High-contrast visualization of graphene oxide on dye-sensitized glass, quartz, and silicon by fluorescence quenching.
We present a novel approach for detecting and visualizing graphene oxide (GO) with high contrast on different substrates, including glass, quartz, and silicon. Visualization of GO sheets is accomplished through quenching the fluorescence of a thiophene dye, giving high optical contrast without the need to use interference methods. A comparison of fluorescence, AFM, and XRD measurements confirmed that even a single GO sheet can completely quench the fluorescence and thus be quickly visualized.
Treossi
Emanuele
E
ISOF-CNR, via Gobetti 101, 40129 Bologna, Italy.
Melucci
Manuela
M
Liscio
Andrea
A
Gazzano
Massimo
M
Samorì
Paolo
P
Palermo
Vincenzo
V