POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, E-20018 Donostia-San Sebastian, Spain.
Org Lett. 2013 Jan 4;15(1):84-7. doi: 10.1021/ol303108q. Epub 2012 Dec 20.
A solvent switchable rotaxane equipped with a pyrene stopper and with two ferrocenyl units on the macrocycle is reported, in which three different states, two nondegenerate and one degenerate, can be obtained in different solvents at room temperature. This is accompanied by high contrast changes in fluorescence intensity of the pyrene stopper by the presence of the ferrocenyl moieties on the macrocycle, which quench the emission of pyrene more efficiently with proximity.
报道了一种带有芘塞和大环上两个二茂铁单元的可溶剂切换轮烷，在室温下不同溶剂中可以得到三种不同的状态，两种非简并态和一种简并态。这伴随着大环上的二茂铁部分存在时，芘塞荧光强度的高对比度变化，通过接近更有效地猝灭芘的发射。
