the axle and wheel. The [2]rotaxane with a B24C6 wheel shows a difference in fluorescence between the charged and neutral species, while the [2]rotaxane with a DMB24C6 wheel exhibits a difference in color between the charged and neutral compounds. These changes in optical properties can be attributed to the structural differences in the co-conformations of the [2]rotaxane as they adapt to the changes
设计了一系列的六个[2]轮烷分子穿梭体,其中包含带有苯并双(
咪唑)核的轴(呈中性或指示性)和单个24元冠状醚轮(24C6,B24C6或
DMB24C6),并确定环沿轴的穿梭率。由于轴和车轮之间非共价相互作用的增加,带电版本的穿梭速度要慢得多。带B24C6轮的[2]轮烷显示带电和中性物质之间的荧光差异,而带
DMB24C6轮的[2]轮烷显示带电和中性化合物之间的颜色差异。光学性质的这些变化可归因于[2]轮烷的共构型的结构差异,因为它们适应了酸/碱
化学性质的变化。