A novel luminous macrocyclic arene, named tetraphenylethylene[3]arene 1, was conveniently synthesized by Lewis acid-promoted one-pot condensation of 1,1′,4,4′-tetramethoxytetraphenylethylene and paraformaldehyde in dichloromethane at room temperature. 1 showed a unique stretched hexagon structure and exhibited strong bright blue fluorescence both in the solid state and THF–H₂O mixtures with water f_w ≥ 60%. In particular, it was found that 1 exhibited exceptional performance in selective sensing of I⁻ ions among other anions such as AcO⁻, NO₃⁻, ClO₄⁻, HSO₄⁻, F⁻, Cl⁻, Br⁻, PF₆⁻, H₂PO₄⁻, BF₄⁻ and CO₃F₃S⁻.

中文翻译：

---

四苯乙烯[3]芳烃：I− 的合成、结构和传感

在路易斯酸促进下，1,1',4,4'-四甲氧基四苯乙烯和多聚甲醛在二氯甲烷中于室温下一锅缩合，方便地合成了一种新型发光大环芳烃，命名为四苯乙烯[3]芳烃1 。 1显示出独特的拉伸六边形结构，并且在固态和THF-H ₂ O与水f _w ≥ 60%的混合物中均表现出强烈的亮蓝色荧光。特别是，我们发现1在选择性传感AcO ^-、NO ₃ ^-、ClO ₄ ^-、HSO ₄ ^-、F ^-、Cl ^-、Br ^-、PF ₆ ^-等其他阴离子中的I ^-离子方面表现出优异的性能。 、H ₂ PO ₄ ^-、BF ₄ ^-和CO ₃ F ₃ S ^-。