Graphene and graphene oxide (GO) have attracted considerable attention in the field of nanotechnology of late. The interacalation of GO by organic molecules with appropriate constitutions and dimensions can lead to the formation of functional materials with tunable surfaces. Depending upon the organic molecule's size, shape and function, the properties of the hybrid materials can be modulated. In this context, a series of tetracationic cyclophanes incorporating bipyridinium, diazapyrenium, and diazaperylenium dicationic subunits have been designed to intercalate the GO layers through p���p stacking and cation���p interactions in DMF. Self-assembly of cyclophanes composed of diazapyrenium units with the GO layers have been shown to form a stable gel which exhibits multilayer packing. In addition, XRD analysis of this self-assembled material indicates the presence of the tetracationic cyclophane in between the GO layers. A detailed investigation of the noncovalent functionalization of GO with a series of viologens and cylophanes will be presented.

Noncovalent functionaliazation of graphene oxide layers  with tetracationic cyclophanes

243rd National Meeting (2012)

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