Tubes or sheets: divergent aggregation pathways of an amphiphilic 2,7-substituted pyrene trimer

Abstract

The self-assembly of an amphiphilic 2,7-linked pyrene trimer in an aqueous environment into two morphologically related forms is described. Supramolecular polymerization leads to the simultaneous formation of nanosheets and nanotubes.

Light‐Harvesting Nanotubes Formed by Supramolecular Assembly of Aromatic Oligophosphates

“…[42] In previous work we described the formation of one-dimensional, light-harvesting supramolecular polymers from aromatic oligophosphates. [44][45][46] Here, we describe the formation of light-harvesting supramolecular nanotubes from 2,7-linked oligophenanthrenes doped with pyrene acceptor chromophores. [44][45][46] Here, we describe the formation of light-harvesting supramolecular nanotubes from 2,7-linked oligophenanthrenes doped with pyrene acceptor chromophores.…”

“…This corresponds to ad ouble-layer of p-stacked phenanthrenes formed by the deposition of supramolecular tubes on the surface. Notably,polymerization of oligomer 1 exclusively results in the formation of tubular objects.T his is in contrast to findings with trimers of the iso-structural 2,7-pyrene, [46] which leads to the simultaneous formation of nanosheets and nanotubes. Thet ubular morphology of the nanostructures was confirmed by transmission electron microscopy (TEM) experiments ( Figure 3B).…”

“…[43] These linear polymers were formed of 3,6-substituted phenanthrene oligomers.T he use of 2dimensional (2D) polymers would allow extending considerably the number of structurally organized, energy collecting chromophores.T he assembly of 2D polymers was demonstrated with 1,6-and 2,7-linked pyrene oligomers. [44][45][46] Here, we describe the formation of light-harvesting supramolecular nanotubes from 2,7-linked oligophenanthrenes doped with pyrene acceptor chromophores.…”

“…This corresponds to ad ouble-layer of p-stacked phenanthrenes formed by the deposition of supramolecular tubes on the surface. [46] The diameter of the nanotubes varies in the range of 50-150 nm (Supporting Information). Thet ubular morphology of the nanostructures was confirmed by transmission electron microscopy (TEM) experiments ( Figure 3B).…”

Silica Mineralization of DNA‐Inspired 1D and 2D Supramolecular Polymers

“…For this purpose, we took advantage of the supramolecular polymerization of short aromatic oligophosphates . These self‐assembled structures appear as one‐ or two‐dimensional objects sharing common structural features—a hydrophobic core of aromatic chromophores shielded from the aqueous environment by a network of negatively charged phosphates . Here, we propose a strategy to access fibrillar and planar hybrid materials from polyanionic supramolecular polymers.…”