文献类型：会议论文

英文题名：Photodriven and thermal-driven shuttling of α-cyclodextrin on the molecular rotaxane containing azobenzene

作者：Qu, D.H.[1]; Wang, Q.C.[1]; Tian, H.[1,2]

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

会议论文集：4th International Symposium on Photochromism (ISOP 04)

会议日期：SEP 12-15, 2004

会议地点：Arcachon, FRANCE

语种：英文

外文关键词：alpha-cyclodextrin; photoisomerization; rotaxane; thermal-driven

摘要：A rotaxane containing an alpha-CD macrocycle, an azobenzene unit and two different fluorescent naphthalimide units as stoppers has been synthesized. The rotaxane can serve as a photodriven and thermal-driven molecular shuttle. The change of the temperature can make the CD macrocycle shuttle back and forth between the azobenzene and biphenyl stations, and the cis-trans photoisomerization of the azobenzene unit resulted in also the motion of the CD macrocycle on themolecular thread. The absorption and fluorescence spectra of the rotaxane in the different states were studied. The regulation and full reversibility of the fluorescence changes make the molecular shuttle serve as a molecular storage medium or switch with all clean inputs and outputs.