Lee Jeong Heon, Hong Kyeong-Im, Choi Woo Hyeok, Kim Younghun, Jang Woo-Dong
Department of Chemistry Yonsei University Seodaemun-Gu Seoul Korea.
Smart Mol. 2023 Mar 20;1(2):e20220004. doi: 10.1002/smo.20220004. eCollection 2023 Sep.
A series of triazole-bearing oligo(ethylene glycol)-strapped zinc porphyrins ( and ) have been prepared as artificial ion-binding receptors. Both and exhibit UV/Vis absorption changes in a solvent-dependent manner upon titration with halides and alkali metal ions. In tetrahydrofuran, both and exhibit spectral shifts upon the addition of halide ions through axial coordination, whereas the absorption does not change upon the addition of alkali metal ions. On the other hand, in 10% MeCN/CHCl, the UV/Vis absorption spectra of both and do not change upon the addition of an excess amount of halide ions; however, and show selective alkali metal ion-binding properties in this solvent. and display dramatic color changes and spectral shifts upon the addition of Li and K, respectively. Because of the dramatic color changes that occurred upon binding, the determination of alkali metal ions would be possible.
一系列带有三唑基的聚乙二醇连接的锌卟啉（ 和 ）已被制备为人造离子结合受体。在用卤化物和碱金属离子滴定后， 和 均以溶剂依赖的方式表现出紫外/可见吸收变化。在四氢呋喃中， 和 加入卤离子后通过轴向配位均表现出光谱位移，而加入碱金属离子时吸收不变。另一方面，在10%乙腈/氯仿中，加入过量卤离子时 和 的紫外/可见吸收光谱不变；然而， 和 在该溶剂中表现出选择性碱金属离子结合特性。加入Li和K时， 和 分别表现出显著的颜色变化和光谱位移。由于结合时发生显著的颜色变化，因此有可能测定碱金属离子。
