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Quenching of photoluminescence of Rhodamine 6G molecules on functionalized graphene
Author(s) -
Valeš Václav,
Kovaříček Petr,
Ji Xiang,
Ling Xi,
Kong Jing,
Dresselhaus Mildred S.,
Kalbáč Martin
Publication year - 2016
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201600230
Subject(s) - rhodamine 6g , graphene , photoluminescence , materials science , raman spectroscopy , quenching (fluorescence) , rhodamine , photochemistry , molecule , nanotechnology , fluorescence , optoelectronics , chemistry , organic chemistry , optics , physics
The photoluminescence quenching of the Rhodamine 6G molecules deposited on fluorinated, thiophenol‐functionalized, and 4‐nitrophenyl‐functionalized graphene layers were studied. Both the spectroscopic measurements and the atomic force microscopy imaging confirmed that Rhodamine 6G molecules are present on graphene, functionalized graphene and the bare substrate. The Raman signals of the molecules are enhanced for all the probed functionalized graphene samples. On the other hand, the photoluminescence from the Rhodamine 6G is suppressed when the molecules are in contact with a graphene layer for all types of probed functionalized graphene. The large Raman maps measured on the tested samples showed that the quenching of the photoluminescence is not significantly affected by the local environment.