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Synthesis of a novel aminobenzene-containing hemicucurbituril and its fluorescence spectral properties with ions.

ABSTRACT: A novel hemicucurbituril-based macrocycle, alternately consisting of amidobenzene and 2-imidazolidione moieties was designed and synthesized. Based on the fragment coupling strategy, nitrobenzene-containing hemicucurbituril was firstly prepared facilely under alkaline environment, and reduction of the nitro groups produced the desired amidobenzene-containing hemicucurbituril. As an original fluorescent chemosensor, it exhibited strong interactions with Fe³⁺ over other metal cations. The experimental evidence of fluorescence spectra suggested that a 1:1 complex was formed between this macrocycle and Fe³⁺ with an association constant up to (2.1 ± 0.3) × 10⁴ M^-1. Meanwhile, this macrocycle showed no obvious or only slight enhancement of the fluorescence intensity with selected anions.

SUBMITTER: Zeng Q

PROVIDER: S-EPMC8685562 | biostudies-literature |

REPOSITORIES: biostudies-literature

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