• 文献标题:   Hybrid Gels Assembled from Fmoc-Amino Acid and Graphene Oxide with Controllable Properties
  • 文献类型:   Article
  • 作  者:   XING PY, CHU XX, LI SY, MA MF, HAO AY
  • 作者关键词:   amino acid, fluorescence, graphene oxide, mechanical propertie, supramolecular gel
  • 出版物名称:   CHEMPHYSCHEM
  • ISSN:   1439-4235 EI 1439-7641
  • 通讯作者地址:   Shandong Univ
  • 被引频次:   29
  • DOI:   10.1002/cphc.201402018
  • 出版年:   2014

▎ 摘  要

A supramolecular gel is obtained from the self-assembly of an ultralow-molecular-weight gelator (N-fluorenyl-9-methoxycarbonyl glutamic acid) in good and poor solvents. The gelators can self-assemble into a lamellar structure, which can further form twisted fibers and nanotubes in the gel phase. Rheological studies show that the gels are robust and rigid, and are able to rapidly self-recover to a gel after being destroyed by shear force. Fluorescence experiments reveal the aggregation-induced emission effects of the gel system; the fluorescence intensity is significantly enhanced by gel formation. Graphene oxide (GO) is introduced into the system efficiently to give a hybrid material, and the interaction between gelators-GO sheets is studied. Rheological and fluorescent studies imply that the mechanical properties and the fluorescent emission of the hybrid materials can be fine-tuned by controlling the addition of GO.