Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/4920
Title: Nonclassical Crystal Growth of Supramolecular Polymers in Aqueous Medium
Authors: Elizebath, D
Lim, J H
Nishiyama, Y
Vedhanarayanan, B
Saeki, A
Ogawa, Y
Praveen, V K
Issue Date: Feb-2024
Publisher: Wiley Online Library
Citation: Small; 20(6):2306175
Abstract: A mechanistic understanding of the principles governing the hierarchical organization of supramolecular polymers offers a paradigm for tailoring synthetic molecular architectures at the nano to micrometric scales. Herein, the unconventional crystal growth mechanism of a supramolecular polymer of superbenzene(coronene)-diphenylalanine conjugate (Cr-FFOEt) is demonstrated. 3D electron diffraction (3D ED), a technique underexplored in supramolecular chemistry, is effectively utilized to gain a molecular-level understanding of the gradual growth of the initially formed poorly crystalline hairy, fibril-like supramolecular polymers into the ribbon-like crystallites. The further evolution of these nanosized flat ribbons into microcrystals by oriented attachment and lateral fusion is probed by time-resolved microscopy and electron diffraction. The gradual morphological and structural changes reveal the nonclassical crystal growth pathway, where the balance of strong and weak intermolecular interactions led to a structure beyond the nanoscale. The role of distinct π-stacking and H-bonding interactions that drive the nonclassical crystallization process of Cr-FFOEt supramolecular polymers is analyzed in comparison to analogous molecules, Py-FFOEt and Cr-FF forming helical and twisted fibers, respectively. Furthermore, the Cr-FFOEt crystals formed through nonclassical crystallization are found to improve the functional properties.
URI: https://onlinelibrary.wiley.com/doi/10.1002/smll.202306175
http://localhost:8080/xmlui/handle/123456789/4920
Appears in Collections:2024

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