TY - JOUR
T1 - Graphene/Carbon Dot Hybrid Thin Films Prepared by a Modified Langmuir-Schaefer Method
AU - Kouloumpis, Antonios
AU - Thomou, Eleni
AU - Chalmpes, Nikolaos
AU - Dimos, Konstantinos
AU - Spyrou, Konstantinos
AU - Bourlinos, Athanasios B.
AU - Koutselas, Ioannis
AU - Gournis, Dimitrios
AU - Rudolf, Petra
PY - 2017/5
Y1 - 2017/5
N2 - The special electronic, optical, thermal, and mechanical properties of graphene resulting from its 2D nature, as well as the ease of functionalizing it through a simple acid treatment, make graphene an ideal building block for the development of new hybrid nanostructures with well-defined dimensions and behavior. Such hybrids have great potential as active materials in applications such as gas storage, gas/liquid separation, photocatalysis, bioimaging, optoelectronics, and nanosensing. In this study, luminescent carbon dots (C-dots) were sandwiched between oxidized graphene sheets to form novel hybrid multilayer films. Our thin-film preparation approach combines self-assembly with the Langmuir-Schaefer deposition and uses graphene oxide nanosheets as template for grafting C-dots in a bidimensional array. Repeating the cycle results in a facile and low-cost layer-by-layer procedure for the formation of highly ordered hybrid multilayers, which were characterized by photoluminescence, UV-visible, X-ray photoelectron, and Raman spectroscopies, as well as X-ray diffraction and atomic force microscopy.
AB - The special electronic, optical, thermal, and mechanical properties of graphene resulting from its 2D nature, as well as the ease of functionalizing it through a simple acid treatment, make graphene an ideal building block for the development of new hybrid nanostructures with well-defined dimensions and behavior. Such hybrids have great potential as active materials in applications such as gas storage, gas/liquid separation, photocatalysis, bioimaging, optoelectronics, and nanosensing. In this study, luminescent carbon dots (C-dots) were sandwiched between oxidized graphene sheets to form novel hybrid multilayer films. Our thin-film preparation approach combines self-assembly with the Langmuir-Schaefer deposition and uses graphene oxide nanosheets as template for grafting C-dots in a bidimensional array. Repeating the cycle results in a facile and low-cost layer-by-layer procedure for the formation of highly ordered hybrid multilayers, which were characterized by photoluminescence, UV-visible, X-ray photoelectron, and Raman spectroscopies, as well as X-ray diffraction and atomic force microscopy.
KW - LUMINESCENT CARBON NANODOTS
KW - GRAPHITE OXIDE
KW - PRUSSIAN BLUE
KW - QUANTUM DOTS
KW - NANOTUBES
KW - NANOCRYSTALS
KW - PERFORMANCE
KW - ABSORPTION
KW - CHEMISTRY
U2 - 10.1021/acsomega.7b00107
DO - 10.1021/acsomega.7b00107
M3 - Article
SN - 2470-1343
VL - 2
SP - 2090
EP - 2099
JO - ACS Omega
JF - ACS Omega
IS - 5
ER -