文献类型：期刊文献

英文题名：Switchable V-Type [2]Pseudorotaxanes

作者：Zhang, Hongyuan;Wang, Qiaochun[1];Liu, Minhua;Ma, Xiang;Tian, He

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

年份：2009

卷号：11

期号：15

起止页码：3234

外文期刊名：ORGANIC LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000268479900019)】；

基金：We thank the NSFC/China (50673025, 20603009), National Basic Research 973 Program (2006CB806200), the Key Project of Chinese Ministry of Education (107044), the Foundation for the Author of National Excellent Doctoral Dissertation of PR China (200758), Shanghai Science and Technology Development Funds (07QA14012), and the Scientific Committee of Shanghai for funds.

语种：英文

摘要：A V-type molecule comprising a 2-[2-[4-(dimethylamino)phenyl]ethenyl]pyridinium cyanine branch and a p-aminophenoxy ethyl side arm was synthesized and can form quite different [2]pseudorotaxanes with cucurbit[7]uril (CB[7]) as a model thread in aqueous solution. The CB[7] ring can be switched reversibly from the cyanine branch to the aminophenoxy ethyl side arm by protonation of the aniline group, and the color of the solution was changed from orange red to yellow.