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ChemComm Accepted Manuscript
This article can be cited before page numbers have been issued, to do this please use: J. Mangadlao, C. Leon, M. J. Felipe and G. Advincula, Chem. Commun., 2015, DOI: 10.1039/C5CC01831E.
This is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication. Accepted Manuscripts are published online shortly after acceptance, before technical editing, formatting and proof reading. Using this free service, authors can make their results available to the community, in citable form, before we publish the edited article. We will replace this Accepted Manuscript with the edited and formatted Advance Article as soon as it is available. You can find more information about Accepted Manuscripts in the Information for Authors. Please note that technical editing may introduce minor changes to the text and/or graphics, which may alter content. The journal’s standard Terms & Conditions and the Ethical guidelines still apply. In no event shall the Royal Society of Chemistry be held responsible for any errors or omissions in this Accepted Manuscript or any consequences arising from the use of any information it contains.
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ChemComm View Article Online
DOI: 10.1039/C5CC01831E
Journal Name
RSCPublishing
Cite this: DOI: 10.1039/x0xx00000x
Electrochemical Fabrication of Graphene Nanomesh via Colloidal Templating J. D. Mangadlao,a A. C. De Leon,a M. J. Felipeb and R. C. Advinculaa
Received 00th January 2012, Accepted 00th January 2012 DOI: 10.1039/x0xx00000x www.rsc.org/
A simple electrochemical fabrication of graphene nanomesh (GNM) via colloidal templating is reported for the first time. The process involves the arraying of polystyrene (PS) spheres onto a CVD-deposited graphene, electro-deposition of carbazole units, removal of PS template and electrochemical oxidative etching. The GNM was characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) and Raman spectroscopy. Discovered in 2004, graphene, with its long-range πconjugation, has attracted tremendous attention for its exceptional structural, chemical, mechanical, thermal, electrical and even biomedical properties.1 The mean free path for electron-phonon scattering in graphene is long (>2 mm) resulting to room temperature electronic mobility that could potentially exceed 200000 cm2 V-1 s-1.2 Even with these outstanding charge-transport characteristics, graphene cannot be used as field-effect transistors (FET) device operating at room temperature due to its zero band gap.2 One way to open a band gap in graphene-based electronic system were recently demonstrated through the fabrication of graphene nanomesh (GNM), a nano-perforated form of graphene. Processes such as block-copolymer lithography which are typically followed by reactive ion etching (RIE), and nanoparticle-assisted perforation were reported to have successfully opened a technologically relevant band gap for graphene. Though these methodologies are deemed scalable to batch-process large-area substrates while simultaneously achieving exceptionally small features (
ChemComm Accepted Manuscript
This article can be cited before page numbers have been issued, to do this please use: J. Mangadlao, C. Leon, M. J. Felipe and G. Advincula, Chem. Commun., 2015, DOI: 10.1039/C5CC01831E.
This is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication. Accepted Manuscripts are published online shortly after acceptance, before technical editing, formatting and proof reading. Using this free service, authors can make their results available to the community, in citable form, before we publish the edited article. We will replace this Accepted Manuscript with the edited and formatted Advance Article as soon as it is available. You can find more information about Accepted Manuscripts in the Information for Authors. Please note that technical editing may introduce minor changes to the text and/or graphics, which may alter content. The journal’s standard Terms & Conditions and the Ethical guidelines still apply. In no event shall the Royal Society of Chemistry be held responsible for any errors or omissions in this Accepted Manuscript or any consequences arising from the use of any information it contains.
www.rsc.org/chemcomm
Page 1 of 4
ChemComm View Article Online
DOI: 10.1039/C5CC01831E
Journal Name
RSCPublishing
Cite this: DOI: 10.1039/x0xx00000x
Electrochemical Fabrication of Graphene Nanomesh via Colloidal Templating J. D. Mangadlao,a A. C. De Leon,a M. J. Felipeb and R. C. Advinculaa
Received 00th January 2012, Accepted 00th January 2012 DOI: 10.1039/x0xx00000x www.rsc.org/
A simple electrochemical fabrication of graphene nanomesh (GNM) via colloidal templating is reported for the first time. The process involves the arraying of polystyrene (PS) spheres onto a CVD-deposited graphene, electro-deposition of carbazole units, removal of PS template and electrochemical oxidative etching. The GNM was characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) and Raman spectroscopy. Discovered in 2004, graphene, with its long-range πconjugation, has attracted tremendous attention for its exceptional structural, chemical, mechanical, thermal, electrical and even biomedical properties.1 The mean free path for electron-phonon scattering in graphene is long (>2 mm) resulting to room temperature electronic mobility that could potentially exceed 200000 cm2 V-1 s-1.2 Even with these outstanding charge-transport characteristics, graphene cannot be used as field-effect transistors (FET) device operating at room temperature due to its zero band gap.2 One way to open a band gap in graphene-based electronic system were recently demonstrated through the fabrication of graphene nanomesh (GNM), a nano-perforated form of graphene. Processes such as block-copolymer lithography which are typically followed by reactive ion etching (RIE), and nanoparticle-assisted perforation were reported to have successfully opened a technologically relevant band gap for graphene. Though these methodologies are deemed scalable to batch-process large-area substrates while simultaneously achieving exceptionally small features (
