文献类型：期刊文献

英文题名：Dual-mode tunable viscosity sensitivity of a rotor-based fluorescent dye

作者：Zhu, Liang-Liang;Qu, Da-Hui;Zhang, Dong;Chen, Zhao-Fei;Wang, Qiao-Chun;Tian, He[1]

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：2010

卷号：66

期号：6

起止页码：1254

外文期刊名：TETRAHEDRON

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000274591900013)】；

基金：This work was supported by NSFC/China (20972053,20603009), National Basic Research 973 Program (2006CB806200), partially by Scientific Committee of Shanghai

语种：英文

摘要：The design and fabrication of new type viscosity sensor oil molecular scale will enrich the detection means in both physical and life sciences In this work, a rotor-containing fluorescent dye was prepared, which can reveal a typical viscosity-sensitive behavior due to the environment-induced non-radiative decay The viscosity-sensitive behavior of this dye Could be tunable (locked and activated) in aqueous environment, either with the reversible light-driven trans/cis-photoisomerization of the cyanostilbene moiety, or with the reversible assembly/disassembly process of beta-cyclodextrin (beta-CD) to the rotor part Such dual-mode tunable viscosity sensitivity can be well distinguished by fluorescent spectra A slope method, on double-logarithmic plots of the fluorescent signal to the corresponding environmental viscosity, makes a quantitative estimation to the tunable viscosity sensitivity. featuring the 'Activated' and the 'Locked' State in this molecular-scale viscometer (C) 2009 Published by Elsevier Ltd