Nitrogen containing graphene like structures were obtained by the pyrolysis of two pyrimidine polymers at 600 �C. Pyrimidine polymers were prepared by the base catalyzed aldol condensation reactions between 2-decyloxy-4,6-dimethylpyrimidine and two aromatic dialdehydes. Terephthalaldehyde and isophthalaldehyde were employed as the two aromatic dialdehydes to study the effect of the structure of the polymer on pyrolyzed products. The synthesized polymers were characterized by 1H-NMR, UV-visible spectroscopy, differential scanning calorimerty, thermogravimetric analysis, and powder X-ray diffraction. Pyrolyzed products were shown to have a graphitic structure as proved by Raman spectroscopy, scanning electron microscopy, and powder X-ray diffraction studies. The presence of nitrogen in the graphitic structures was proved by elemental analysis and energy dispersive X-ray analysis experiments. Fluorescence quenching experiments with poly(3-hexylthiophene) (P3HT) showed that the resultant graphitic materials can act as acceptor materials. Application of these materials in P3HT/graphene hybrid field effect transistors exhibited 10 times higher mobilities and comparable on/off ratios with organic field effect transistors with only P3HT.

Nitrogen containing graphene like structures by pyrolyzing pyrimidine polymers and their application in semiconductor/graphene hybrid field effect transistors

247th National Meeting (2014)

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