Self-assembly of aramid amphiphiles into ultra-stable nanoribbons and aligned nanoribbon threads

Abstract

induced scission measurements, imaging with AFM and TEM, and analysis of data. A.J.L. performed FRET measurements and analysis of the data. X.Z., T.C.-T., and Y.C. performed solution X-ray scattering, and analysis of the data. A.J.L. and Y.C. conceptualized nanoribbon thread processing and Y.C. and M.G. prepared nanoribbon threads. M.G. performed tensile testing of nanoribbon threads and analysis of the data. T.C.-T. and Y.C. performed X-ray scattering of solid-state nanoribbon threads and analysis of the data. J.

Effects of molecular flexibility and head group repulsion on aramid amphiphile self-assembly

“…[11][12][13] One such design motif is the aramid amphiphile (AA), which produces unusually stable self-assembled nanostructures by incorporating aromatic amide (aramid) domains into the molecular structure. [14][15][16] The prototypical AA is composed of a charged head group, a triaramid structural domain, and a short aliphatic tail (Fig. 1).…”

“…1). 14 When added to water, these AAs spontaneously self-assemble to form high aspectratio nanoribbons with 4 nm thicknesses, 5 nm widths, and 20+ µm lengths. The aramid structural domain imparts strong and collective hydrogen bonding down the long axis of the nanoribbon, while π-π stacking is responsible for lateral cohesion.…”

Dynamics in supramolecular nanomaterials

“…al. presents small-molecule amphiphiles which form ultra-stable structures in water by completely suppressing molecular exchange 131 . Non-covalent intermolecular interactions in supramolecular systems dictate the dynamics and local stateof-matter, as mentioned above.…”

Preparation of a Cage-Type Polyglycolic Acid/Collagen Nanofiber Blend with Improved Surface Wettability and Handling Properties for Potential Biomedical Applications

“…PGA/collagen nanofiber-based scaffolds have very good cell adhesion and cell growth properties but are not sufficient for other practical applications, such as bleeding control during surgeries [18][19][20][21][22][23][24][25], material flexibility and easy handling during surgeries [19][20][21][22]. These critical issues during surgeries can be addressed by modifying the surface and handling properties [22][23][24][25][26][27][28][29][30].…”

“…Therefore, a blended composition is necessary to impart suitable surface properties onto the optimized nanofibers in order to achieve an ease in handling and the ability to control severe bleeding during surgical operations [24,25,27].…”