A novel heteroditopic porphyrin-based ion pair receptor with four ureas and four triazoles on the same side of the porphyrin ring was synthesized through click chemistry. This receptor showed high affinity to complex with the ion pairs KCl, NaCl and NH₄Cl in 1:1 binding stoichiometries with association constants of 2.48 (± 0.43) × 10⁴, 1.06 (± 0.02) × 10⁵, and 1.97 (± 0.04) × 10⁵ M${}^{-1}$, respectively. After complexation with the ion pairs, fluorescence quenching of the porphyrin was observed, which enables its potential applications in ion detection.

中文翻译：

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通过点击化学构建的基于卟啉的离子对受体

通过点击化学合成了一种新型异二位卟啉离子对受体，在卟啉环的同一侧有四个脲和四个三唑。该受体在 1:1 结合化学计量中与离子对 KCl、NaCl 和 NH ₄ Cl 的复合物表现出高亲和力，缔合常数为 2.48 (± 0.43) × 10 ⁴、1.06 (± 0.02) × 10 ⁵和 1.97 (± 0.02) × 10 5 。 0.04)× 10 ^5M${}^{-1}$， 分别。与离子对络合后，观察到卟啉的荧光猝灭，这使其在离子检测中具有潜在的应用前景。