4.1 Article

Supramolecular spheres assembled from covalent and supramolecular dendritic crowns dictate the supramolecular orientational memory effect mediated by Frank-Kasper phases

Journal

GIANT
Volume 1, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.giant.2020.100001

Keywords

Frank-Kasper phases; Supramolecular orientational memory; Conical and crown dendrons and dendrimers; Distorted dodecahedral architecture; Discriminating mechanisms

Funding

  1. National Science Foundation [DMR-1066116, DMR-1807127, DMR-1720530]
  2. P. Roy Vagelos Chair at the University of Pennsylvania
  3. Howard Hughes Medical Institute
  4. NSF MRI [17-25969]
  5. ARO DURIP grant [W911NF-17-1-0282]
  6. University of Pennsylvania
  7. Laboratory for Research on the Structure of Matter at the University of Pennsylvania [NSF MRSEC 17-20530]

Ask authors/readers for more resources

A supramolecular orientational memory (SOM) effect that provides access to complex columnar hexagonal architectures that cannot be designed by any other methodology was recently reported by our laboratory. This SOM concept is encountered upon heating and cooling a hexagonal columnar periodic array via a Frank-Kasper phase that is generated from supramolecular spheres. Here, a library of twenty-four supramolecular spheres self-organizing into Frank-Kasper phases and columnar hexagonal arrays was investigated for SOM. Twenty of these supramolecular spheres, that were self-assembled from conical shaped dendrons, did not exhibit SOM. The four supramolecular spheres assembled from covalent and supramolecular dynamic crowns displayed SOM. The supramolecular dynamic crowns forming spheres by a strong and directional H-bonding process, generated via SOM, a previously unencountered distorted dodecahedral architecture constructed from hexagonally ordered supramolecular columns. Therefore, SOM can discriminate between mechanisms of self-assembly of supramolecular spheres, a process that cannot be accomplished by analysis with X-ray diffraction methods alone. These results will facilitate access to the design of new complex columnar hexagonal and other periodic columnar array architectures via SOM.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.1
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available