Reversible Adhesion with Polyelectrolyte Brushes Tailored via the Uptake and Release of Trivalent Lanthanum Ions

作者: Robert Farina , Nicolas Laugel , Jing Yu , Matthew Tirrell

DOI: 10.1021/ACS.JPCC.5B02121

关键词: Inorganic chemistryLanthanumCounterionPolyelectrolyte brushesIonColloidSurface forces apparatusChemical engineeringCharge densityPolyelectrolyteChemistry

摘要: Applications of end-tethered polyelectrolyte “brushes” to modify solid surfaces have been developed and studied for their colloidal stabilization high lubrication properties. Current efforts expanded into biological realms stimuli-responsive materials. Our work explores responsive reversible aspects brush behavior when chains interact with oppositely charged multivalent ions complexes, which act as counterions. There is a significant void in the literature regarding interactions species. This paper demonstrates that between bearing negatively brushes are highly sensitive presence trivalent lanthanum, La3+. Lanthanum cations unique chains, part due small size hydration radius results local charge density. Using La3+ conjunction surface forces apparatus (SFA), adhesion has been...

参考文章(38)
A. Halperin, M. Tirrell, T. P. Lodge, Tethered chains in polymer microstructures Advances in Polymer Science. ,vol. 100, pp. 31- 71 ,(1992) , 10.1007/BFB0051635
Ch. Schaller, T. Schauer, K. Dirnberger, C.D. Eisenbach, Synthesis and stabilizing properties of amphipolar polyelectrolytes European Physical Journal E. ,vol. 6, pp. 365- 376 ,(2001) , 10.1007/S10189-001-8050-8
Christian Schneider, Arben Jusufi, Robert Farina, Philip Pincus, Matthew Tirrell, Matthias Ballauff, Stability behavior of anionic spherical polyelectrolyte brushes in the presence of La(III) counterions Physical Review E. ,vol. 82, pp. 011401- ,(2010) , 10.1103/PHYSREVE.82.011401
Christian Schneider, Arben Jusufi, Robert Farina, Feng Li, Philip Pincus, Matthew Tirrell, Matthias Ballauff, Microsurface potential measurements: repulsive forces between polyelectrolyte brushes in the presence of multivalent counterions. Langmuir. ,vol. 24, pp. 10612- 10615 ,(2008) , 10.1021/LA802303Z
Feng Li, Marc Balastre, Phillip Schorr, J.-F. Argillier, Jinchuan Yang, Jimmy W. Mays, Matthew Tirrell, Differences between tethered polyelectrolyte chains on bare mica and hydrophobically modified mica. Langmuir. ,vol. 22, pp. 4084- 4091 ,(2006) , 10.1021/LA052293L
Drew F. Parsons, Mathias Boström, Pierandrea Lo Nostro, Barry W. Ninham, Hofmeister effects: interplay of hydration, nonelectrostatic potentials, and ion size Physical Chemistry Chemical Physics. ,vol. 13, pp. 12352- 12367 ,(2011) , 10.1039/C1CP20538B
R. Israels, F. A. M. Leermakers, G. J. Fleer, E. B. Zhulina, Charged polymeric brushes: structure and scaling relations. Macromolecules. ,vol. 27, pp. 3249- 3261 ,(1994) , 10.1021/MA00090A018
M. Chen, W. H. Briscoe, S. P. Armes, J. Klein, Lubrication at physiological pressures by polyzwitterionic brushes Science. ,vol. 323, pp. 1698- 1701 ,(2009) , 10.1126/SCIENCE.1169399