Temperature-Controlled Pathway Complexity in Self-Assembly of Perylene Diimide-Polydiacetylene Supramolecule
- Authors
- Seo, Joonsik; Khazi, Mohammed Iqbal; Bae, Kwangmin; Kim, Jong-Man
- Issue Date
- May-2023
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- pathway complexity; self-assembly; perylene diimide; polydiacetylene; kinetic and thermodynamic pathway
- Citation
- SMALL, v.19, no.18, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- SMALL
- Volume
- 19
- Number
- 18
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191072
- DOI
- 10.1002/smll.202206428
- ISSN
- 1613-6810
- Abstract
- Self-assembly process represents one of the most powerful and efficient methods for designing functional nanomaterials. For generating optimal functional materials, understanding the pathway complexity during self-assembly is essential, which involves the aggregation of molecules into thermodynamically or kinetically favored pathways. Herein, a functional perylene diimide (PDI) derivative by introducing diacetylene (DA) chains (PDI-DA) is designed. Temperature control pathway complexity with the evolution of distinct morphology for the kinetic and thermodynamic product of PDI-DA is investigated in detail. A facile strategy of UV-induced polymerization is adopted to trap and capture metastable kinetic intermediates to understand the self-assembly mechanism. PDI-DA showed two kinetic intermediates having the morphology of nanosheets and nanoparticles before transforming into the thermodynamic product having fibrous morphology. Spectroscopic studies revealed the existence of distinct H- and J-aggregates for kinetic and thermodynamic products respectively. The polymerized fibrous PDI-DA displayed reversible switching between J-aggregate and H-aggregate.
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