The New Graphene Oxide Functionalized Composite as Black Electronic Ink
Paper ID : 1026-ICNS
saeideh Kholghi Eshkalak *1, ELAHE Kowsari2
1Department of Chemistry, Amirkabir University of Technology, Tehran, Iran.
2Department of Chemistry, Amirkabir University of Technology, 159163-4311, Tehran, Iran.
The graphene functionalized with cobalt complex containing 2-methyl-imidazole (GO-2-me-imi-Co) was synthesized for the first time. The morphology and structure of the synthesized pigment for application as black electronic ink was investigated by Fourier-transform infrared, Thermo-gravimetric analysis, high-resolution transmission electron microscope, field emission scanning electron microscope, energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy, and electron paramagnetic resonance. In this study, the presence of Co+3 and Co+1 especially Co+3, along with the positive charge of imidazole groups in the structure, resulted in a positive surface charge and possesses a 3D structure. The results obtained from the ζ-potential test revealed 67% increment in GO-2-me-imi-Co pigments in comparison with graphene oxide. In addition, the increase of mobility for GO-2-me-imi-Co pigments in tetrachloroethylene solvent was reported to be 0.1 μmcm/V s. This increment in the positive charge of the functionalized particles demonstrates the stability of pigments in the solvent and preparation of a stable electronic ink suspension.
Functionalized Graphene Oxide; Electrophoretic Properties; Cobalt Complex; Electronic Ink
Status : Abstract Accepted (Oral Presentation)