A Ferrocene-Functionalized [2]Rotaxane with Two Fluorophores as Stoppers

作者：Zhang, Hui; Zhou, Bin; Li, Hong; Qu, Da-Hui^*; Tian, He

来源：Journal of Organic Chemistry, 2013, 78(5): 2091-2098.

DOI：10.1021/jo302107a

• SELF-SORTING ORGANIZATION
• LIGHT-DRIVEN
• MOLECULAR SHUTTLE
• ENERGY-TRANSFER
• ELECTRON-TRANSFER
• ROTAXANES
• COMPLEXES
• DYNAMICS
• SYSTEM
• MOTION

In the past few decades, bistable [2]rotaxanes have been extensively studied because of their applications in the fields of functional molecules and molecular machines In this paper, a di-ferrocene-functionalized [2]rotaxane with two fluorophores as stoppers was designed, prepared, and studied. In this bistable [2]rotaxane, a dibenzo-24-crown-8 macrocycle functionalized with two ferrocene moieties as electron donors can reversibly shuttle between two distinct stations, namely, a dialkylammonium recognition site and a N-methyltriazolium recognition site, by external acid-base stimuli, which has been demonstrated using H-1 NMR spectroscopy. It has been shown that, by introducing two ferrocene units into the macrocycle component, the fluorescence of two fluorescent stoppers, namely, the anthracene fluorophore and the 4-morpholin-naphthalimide fluorophore, can be changed in an alternate mode by an adjustable, distance-dependent photoinduced electron transfer process that occurs between the ferrocene electron donors and each of the two fluorophores.

• 出版日期2013-3-1
• 单位华东理工大学