Fluorescence-switching 2-D sheet structure formed by self-assembly of cruciform aromatic amphiphiles.
basic_science · Level V
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- Record sourced from PubMed, PMID 39905892.
- Also identified by DOI 10.1039/d4sm01542h.
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Abstract
We report that aromatic amphiphiles based on cruciform aromatic segments self-assemble into 2-D sheet structures in aqueous environments. Notably, the aromatic amphiphile based on a pyrene unit generates fluorescence-switching 2-D sheet structures. In a pH-neutral condition, the sheets show strong excimer emission. However, upon lowering the pH the excimer emission is quenched due to loosely-packed pyrene units. Subsequent return of pH to a neutral condition leads to full recovery of the excimer emission, indicative of fully-reversible fluorescence emission switching.