High aspect ratio nanotubes assembled from macrocyclic iminium salts
Abstract
The distinct properties of one-dimensional nanomaterials, such as carbon nanotubes and actin filaments, emerge from their high aspect ratios. Stacking macrocycles into nanotubes represents a potentially powerful design strategy to access synthetic nanotubes, but such noncovalent assemblies are typically too weak to support individual, high aspect ratio structures. We report hexagonal macrocycles that exhibit strong electrostatic stacking upon protonation of their imine linkages. The resulting nanotubes form lyotropic phases and align in flow, a hallmark of high aspect ratio structures. The iminium-linked macrocycle assemblies form and disassemble reversibly in the presence of bases and acids, and are stabilized by covalent cross-linking.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 21, 2018
- Source ID
- 10.1073/pnas.1809383115
Entities
People
- Anton D. Chavez
- Austin M Evans
- Boris Harutyunyan
- Chao Sun
- Mark Hersam
- Meng Shen
- Michael Bedzyk
- Monica Olvera de la Cruz
- Nathan C Flanders
- William Dichtel
- Xiaolong Liu
Organizations
- Army Research Office
- Cornell University
- National Science Foundation
- Northwestern University
- Office of Basic Energy Sciences
- United States Department of Energy