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Preparation of optical active polydiacetylene through gelating and the control of supramolecular chirality 被引量：4

Preparation of optical active polydiacetylene through gelating and the control of supramolecular chirality
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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. 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.
作者 DUAN PengFei LI YuanGang LIU MingHua
机构地区 Beijing National Laboratory for Molecular Science College of Chemistry and Chemical Engineering
出处 《Science China Chemistry》 SCIE EI CAS 2010年第2期432-437,共6页 中国科学(化学英文版)
基金 supported by the National Natural Science Foundation of China (Grant Nos. 50673095 and 20533050) 973 Project (Grant No. 2007CB808005)
关键词 DIACETYLENE low-molecular-weight organogel induced chirality supramolecular chirality diacetylene low-molecular-weight organogel induced chirality supramolecular chirality
分类号 O631.1 [理学—高分子化学]
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参考文献31

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  • 8Yagai S,Nakajima T,Kishikawa K,Kohmoto S,Karatsu T,Kitamura A.Hierarchical organization of photoresponsive hydrogen- bonded rosettes. Journal of the American Chemical Society . 2005
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引证文献4

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Science China Chemistry
2010年 第2期

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