DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Reversible Binding Interfaces Made of Microstructured Polymer Brushes

Journal Article · · Langmuir

The polymer brush architecture of the end-tethered polymer molecules is one of the most widely used efficient methods to regulate interfacial interactions in colloidal systems found in live matter and manufactured materials. Emerging applications of polymer brush structures require solutions to new tasks in the control of interfacial interactions. The rapid development of live cell manufacturing relies on scalable and efficient cell harvesting methods. Stimuli-responsive surfaces made of surface-grafted poly(N-isopropylacrylamide) (PNIPAM) can bind and detach the adherent cell upon changes in temperature and have been used for cell growth and harvesting. The applications are limited by the requirement to satisfy a range of PNIPAM coating characteristics that depend on the dimensions of the integrin complex in the cell membrane and the basal surface. The analysis of the microstructured surfaces, when adhesive and disjoining functions of the microdomains are decoupled, shows that many limitations of PNIPAM one-component coatings can be avoided by using a much broader range of structural characteristics of the microstructured interfaces composed of alternating disjoining PNIPAM domains and adhesive polymeric domains with cell-affinity functional groups. Temperature-controlled reversible adhesion to such microstructured interfaces is studied here experimentally with model systems of solid spherical particles and by employing simulations for solid and soft membranes interacting with the microstructured surfaces to mimic interactions with soft and solid disk-like particles.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2438657
Journal Information:
Langmuir, Journal Name: Langmuir Journal Issue: 13 Vol. 40; ISSN 0743-7463
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (32)

Stimuli-Responsive Colloidal Systems from Mixed Brush-Coated Nanoparticles journal August 2007
Preprogrammed Dynamic Microstructured Polymer Interfaces journal August 2019
Self-Cleaning and Anti-Fog Surfaces via Stimuli-Responsive Polymer Brushes journal November 2007
Specific Biochemical-to-Optical Signal Transduction by Responsive Thin Hydrogel Films Loaded with Noble Metal Nanoparticles journal March 2010
Refining of Particulates at Stimuli‐Responsive Interfaces: Label‐Free Sorting and Isolation journal December 2021
Cell sheet detachment affects the extracellular matrix: A surface science study comparing thermal liftoff, enzymatic, and mechanical methods journal August 2005
Responsive and patterned polymer brushes journal August 2013
Scaling Behavior of Nanopatterned Polymer Brushes journal January 2007
Fluorescent dyes for cell viability: an application on prefixed conditions journal March 2001
Stimuli-responsive LbL capsules and nanoshells for drug delivery journal August 2011
Thermally-triggered fabrication of cell sheets for tissue engineering and regenerative medicine journal January 2019
The use of mild trypsinization conditions in the detachment of endothelial cells to promote subsequent endothelialization on synthetic surfaces journal September 2007
Theoretical considerations on mechanisms of harvesting cells cultured on thermoresponsive polymer brushes journal July 2012
Cell detachment: Post-isolation challenges journal December 2013
Transiently thermally responsive surfaces: Concepts for cell sheet engineering journal December 2020
Stimuli-responsive nanoparticles, nanogels and capsules for integrated multifunctional intelligent systems journal January 2010
Smart thermoresponsive coatings and surfaces for tissue engineering: switching cell-material boundaries journal December 2007
Environmentally Responsive “Hairy” Nanoparticles:  Mixed Homopolymer Brushes on Silica Nanoparticles Synthesized by Living Radical Polymerization Techniques journal May 2005
Simulation of Grafted Polymers on Nanopatterned Surfaces journal October 2005
Dissipative particle dynamics simulation of the micellization–demicellization process and micellar shuttle of a diblock copolymer in a biphasic system (water/ionic-liquid) journal January 2012
Nanopatterned antimicrobial enzymatic surfaces combining biocidal and fouling release properties journal January 2014
Stimuli-responsive Pickering emulsions: recent advances and potential applications journal January 2015
Control of cell detachment in a microfluidic device using a thermo-responsive copolymer on a gold substrate journal January 2007
Polymeric and biomacromolecular brush nanostructures: progress in synthesis, patterning and characterization journal January 2008
Patterned polymer brushes journal January 2012
Dissipative particle dynamics: Bridging the gap between atomistic and mesoscopic simulation journal September 1997
The Effects of Isolation on Chondrocyte Gene Expression journal September 2006
Lateral versus Perpendicular Segregation in Mixed Polymer Brushes journal January 2002
Trypsin-induced proteome alteration during cell subculture in mammalian cells journal January 2010
Statistical Mechanics of Dissipative Particle Dynamics journal May 1995
Thermoresponsive Polymers for Biomedical Applications journal August 2011
Modelling thermoresponsive polymer brush by mesoscale computer simulations journal January 2023