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Title: 3D Printing of Supramolecular Polymer Hydrogels with Hierarchical Structure

Journal Article · · Small
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [3]; ORCiD logo [3];  [4]; ORCiD logo [4];  [5];  [5]; ORCiD logo [5]; ORCiD logo [1]
  1. Northwestern Univ., Evanston, IL (United States); Northwestern Univ., Chicago, IL (United States)
  2. Northwestern Univ., Chicago, IL (United States)
  3. Northwestern Univ., Evanston, IL (United States)
  4. Wright Patterson Air Force Base, Dayton, OH (United States); UES, Inc., Dayton, OH (United States)
  5. Wright Patterson Air Force Base, Dayton, OH (United States)

Liquid crystalline hydrogels are an attractive class of soft materials to direct charge transport, mechanical actuation, and cell migration. When such systems contain supramolecular polymers, it is possible in principle to easily shear align nanoscale structures and create bulk anisotropic properties. However, reproducibly fabricating and patterning aligned supramolecular domains in 3D hydrogels remains a challenge using conventional fabrication techniques. Here, a method is reported for 3D printing of ionically crosslinked liquid crystalline hydrogels from aqueous supramolecular polymer inks. Using a combination of experimental techniques and molecular dynamics simulations, it is found that pH and salt concentration govern intermolecular interactions among the self-assembled structures where lower charge densities on the supramolecular polymers and higher charge screening from the electrolyte result in higher viscosity inks. Enhanced hierarchical interactions among assemblies in high viscosity inks increase the printability and ultimately lead to greater nanoscale alignment in extruded macroscopic filaments when using small nozzle diameters and fast print speeds. The use of this approach is demonstrated to create materials with anisotropic ionic and electronic charge transport as well as scaffolds that trigger the macroscopic alignment of cells due to the synergy of supramolecular self-assembly and additive manufacturing.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Bio-Inspired Energy Science (CBES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0000989; AC02‐06CH11357
OSTI ID:
1823087
Alternate ID(s):
OSTI ID: 1804819; OSTI ID: 1846607
Journal Information:
Small, Vol. 17, Issue 5; ISSN 1613-6810
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (70)

