Impact of a subtle structural difference on the kinetic behavior of metastable supramolecular assemblies

Molecular self-assembly under kinetic control has many opportunities leading to novel phenomena and applications. However, a mechanistic insight into the intricate kinetic behavior is still lacking. Herein, we demonstrate that even a subtle change in the molecular structure affects the kinetic behav...

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Bibliographic Details
Published in:Polymer (Guilford) 2017-10, Vol.128, p.311-316
Main Authors: Fukui, Tomoya, Takeuchi, Masayuki, Sugiyasu, Kazunori
Format: Article
Language:English
Subjects:
Assemblies
Behavioral sciences
Kinetics
Molecular structure
Pathway complexity
Porphyrins
Self-assembly
Supramolecular assemblies
Supramolecular polymerization
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Summary:Molecular self-assembly under kinetic control has many opportunities leading to novel phenomena and applications. However, a mechanistic insight into the intricate kinetic behavior is still lacking. Herein, we demonstrate that even a subtle change in the molecular structure affects the kinetic behavior of metastable supramolecular assembles. Interestingly, the kinetic process influenced the size of the final outcomes (in this study, nanosheet structures) in a manner opposite to that predicted by the thermodynamic model. Our findings illustrate the difference between thermodynamically and kinetically controlled molecular self-assemblies. We believe that this study will expand the potential applications of molecular self-assemblies. [Display omitted] •Transformation kinetics of metastable supramolecular assembles was investigated.•We found that only a subtle alternation in molecular structure affects the kinetics.•We found that the size of the final outcome was determined kinetically.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2016.12.027