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Title: In Situ Infrared Ellipsometry for Protein Adsorption Studies on Ultrathin Smart Polymer Brushes in Aqueous Environment

Journal Article · · ACS Applied Materials and Interfaces
DOI:https://doi.org/10.1021/am5075997· OSTI ID:1286795
 [1];  [1];  [1];  [2];  [2];  [2];  [2];  [3];  [3];  [4];  [5];  [6];  [1]
  1. Leibniz Inst. for Analytical sciences (ISAS), Berlin (Germany)
  2. Leibniz Inst. of Polymer Research (IPF), Dresden (Germany)
  3. Clemson Univ., SC (United States). School of Materials Science and Engineering
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry and of Chemical Engineering
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  6. Univ. of Georgia, Athens, GA (United States). Dept. of Chemistry

The protein-adsorbing and -repelling properties of various smart nanometer-thin polymer brushes with high potential for biosensing and biomedical applications are studied by in-situ infrared-spectroscopic ellipsometry (IRSE). IRSE as a highly sensitive non-destructive technique allows us to investigate protein adsorption on polymer brushes in aqueous environment in dependence of external stimuli like temperature and pH. These stimuli are, for instance, relevant in switchable mixed brushes containing poly(N-isopropyl acrylamide) and poly(acrylic acid), respectively. We use such brushes as model surfaces for controlling protein adsorption of human serum albumin and human fibrinogen. IRSE can distinguish between polymer-specific vibrational bands, which yield insights into the hydration state of the brushes, and changes in the protein-specific amide bands, which are related to changes of the protein secondary structure.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC); German Research Foundation (DFG); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; DMR-1107786; DFG HI 793/4-1
OSTI ID:
1286795
Journal Information:
ACS Applied Materials and Interfaces, Vol. 7, Issue 23; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (8)

Controlling Protein Adsorption through Nanostructured Polymeric Surfaces journal November 2017
Comb-like temperature-responsive polyhydroxyalkanoate-graft-poly(2-dimethylamino-ethylmethacrylate) for controllable protein adsorption journal January 2016
Broadband infrared Mueller-matrix ellipsometry for studies of structured surfaces and thin films journal January 2018
Preprogrammed Dynamic Microstructured Polymer Interfaces journal August 2019
A Novel Soft Contact Piezo-Controlled Liquid Cell for Probing Polymer Films under Confinement using Synchrotron FTIR Microspectroscopy journal December 2018
Topological Indices Study of Molecular Structure in Anticancer Drugs journal January 2016
Targeted grafting of thermoresponsive polymers from a penetrative honeycomb structure for cell sheet engineering journal January 2015
Swelling of thin polymer films: understanding the mechanisms and dynamics dissertation January 2019