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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Detalles Bibliográficos
Autor principal:	Hodak, Jose Hector
Publicado:	2015
Materias:	Absorption Absorption coefficient Emission Fluorescence intermittency Graphene oxide Photobrightening Photolysis Reduced graphene oxide Reduction Neutron emission Optical properties Absorption co-efficient Graphene oxides Reduced graphene oxides Graphene
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97833191_v_n_p29_McDonald http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p29_McDonald
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_97833191_v_n_p29_McDonald
record_format	dspace
spelling	paper:paper_97833191_v_n_p29_McDonald2023-06-08T16:38:46Z Spectroscopy and microscopy of graphene oxide and reduced graphene oxide Hodak, Jose Hector 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. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97833191_v_n_p29_McDonald 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 Hodak, Jose Hector 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.
author	Hodak, Jose Hector
author_facet	Hodak, Jose Hector
author_sort	Hodak, Jose Hector
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
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97833191_v_n_p29_McDonald http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p29_McDonald
work_keys_str_mv	AT hodakjosehector spectroscopyandmicroscopyofgrapheneoxideandreducedgrapheneoxide
_version_	1769175798496886784

Spectroscopy and microscopy of graphene oxide and reduced graphene oxide

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