Optical Bifunctionality of Europium-Complexed Luminescent Graphene Nanosheets

Nano Lett. 2011, 11, 5227-5233

Graphene Oxide (GO)

1) 10% w/w Eu2O3

2) heated 8000C at 100C/min, 2h

3) Treated with conc. HNO3

4) Filtered and washed with DI water

5) Heated in an air oven at 1000C for 12 h

Luminescent graphene (LG)

Synthesis of Luminescent Graphene

Structural and Chemical Characterization

Structural and Chemical Characterization

Electron Microscopic Characterization

Electron Microscopic Characterization

Spectroscopic Characterization

Spectroscopic Characterization

Optical Bifunctionality

Conclusions

Luminescent graphene was synthesized using easily available starting materials and simple technique.

A shift in the photoluminescence from 611 nm (Eu2O3) to 618 nm is due the complexation of Eu3+ with graphene was established.

Optical bifunctionality of the luminescent graphene was studied.

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