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Figure 3. (A) Schematic showing the insertion of DAST guest molecules into the cavities of HPβCD hosts. (B) The correlation spectroscopy (COSY) NMR of DAST@HPβCD supramolecular host-guest inclusion complex. (C) Potential energy diagram and corresponding excited-state conversion of DAST@HPβCD fibers. The TA contour plots of (D) DAST and (E) DAST@HPβCD samples. (F) Fluorescence image of DAST@HPβCD thin film. (G) Schematic illustration of 1PEF/2PEF/3PEF and SHG properties of DAST@HPβCD fibers and their application in bio-imaging of E. coli. Readapted with permission^[10]. Copyright © 2023 Springer Nature Limited.