Jump to main content
Jump to site search

Issue 9, 2012
Previous Article Next Article

Slow and remanent electric polarization of adsorbed BSA layer evidenced by neutron reflection

Author affiliations

Abstract

Using neutron reflectivity together with an appropriate electrochemical cell, we have studied the effects of transverse electric field on the bovine serum albumin (BSA) monolayer initially adsorbed at the interface of the aqueous solution and a conductive doped-silicon wafer. Depending on the sign of the initial potential, a second layer is adsorbed, or not, on top of the first whereas a subsequent reversal of potential has no effect. We show that this behaviour reveals the slow and remanent electric polarization of the first BSA layer. Based on the permanent dipolar structure of BSA, we suggest an analogy with dipolar glasses that may account for the slowness and memory of the process.

Graphical abstract: Slow and remanent electric polarization of adsorbed BSA layer evidenced by neutron reflection

Back to tab navigation

Article information


Submitted
29 Nov 2011
Accepted
21 Dec 2011
First published
20 Jan 2012

Soft Matter, 2012,8, 2638-2643
Article type
Paper

Slow and remanent electric polarization of adsorbed BSA layer evidenced by neutron reflection

A. Koutsioubas, D. Lairez, G. Zalczer and F. Cousin, Soft Matter, 2012, 8, 2638
DOI: 10.1039/C2SM07265C

Social activity

Search articles by author

Spotlight

Advertisements