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A simple, economical and efficient method is introduced for the functionalization of graphene quantum dots (GQDs). The GQDs was synthesized by the thermal pyrolysis of citric acid then mono-ethanolamine (MEA) was used to functionalize its surfaces. The resultant MEA-functionalized GQDs (MEA-GQDs) had remarkable fluorescence emissions with high quantum yield. The interaction studies showed that the...
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