of structurally persistent micelles: Theoretical prediction and experimental observation of stabilization by sodium ions. Chemistry - A European Journal, 15(34), 8586-8592. https://doi.org/10.1002/chem.200900885
MLA:
Jäger, Christof, et al. "Counterions control the self-assembly of structurally persistent micelles: Theoretical prediction and experimental observation of stabilization by sodium ions." Chemistry - A European Journal 15.34 (2009): 8586-8592.
BibTeX: Download