作者:Britta Hesseler、Melanie Zindler、Rainer Herges、Ulrich Lüning
DOI:10.1002/ejoc.201402249
日期:2014.6
A [2]rotaxane shuttle for (light-driven) proton transport has been designed and synthesized. The rotaxane contains a macrocyclic ring that carries a pyridine nitrogen atom as a basic center to bind and to transport a proton. The axis includes an amide binding site for the macrocycle and a positive charge in close vicinity. Upon protonation of the pyridine nitrogen atom, the hydrogen bond is broken
已经设计并合成了用于(光驱动)质子传输的 [2] 轮烷穿梭机。轮烷含有一个大环,它带有一个吡啶氮原子作为基本中心来结合和传输质子。该轴包括大环的酰胺结合位点和紧邻的正电荷。吡啶氮原子质子化后,氢键断裂,质子化吡啶与轴上的永久正电荷之间的库仑排斥力将质子化大环推向轴的另一端。通过改变 pH 值,环可以来回穿梭。它在轴上的位置由核磁共振光谱确定。