Covalent transfer of chemical gradients onto a graphenic surface with 2D and 3D control

Yuanzhi Xia, Semih Sevim, João Pedro Vale, Johannes Seibel, David Rodríguez-San-Miguel, Donghoon Kim, Salvador Pané, Tiago Sotto Mayor (), Steven Feyter () and Josep Puigmartí-Luis ()
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Yuanzhi Xia: Division of Molecular Imaging and Photonics, KU Leuven
Semih Sevim: Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich
João Pedro Vale: Engineering Faculty of Porto University
Johannes Seibel: Division of Molecular Imaging and Photonics, KU Leuven
David Rodríguez-San-Miguel: Institut de Química Teòrica i Computacional, University of Barcelona (UB)
Donghoon Kim: Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich
Salvador Pané: Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich
Tiago Sotto Mayor: Engineering Faculty of Porto University
Steven Feyter: Division of Molecular Imaging and Photonics, KU Leuven
Josep Puigmartí-Luis: Institut de Química Teòrica i Computacional, University of Barcelona (UB)

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Control over the functionalization of graphenic materials is key to enable their full application in electronic and optical technologies. Covalent functionalization strategies have been proposed as an approach to tailor the interfaces’ structure and properties. However, to date, none of the proposed methods allow for a covalent functionalization with control over the grafting density, layer thickness and/or morphology, which are key aspects for fine-tuning the processability and performance of graphenic materials. Here, we show that the no-slip boundary condition at the walls of a continuous flow microfluidic device offers a way to generate controlled chemical gradients onto a graphenic material with 2D and 3D control, a possibility that will allow the sophisticated functionalization of these technologically-relevant materials.

Date: 2022
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DOI: 10.1038/s41467-022-34684-w

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