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.
Funder
National Natural Science Foundation of China
Guizhou Science and Technology Department
Cited by
2 articles.
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1. Synthesis and Properties of a New Sulfonamide Modified Hemicucurbituril;Russian Journal of General Chemistry;2023-07
2. Synthesis of multi-hybrid hemicucurbiturils;Journal of Inclusion Phenomena and Macrocyclic Chemistry;2023-01-17