Qing Cao, Shu Jen Han, et al.
ACS Nano
Fluorescence quenching is a powerful technique used to obtain information about the dynamic changes of proteins in complex macromolecular systems. In this work, graphene is shown to be a very efficient quencher of fluorescence molecules where the quenching effect was one order of magnitude higher than that of gold. The fluorescence intensity was distance-dependent where increasing the distance between the fluorescence molecule and the graphene surface from 4 to 7 nm increased the fluorescence intensity by a factor of 7.5. This type of distance dependence suggests a nonradiative nature in the energy transfer between the graphene and the fluorophore due to the excitation of an exciton. © 2012 American Chemical Society.
Qing Cao, Shu Jen Han, et al.
ACS Nano
Julie A. Bardecker, Ali Afzali, et al.
Chemistry of Materials
Luca Nela, Jianshi Tang, et al.
Nano Letters
Po Hsun Ho, Damon B. Farmer, et al.
PNAS