Spectroscopy and microscopy of graphene oxide and reduced graphene oxide
Graphene oxide (GO) is an important material that provides a scalable approach for obtaining chemically derived graphene. Its optical and electrical properties are largely determined by the presence of oxygen-containing functionalities, which decorate its basal plane. This chemical derivatization re...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p29_McDonald |
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todo:paper_97833191_v_n_p29_McDonald2023-10-03T16:44:53Z Spectroscopy and microscopy of graphene oxide and reduced graphene oxide McDonald, M.P. Morozov, Y. Hodak, J.H. Kuno, M. Absorption Absorption coefficient Emission Fluorescence intermittency Graphene oxide Photobrightening Photolysis Reduced graphene oxide Reduction Absorption Neutron emission Optical properties Photolysis Reduction Absorption co-efficient Fluorescence intermittency Graphene oxides Photobrightening Reduced graphene oxides Graphene Graphene oxide (GO) is an important material that provides a scalable approach for obtaining chemically derived graphene. Its optical and electrical properties are largely determined by the presence of oxygen-containing functionalities, which decorate its basal plane. This chemical derivatization results in useful properties such as the existence of a band gap as well as emission spanning both the visible and near infrared. Notably, GO’s optical and electrical properties can be altered through reduction, which proceeds through the removal of these oxygen-containing functional groups. However, widely variable behavior has been observed regarding the evolution of GO’s optical response during reduction. These discrepancies arise from the different reduction methods being used and, in part, from the fact that nearly all prior measurements have been ensemble studies. Consequently, detailed mechanistic studies of GO reduction are needed which can transcend the limitations of ensemble averaging. In this chapter, we show the spectroscopic evolution of GO’s optical properties during photoreduction at the single’sheet level. Laser–induced reduction, in particular, offers a unique and potentially controllable method for producing reduced GO (rGO), a material with properties similar to those of graphene. However, given the complexity of GO’s photoreduction mechanism, microscopic monitoring of the process is essential to understanding and ultimately exploiting this approach. © Springer International Publishing Switzerland 2015. Fil:Hodak, J.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. CHAP info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p29_McDonald |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Absorption Absorption coefficient Emission Fluorescence intermittency Graphene oxide Photobrightening Photolysis Reduced graphene oxide Reduction Absorption Neutron emission Optical properties Photolysis Reduction Absorption co-efficient Fluorescence intermittency Graphene oxides Photobrightening Reduced graphene oxides Graphene |
| spellingShingle |
Absorption Absorption coefficient Emission Fluorescence intermittency Graphene oxide Photobrightening Photolysis Reduced graphene oxide Reduction Absorption Neutron emission Optical properties Photolysis Reduction Absorption co-efficient Fluorescence intermittency Graphene oxides Photobrightening Reduced graphene oxides Graphene McDonald, M.P. Morozov, Y. Hodak, J.H. Kuno, M. Spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| topic_facet |
Absorption Absorption coefficient Emission Fluorescence intermittency Graphene oxide Photobrightening Photolysis Reduced graphene oxide Reduction Absorption Neutron emission Optical properties Photolysis Reduction Absorption co-efficient Fluorescence intermittency Graphene oxides Photobrightening Reduced graphene oxides Graphene |
| description |
Graphene oxide (GO) is an important material that provides a scalable approach for obtaining chemically derived graphene. Its optical and electrical properties are largely determined by the presence of oxygen-containing functionalities, which decorate its basal plane. This chemical derivatization results in useful properties such as the existence of a band gap as well as emission spanning both the visible and near infrared. Notably, GO’s optical and electrical properties can be altered through reduction, which proceeds through the removal of these oxygen-containing functional groups. However, widely variable behavior has been observed regarding the evolution of GO’s optical response during reduction. These discrepancies arise from the different reduction methods being used and, in part, from the fact that nearly all prior measurements have been ensemble studies. Consequently, detailed mechanistic studies of GO reduction are needed which can transcend the limitations of ensemble averaging. In this chapter, we show the spectroscopic evolution of GO’s optical properties during photoreduction at the single’sheet level. Laser–induced reduction, in particular, offers a unique and potentially controllable method for producing reduced GO (rGO), a material with properties similar to those of graphene. However, given the complexity of GO’s photoreduction mechanism, microscopic monitoring of the process is essential to understanding and ultimately exploiting this approach. © Springer International Publishing Switzerland 2015. |
| format |
CHAP |
| author |
McDonald, M.P. Morozov, Y. Hodak, J.H. Kuno, M. |
| author_facet |
McDonald, M.P. Morozov, Y. Hodak, J.H. Kuno, M. |
| author_sort |
McDonald, M.P. |
| title |
Spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| title_short |
Spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| title_full |
Spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| title_fullStr |
Spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| title_full_unstemmed |
Spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| title_sort |
spectroscopy and microscopy of graphene oxide and reduced graphene oxide |
| url |
http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p29_McDonald |
| work_keys_str_mv |
AT mcdonaldmp spectroscopyandmicroscopyofgrapheneoxideandreducedgrapheneoxide AT morozovy spectroscopyandmicroscopyofgrapheneoxideandreducedgrapheneoxide AT hodakjh spectroscopyandmicroscopyofgrapheneoxideandreducedgrapheneoxide AT kunom spectroscopyandmicroscopyofgrapheneoxideandreducedgrapheneoxide |
| _version_ |
1807324379229454336 |