Synthesis and properties of novel organogelators functionalized with 5-iodo-1,2,3-triazole and azobenzene groups  

作　　者：Ziyan Li Yaodong Huang Dongli Fan Huimin Li Shuxue Liu Luyuan Wang 

机构地区：[1]Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

出　　处：《Frontiers of Chemical Science and Engineering》2016年第4期552-561,共10页化学科学与工程前沿（英文版）

基　　金：Acknowledgements This work was supported by the Natural Science Foundation of Tianjin （No. 15JCYBJC20100）.

摘　　要：Two series of 5-iodo-l,2,3-triazole derivatives containing azobenzene group（s） were synthesized and their gelling properties were tested. Those containing two azobenzene groups （B series） have better gelation performance than those containing one azobenzene group （A series）. The microstructure of organogels and the driving force of gelation were investigated by scanning electron microscopy and 1H NMR, respectively. It was found that π-π stacking, van der Waals interaction, and dipole-dipole interaction were the main forces of gelation. All the tested organogels are photoresponsive and those from B series are smarter than that from A series. Henry δp-δb diagrams of compounds A1, A2, and B2 were constructed on the basis of their gelation performance and the Hansen solubility parameters of related solvents. The constructed Henry δp-δh diagrams can be used to estimate the behavior of three compounds in any untested solvent.Two series of 5-iodo-l,2,3-triazole derivatives containing azobenzene group（s） were synthesized and their gelling properties were tested. Those containing two azobenzene groups （B series） have better gelation performance than those containing one azobenzene group （A series）. The microstructure of organogels and the driving force of gelation were investigated by scanning electron microscopy and 1H NMR, respectively. It was found that π-π stacking, van der Waals interaction, and dipole-dipole interaction were the main forces of gelation. All the tested organogels are photoresponsive and those from B series are smarter than that from A series. Henry δp-δb diagrams of compounds A1, A2, and B2 were constructed on the basis of their gelation performance and the Hansen solubility parameters of related solvents. The constructed Henry δp-δh diagrams can be used to estimate the behavior of three compounds in any untested solvent.

关 键 词：iodo triazole AZOBENZENE photoresponsiveorganogel gelator-solvent effect 

分 类 号：TQ[化学工程]