The spectrophotometric study of a fluorescence-enhanced inclusion complex Threaded with β-cyclodextrin: Synthesis and characterization

A novel achiral monomer end-capped with a phenyl-[1,3,4]oxadiazolyl group and threaded through β-cyclodextrin was synthesized to investigate the host-guest interactions in the inclusion complex. ¹H NMR studies revealed that one or two eyclodextrin molecules were threaded onto the synthesized achiral monomer, leading to the formation of a fibrous construction of self-assembled inclusion complexes. The formation of a self-assembled inclusion complex was identified using SEM and TEM. The highly ordered alignment of selfassembled supramolecules was confirmed using polarized optical microscopy. We demonstrate an easy process for the fabrication of nano-structured self-assembled inclusion complexes in pyridine/ethanol (1 mL/10 mL) as well as the enhancement of photo-induced fluorescence via monomers end-capped with a phenyl-[1,3,4]oxadiazolyl moiety threaded with β-cyclodextrins.