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Updated: May 14, 2026

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Synthesis and characterization of a luminescent and fully rigid tetrakisimidazolium macrocycle
Hongjun Zhou1, Zhi Wang, Chao Gao
1Key Laboratory of Green Chemistry and Technology of Ministry of Education, and College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China.
Abstract:
A fully rigid tetrakisimidazolium macrocycle was synthesized in good yield for the first time through direct [2+2] cyclization. The structure was characterized by NMRs, MS and X-ray diffraction analysis. This cationic, fluorescent macrocycle with four hydrogen bond donors pointing inward the large and rigid cavity may serve as an anion receptor, a fluorescent material and a building block for supramolecular assembly.
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