Issue 8, 2018

Determination of the packing model of a supramolecular nanofiber via mass-per-length measurement and de novo simulation

Abstract

Herein, we report an example of using scanning transmission electron microscopy to determine the mass-per-length of supramolecular nanofibers. Together with the measurement of the diameter of nanofibers via transmission electron microscopy, we could estimate the packing density of assembling molecules along the nanofibers. A parallel unbiased de novo simulation screens and reveals the most plausible molecular packing pattern of small molecules along the supramolecular nanofibers. Remarkably, the simulated packing patterns and density correlate well with the experimental measurements. Unexpectedly, the naphthalene groups are likely facing outward, creating a hydrophobic surface, which is driven by the geometry of the hydrogelator molecule. Overall, this study establishes a complementary method to determine molecular arrangement along the supramolecular nanofibers, which is potentially useful for the guidance of rational design of biomaterials based on self-assembly.

Graphical abstract: Determination of the packing model of a supramolecular nanofiber via mass-per-length measurement and de novo simulation

Supplementary files

Article information

Article type
Paper
Submitted
02 Jän 2018
Accepted
25 Jän 2018
First published
25 Jän 2018

Nanoscale, 2018,10, 3990-3996

Determination of the packing model of a supramolecular nanofiber via mass-per-length measurement and de novo simulation

Q. Yao, Q. Bao, X. Li, H. Wang, Z. Yang, X. Shi, Y. Gao and B. Xu, Nanoscale, 2018, 10, 3990 DOI: 10.1039/C8NR00031J

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