Preparation of optical active polydiacetylene through gelating and the control of supramolecular chirality

作     者：DUAN PengFei LI YuanGang LIU MingHua 

作者机构：Beijing National Laboratory for Molecular ScienceCAS Key Laboratory of ColloidInterfaceand Chemical ThermodynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China College of Chemistry and Chemical EngineeringXi’an University of Science and TechnologyXi’an 710054China 

出 版 物：《Science China Chemistry》 (中国科学(化学英文版))

年 卷 期：2010年第53卷第2期

页      面：432-437页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 50673095 and 20533050) 973 Project (Grant No. 2007CB808005) 

主　　题：diacetylene low-molecular-weight organogel induced chirality supramolecular chirality 

摘      要：Achiral diacetylene 10,12-pentacosadinoic acid (PCDA) and a chiral low-molecular-weight organogelator could form co-gel in organic solvent and it could be polymerized in the presence of Zn(II) ion or in the corresponding xerogel under UV-irradiation. Optically active polydiacetylene (PDA) were subsequently obtained. Supramolecular chirality of PDA could be controlled by the chirality of gelators. Left-handed and right-handed helical fibers were obtained by using Land D-gelators in xerogels respectively, and CD spectra exhibited mirror-image circular dichroism. The PDA in xerogel exhibited typical blue-to-red transition responsive to the temperature and pH, while the supramolecular chirality of PDA showed a corresponding change.