Directed Assembly of Hybrid Nanomaterials and Nanocomposites journal March 2018
3D Printing of Liquid Crystal Elastomeric Actuators with Spatially Programed Nematic Order journal January 2018
Biomimetic 4D printing journal January 2016
Micropatterning of bioactive self-assembling gels journal January 2009
Self-assembly of peptide amphiphiles: From molecules to nanostructures to biomaterials journal January 2010
Liquid crystalline properties of solutions of persistent polymer chains journal June 1991
Covalent-supramolecular hybrid polymers as muscle-inspired anisotropic actuators journal June 2018
Multi-Scale Assembly of Polythiophene-Surfactant Supramolecular Complexes for Charge Transport Anisotropy journal January 2017
Nanofluidic Ion Transport through Reconstructed Layered Materials journal September 2012
Self-Assembly and Mineralization of Peptide-Amphiphile Nanofibers journal November 2001
Functional Supramolecular Polymers journal February 2012
Aligned Macroscopic Domains of Optoelectronic Nanostructures Prepared via Shear-Flow Assembly of Peptide Hydrogels journal October 2011
Hydrodynamic alignment and assembly of nanofibrils resulting in strong cellulose filaments journal June 2014
Nonionic amphiphile nanoarchitectonics: self-assembly into micelles and lyotropic liquid crystals journal April 2015
Rheological Equations from Molecular Network Theories journal March 1972
Exploring the sequence space for (tri-)peptide self-assembly to design and discover new hydrogels journal December 2014
Tubular hydrogels of circumferentially aligned nanofibers to encapsulate and orient vascular cells journal August 2012
Supramolecular biomaterials journal December 2015
Hydrophobic interactions of peptides with membrane interfaces journal November 1998
Hierarchical and Heterogeneous Bioinspired Composites-Merging Molecular Self-Assembly with Additive Manufacturing journal June 2017
Hierarchical nanostructured conducting polymer hydrogel with high electrochemical activity journal May 2012
The MARTINI Coarse-Grained Force Field: Extension to Proteins journal April 2008
Encapsulation of curcumin in self-assembling peptide hydrogels as injectable drug delivery vehicles journal September 2011
Energy landscapes and functions of supramolecular systems journal January 2016
GROMACS: High performance molecular simulations through multi-level parallelism from laptops to supercomputers journal September 2015
Gd(III)-Labeled Peptide Nanofibers for Reporting on Biomaterial Localization in Vivo journal June 2014
Orientation of charged clay nanotubes in evaporating droplet meniscus journal February 2015
Three-dimensional printing of complex biological structures by freeform reversible embedding of suspended hydrogels journal October 2015
Bioprinting: 3D Bioprinting of Vascularized, Heterogeneous Cell-Laden Tissue Constructs (Adv. Mater. 19/2014) journal May 2014
Intermolecular Forces in the Self-Assembly of Peptide Amphiphile Nanofibers journal March 2006
Peptide-amphiphile nanofibers: A versatile scaffold for the preparation of self-assembling materials journal April 2002
A bioactive self-assembled membrane to promote angiogenesis journal February 2011
Modeling the Self-Assembly of Peptide Amphiphiles into Fibers Using Coarse-Grained Molecular Dynamics journal January 2012
Direct-Write Assembly of 3D Silk/Hydroxyapatite Scaffolds for Bone Co-Cultures journal May 2012
Improved Parameters for the Martini Coarse-Grained Protein Force Field journal November 2012
Self-assembling hydrogel scaffolds for photocatalytic hydrogen production journal October 2014
Aligned neurite outgrowth and directed cell migration in self-assembled monodomain gels journal January 2014
Three-dimensional printing of hierarchical liquid-crystal-polymer structures journal September 2018
Dynamics of Cellulose Nanocrystal Alignment during 3D Printing journal June 2018
Supramolecular Energy Materials journal March 2020
Expanding the Nanoarchitectural Diversity Through Aromatic Di- and Tri-Peptide Coassembly: Nanostructures and Molecular Mechanisms journal August 2016
Converging flow of polymer melts in extrusion dies journal January 1972
3D nanostructured conductive polymer hydrogels for high-performance electrochemical devices journal January 2013
Molecular dynamics simulations reveal disruptive self-assembly in dynamic peptide libraries journal January 2017
Injectable biomimetic liquid crystalline scaffolds enhance muscle stem cell transplantation journal September 2017
Synthesis and Alignment of Discrete Polydiacetylene-Peptide Nanostructures journal January 2012
Additive manufacturing of biologically-inspired materials journal January 2016
Review article: Fabrication of nanofluidic devices journal March 2013
The Powerful Functions of Peptide-Based Bioactive Matrices for Regenerative Medicine journal November 2014
Dopant-Enabled Supramolecular Approach for Controlled Synthesis of Nanostructured Conductive Polymer Hydrogels journal October 2015
Nanostructured scaffolds for bone tissue engineering journal February 2013
Direct-Write Assembly of 3D Hydrogel Scaffolds for Guided Cell Growth journal June 2009
Assembly of Viral Hydrogels for Three-Dimensional Conducting Nanocomposites journal April 2014
25th Anniversary Article: Supramolecular Materials for Regenerative Medicine journal February 2014
A self-assembly pathway to aligned monodomain gels journal June 2010
The MARTINI Force Field:  Coarse Grained Model for Biomolecular Simulations journal July 2007
Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures journal October 2017
Liquid crystal phase formation by biopolymers journal January 2010
Tuning supramolecular mechanics to guide neuron development journal July 2013
pH and Amphiphilic Structure Direct Supramolecular Behavior in Biofunctional Assemblies journal October 2014
Supramolecular Packing Controls H 2 Photocatalysis in Chromophore Amphiphile Hydrogels journal November 2015
Cellulose Nanocrystal Inks for 3D Printing of Textured Cellular Architectures journal February 2017
Transforms and Operators for Directional Bioimage Analysis: A Survey book May 2016
Avogadro: an advanced semantic chemical editor, visualization, and analysis platform journal August 2012
Crystal-Phase Transitions and Photocatalysis in Supramolecular Scaffolds journal April 2017
Transition from Bioinert to Bioactive Material by Tailoring the Biological Cell Response to Carboxylated Nanocellulose journal February 2016
Direct Ink Writing of 3D Functional Materials journal November 2006
VMD: Visual molecular dynamics journal February 1996
Understanding anisotropic transport in self-assembled membranes and maximizing ionic conductivity by microstructure alignment journal January 2013
Impact of charge switching stimuli on supramolecular perylene monoimide assemblies journal January 2019