Amidourea-based homoduplex as a super organogelator  

作　　者：CHU WeiJun CHEN ChuanFeng 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Molecular Recognition and Function,Institute of Chemistry Chinese Academy of Sciences Beijing 100190,China [2]Graduate University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Science Bulletin》2012年第33期4278-4283,共6页

基　　金：supported by the National Natural Science Foundation of China (91127009);the National Basic Research Program of China(2011CB932501)

摘　　要：The amidourea-based homoduplex was developed as a super organogelator,which could form stable gels in wide-tested solvents.And the reversible gel to solution transition was responsive to heat/cool and acid/base stimuli.The organogels were extensively investigated by 1 H NMR,UV-visible absorption spectroscopy,fluorescence spectroscopy,scanning electron microscopy,transmission electron microscopy and powder X-ray diffraction.Based on these data,the gelation mechanism was rationally proposed.The hydrogen-bonded homoduplexes served as the basic assembling units,and further aggregated into three dimensional networks via-stacking and van der Waals interactions,which consequently led to the entangled fibers for the gel formation.The amidourea-based homoduplex was developed as a super organogelator, which could form stable gels in wide-tested solvents. And the reversible gel to solution transition was responsive to heat/cool and acid/base stimuli. The organogels were extensively investigated by 1H NMR, UV-visible absorption spectroscopy, fluorescence spectroscopy, scanning electron microscopy, transmission electron microscopy and powder X-ray diffraction. Based on these data, the gelation mechanism was rationally proposed. The hydrogen-bonded homoduplexes served as the basic assembling units, and further aggregated into three dimensional networks via π-π stacking and van der Waals interactions, which consequently led to the entangled fibers for the gel formation.

关 键 词：双链 同源 扫描电子显微镜 透射电子显微镜 有机凝胶 X-射线衍射 吸收光谱法 荧光光谱法 

分 类 号：O621.2[理学—有机化学]