The chemical mechanism of GERS is based on charge transfers occuring between the molecules adsorbed on the graphene surface and the underlying carbon atoms. So far, GERS effects have been observed with fairly complex conjugated and macrocyclic molecules, such as phtalocyanine, rhodamine 6G, protoporphyrin IX, or crystal violet. In this work, we propose adenine as test molecule. It is a quite simple molecular compound, whose structure matches particularly well with the graphene honeycomb arrangement. Besides, it is one of the key building blocks of DNA/RNA and, from here, the importance to develop new standard reference materials based on this molecule.
Driving GERS to metrological levels
IANNARELLI, LUCA;SPOTO, Giuseppe;
2014-01-01
Abstract
The chemical mechanism of GERS is based on charge transfers occuring between the molecules adsorbed on the graphene surface and the underlying carbon atoms. So far, GERS effects have been observed with fairly complex conjugated and macrocyclic molecules, such as phtalocyanine, rhodamine 6G, protoporphyrin IX, or crystal violet. In this work, we propose adenine as test molecule. It is a quite simple molecular compound, whose structure matches particularly well with the graphene honeycomb arrangement. Besides, it is one of the key building blocks of DNA/RNA and, from here, the importance to develop new standard reference materials based on this molecule.
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