Supramolecular Self-Assembly Induced Graphene Oxide Based Hydrogels and Organogels

Qian-Yi Cheng†‡, Ding Zhou†, Yun Gao†, Qi Chen†, Zhong Zhang*†, and Bao-Hang Han*†
† National Center for Nanoscience and Technology, Beijing 100190, China
‡ College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Langmuir, 2012, 28 (5), pp 3005–3010
DOI: 10.1021/la204558f
Publication Date (Web): January 14, 2012
Copyright © 2012 American Chemical Society
*Tel./fax: +86 10 8254 5586 (Z.Z.); +86 10 8254 5576 (B.-H.H.). E-mail: zhong.zhang@nanoctr.cn (Z.Z.); hanbh@nanoctr.cn (B.-H.H.).
Surface Chemistry and Colloids

Abstract

Abstract Image

We demonstrate the construction of three-dimensional graphene oxide based gel networks through the self-assembly of a series of amphiphilic molecules, which possess a polar carbohydrate headgroup attached to a nonpolar pyrene group. The gelation process can occur in both aqueous and organic solutions and be influenced by the gelators’ molecular structure. The driving forces for the gelation process were determined as π–π stacking and hydrogen bonding interaction by using fluorescence and infrared spectroscopies. Rheometry was used to investigate the mechanical properties of the hydrogels and the organogels. The hydrogel was investigated to be applied to remove dye from aqueous solution.

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History

  • Published In Issue February 07, 2012
  • Article ASAPJanuary 27, 2012
  • Just Accepted ManuscriptJanuary 14, 2012
  • Received: November 19, 2011
    Revised: January 09, 2012

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