Two donor–acceptor thread-like compounds incorporating viologen (V2+) units and 1,5-dihydroxynaphthalene (DNP) stations have been prepared. Their ability to form self-assembled charge-transfer (CT) complexes with cucurbit[8]uril (CB[8]) is evidenced by UV-Vis and NMR spectroscopies, as well as by mass spectrometry. Binding studies show the formation of 1 : 1 and 2 : 1 complexes between CB[8] and a thread-like compound containing two viologen units, while only a 1 : 1 inclusion complex was observed between CB[8] and a thread-like compound containing only a single viologen unit. The switching behavior of the threads within their pseudorotaxane frameworks was investigated by using cyclic voltammetry (CV) and UV-Vis spectroscopy.
已经制备了两种包含紫精(V2+)单元和
1,5-二羟基萘(DNP)站的供体-受体线状化合物。 UV-Vis 和 NMR 光谱以及质谱分析证明了它们与葫芦[8]
脲 (CB[8]) 形成自组装电荷转移 (CT) 复合物的能力。结合研究表明CB[8]和含有两个紫精单元的线状化合物之间形成了1:1和2:1复合物,而CB[8]和线状化合物之间仅观察到1:1包合物仅含有一个紫精单元的化合物。通过使用循环伏安法(CV)和紫外-可见光谱研究了拟轮烷框架内的线的开关行为。