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Rendering graphene supports hydrophilic with non-covalent aromatic functionalization for transmission electron microscopy

Pantelic, R. S. and Fu, W. and Schönenberger, C. and Stahlberg, H.. (2014) Rendering graphene supports hydrophilic with non-covalent aromatic functionalization for transmission electron microscopy. Applied physics letters, Vol. 104, H. 13. pp. 134103-134107.

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Official URL: http://edoc.unibas.ch/dok/A6263215

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Abstract

Amorphous carbon films have been routinely used to enhance the preparation of frozen-hydrated transmission electron microscopy (TEM) samples, either in retaining protein concentration, providing mechanical stability or dissipating sample charge. However, strong background signal from the amorphous carbon support obstructs that of the sample, and the insulating properties of amorphous carbon films preclude any efficiency in dispersing charge. Graphene addresses the limitations of amorphous carbon. Graphene is a crystalline material with virtually no phase or amplitude contrast and unparalleled, high electrical carrier mobility. However, the hydrophobic properties of graphene have prevented its routine application in Cryo-TEM. This letter reports a method for rendering graphene TEM supports hydrophilic - a convenient approach maintaining graphene`s structural and electrical properties based on non-covalent, aromatic functionalization.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
05 Faculty of Science > Departement Biozentrum > Structural Biology & Biophysics > Structural Biology (Stahlberg)
UniBasel Contributors:Schönenberger, Christian and Stahlberg, Henning and Fu, Wangyang and Pantelic, Radosav Svetozara
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0003-6951
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:06 Feb 2015 09:59
Deposited On:20 Jun 2014 07:56

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