Synthesis and Photo-responsive Properties of Novel Gelators Based on Azobenzene

被引：0
|
作者：
Yang X. [1 ,2 ]
Zhang L. [1 ,2 ]
Li W. [1 ,2 ]
Li W. [1 ,2 ]
机构：
[1] College of Materials Science and Engineering, Hunan University, Changsha
[2] Hunan Provincial Key Laboratory of Spray Deposition Technology and Application, Hunan University, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2018年 / 45卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Azobenzene; Hansen solubility parameter; Organogel; Photo-responsive;
D O I：
10.16339/j.cnki.hdxbzkb.2018.12.017
中图分类号：
学科分类号：
摘要：
Two novel gelators Azo-1 and Azo-2 based on azobenzene were designed and synthesized. The two gelators can form gel in the multiple organic solvents. The SEM images of the xerogels showed the diameter of the gel fibers increased with the increase of polar organic solvents. Further investigation on gelation behavior based on Hansen solubility parameters of solvents revealed that most of solvents could form gels cluster in a certain region in Hansen space, and the value Tgel of gel was influenced by the dispersion parameters. The spectra character of the gelator in gel phase and sol phase was examined by UV-Vis spectra. The azobenzene group of Azo-1 in solution had a much faster trans-cis photoisomerization reaction than that of Azo-2. The azobenzene groups of Azo-1 in the gel in certain solvents performed the expected trans-cis photoisomerization with a gel to sol phase upon irradiation of UV light. An obvious change of morphologies occurred in gel phase and sol phase. The three solvents that could produce photo-induced phase transition lie on the same line in Hansen space. © 2018, Editorial Department of Journal of Hunan University. All right reserved.
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页码：108 / 116
页数：8
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共 30 条
  • [1] Smith D.K., Supramolecular gels: Building bridges, Nature Chemistry, 2, 3, pp. 162-163, (2010)
  • [2] Sangeetha N.M., Maitra U., Supramolecular gels: Functions and uses, Chemical Society Reviews, 34, 10, pp. 821-836, (2005)
  • [3] Aparicio F., Garcia F., Sanchez L., Supramolecular polymerization of C3 symmetric organogelators: cooperativity, solvent, and gelation relationship, Chemistry-A European Journal, 19, 9, pp. 3239-3248, (2013)
  • [4] George M., Weiss R.G., Molecular organogels. soft matter comprised of low-molecular-mass organic gelators and organic liquids, Accounts of Chemical Research, 39, 8, pp. 489-497, (2006)
  • [5] Tan G., Singh M., He J., Et al., Use of a self-assembling organogel as a reverse template in the preparation of imprinted porous polymer films, Langmuir the Acs Journal of Surfaces & Colloids, 21, 20, pp. 9322-9326, (2005)
  • [6] Yu X., Chen L., Zhang M., Et al., Low-molecular-mass gels responding to ultrasound and mechanical stress: towards self-healing materials, Chemical Society Reviews, 43, 15, pp. 5346-5371, (2014)
  • [7] Duarte L., Fausto R., Reva I., Structural and spectroscopic characterization of E-and Z-isomers of azobenzene, Physical Chemistry Chemical Physics, 16, 32, pp. 16919-16930, (2014)
  • [8] Pianowski Z.L., Karcher J., Schneider K., Photoresponsive self-healing supramolecular hydrogels for light-induced release of DNA and doxorubicin, Chemical Communications, 52, 15, pp. 3143-3146, (2016)
  • [9] Dong M., Babalhavaeji A., Samanta S., Et al., Red-shifting azobenzene photoswitches for in vivo use, Accounts of Chemical Research, 48, 10, pp. 2662-2670, (2015)
  • [10] Hu X.Y., Jia K., Cao Y., Et al., Dual photo-and pH-responsive supramolecular nanocarriers based on water-soluble pillar arene and different azobenzene derivatives for intracellular anticancer drug delivery, Chemistry-A European Journal, 21, 3, pp. 1208-1220, (2015)
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