Synthesis of Nanometer Sized Bis- and Tris-trityl Model Compounds with Different Extent of Spin–Spin Coupling
作者:J. Jassoy、Andreas Meyer、Sebastian Spicher、Christine Wuebben、Olav Schiemann
DOI:10.3390/molecules23030682
日期:——
Tris(2,3,5,6-tetrathiaaryl)methyl radicals, so-called trityl radicals, are emerging as spin labels for distance measurements in biological systems based on Electron Paramagnetic Resonance (EPR). Here, the synthesis and characterization of rigid model systems carrying either two or three trityl moieties is reported. The monofunctionalized trityl radicals are connected to the molecular bridging scaffold
三(2,3,5,6-四硫杂芳基)甲基自由基,即所谓的三苯甲基自由基,正在成为基于电子顺磁共振 (EPR) 的生物系统中距离测量的自旋标记。在这里,报告了携带两个或三个三苯甲基部分的刚性模型系统的合成和表征。单官能化的三苯甲基自由基通过使用 Mukaiyama 试剂 2-氯甲基吡啶鎓碘化物的酯化反应连接到分子桥接支架上。双和三三苯甲基化合物表现出不同的自旋间距、电子-电子交换强度和偶极耦合,并且可以产生多自旋效应。它们将作为比较 EPR 距离测量方法的基准系统。