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Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system

The influence of graphene and retinoic acid (RA) – a π-conjugated organic semiconductor – interface on their hybrid system is investigated. The physical properties of the interface are assessed via scanning probe microscopy, optical spectroscopy (photoluminescence and Raman) and ab initio calculatio...

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Autores principales: Araujo, Karolline A S, Cury, Luiz A, Matos, Matheus J S, Fernandes, Thales F D, Cançado, Luiz G, Neves, Bernardo R A
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5870164/
https://www.ncbi.nlm.nih.gov/pubmed/29600157
http://dx.doi.org/10.3762/bjnano.9.90
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author Araujo, Karolline A S
Cury, Luiz A
Matos, Matheus J S
Fernandes, Thales F D
Cançado, Luiz G
Neves, Bernardo R A
author_facet Araujo, Karolline A S
Cury, Luiz A
Matos, Matheus J S
Fernandes, Thales F D
Cançado, Luiz G
Neves, Bernardo R A
author_sort Araujo, Karolline A S
collection PubMed
description The influence of graphene and retinoic acid (RA) – a π-conjugated organic semiconductor – interface on their hybrid system is investigated. The physical properties of the interface are assessed via scanning probe microscopy, optical spectroscopy (photoluminescence and Raman) and ab initio calculations. The graphene/RA interaction induces the formation of a well-organized π-conjugated self-assembled monolayer (SAM) at the interface. Such structural organization leads to the high optical emission efficiency of the RA SAM, even at room temperature. Additionally, photo-assisted electrical force microscopy, photo-assisted scanning Kelvin probe microscopy and Raman spectroscopy indicate a RA-induced graphene doping and photo-charge generation. Finally, the optical excitation of the RA monolayer generates surface potential changes on the hybrid system. In summary, interface-induced organized structures atop 2D materials may have an important impact on both design and operation of π-conjugated nanomaterial-based hybrid systems.
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spelling pubmed-58701642018-03-29 Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system Araujo, Karolline A S Cury, Luiz A Matos, Matheus J S Fernandes, Thales F D Cançado, Luiz G Neves, Bernardo R A Beilstein J Nanotechnol Full Research Paper The influence of graphene and retinoic acid (RA) – a π-conjugated organic semiconductor – interface on their hybrid system is investigated. The physical properties of the interface are assessed via scanning probe microscopy, optical spectroscopy (photoluminescence and Raman) and ab initio calculations. The graphene/RA interaction induces the formation of a well-organized π-conjugated self-assembled monolayer (SAM) at the interface. Such structural organization leads to the high optical emission efficiency of the RA SAM, even at room temperature. Additionally, photo-assisted electrical force microscopy, photo-assisted scanning Kelvin probe microscopy and Raman spectroscopy indicate a RA-induced graphene doping and photo-charge generation. Finally, the optical excitation of the RA monolayer generates surface potential changes on the hybrid system. In summary, interface-induced organized structures atop 2D materials may have an important impact on both design and operation of π-conjugated nanomaterial-based hybrid systems. Beilstein-Institut 2018-03-23 /pmc/articles/PMC5870164/ /pubmed/29600157 http://dx.doi.org/10.3762/bjnano.9.90 Text en Copyright © 2018, Araujo et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Araujo, Karolline A S
Cury, Luiz A
Matos, Matheus J S
Fernandes, Thales F D
Cançado, Luiz G
Neves, Bernardo R A
Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
title Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
title_full Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
title_fullStr Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
title_full_unstemmed Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
title_short Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
title_sort electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5870164/
https://www.ncbi.nlm.nih.gov/pubmed/29600157
http://dx.doi.org/10.3762/bjnano.9.90
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