Related Experiment Video
Updated: May 31, 2026
08:40
Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
Published on: April 28, 2014
Solid-state nanostructured materials from self-assembly of a globular protein-polymer diblock copolymer
Carla S Thomas1, Matthew J Glassman, Bradley D Olsen
1Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
ACS Nano
|June 24, 2011
Summary
Researchers created novel protein-polymer nanostructures for bioelectronics. This self-assembly method enables precise protein nanopatterning, maintaining protein structure and function for advanced materials.
Area of Science:
- Materials Science
- Biotechnology
- Nanotechnology
Background:
- Protein-polymer block copolymers offer a versatile platform for creating advanced nanostructured materials.
- Precise control over protein arrangement is crucial for developing functional bioelectronic and biocatalytic devices.
Purpose of the Study:
- To demonstrate the self-assembly of three-dimensional solid-state nanostructures using a globular protein-polymer diblock copolymer.
- To explore the potential of these nanostructures for direct protein nanopatterning in bioapplications.
Main Methods:
- A mutant red fluorescent protein (mCherryS131C) was site-specifically conjugated to poly(N-isopropylacrylamide) to form a protein-polymer block copolymer.
- Self-assembly into bulk nanostructures was achieved via solvent evaporation, followed by solvent annealing.
- Small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), wide-angle X-ray scattering (WAXS), circular dichroism (CD), and UV-vis spectroscopy were used for characterization.
Main Results:
- Self-assembly yielded disordered lamellar or hexagonally perforated lamellar nanostructures, tunable by solvent selectivity.
- Solvent annealing promoted the formation of ordered lamellar structures with mCherry in a bilayer configuration.
- Protein secondary structure remained intact, and β-sheet spacing was unaffected; approximately 35% of the chromophore retained optical activity.
Conclusions:
- The study successfully demonstrates self-assembly of protein-polymer block copolymers into ordered 3D nanostructures.
- This method provides a viable route for direct nanopatterning of proteins, preserving their structural integrity.
- The resulting protein-based nanostructures hold promise for applications in bioelectronic and biocatalytic materials.
