Heterostructures Beyond Van Der Waals

Wednesday, 31 May 2017: 11:00
Churchill A1 (Hilton New Orleans Riverside)
E. M. Perez (IMDEA Nanociencia, Madrid, Spain)
One of the most attractive areas of research in Nanoscience is the combination of 2D materials through van der Waals forces heterostructures.1 Here, we present strategies beyond dispersion forces to interface 0D-2D and 2D-2D materials.

We will show examples of 0D-2D heterostructures connected through covalent and noncovalent chemistry. In the first example, we will show a method to functionalize graphene covalently with exquisite (>98%) atomic selectivity.2 In the second example, we will show that the photoresponse of MoS2 photodetectors can be enhanced by simple and reversible supramolecular functionalization with organic dyes.Finally, we will also the unique example of franckeite, a naturally occuring van der Waals heterostructure that can be thinned down to very few layers, both mechanically and through liquid-phase exfoliation.4


(1) Novoselov, K. S.; Mishchenko, A.; Carvalho, A.; Castro Neto, A. H. Science 2016, 353, DOI: 10.1126/science.aac9439

(2) Navarro, J. J.; Leret, S.; Calleja, F.; Stradi, D.; Black, A.; Bernardo-Gavito, R.; Garnica, M.; Granados, D.; Vazquez de Parga, A. L.; Pérez, E. M.; Miranda, R. Nano Lett. 2016, 16, 355.

(3) Molina-Mendoza, A. J.; Vaquero-Garzon, L.; Leret, S.; de Juan-Fernandez, L.; Pérez, E. M.; Castellanos-Gomez, A. Chem. Commun. 2016, 52, 14365.

(4) Molina-Mendoza, A. J.; Giovanelli, E.; Paz, W. S.; Nino, M. A.; Island, J. O.; Evangeli, C.; Aballe, L.; Foerster, M.; Van der Zant, H. S. J.; Rubio-Bollinger, G.; Agrait, N.; Palacios, J. J.; Perez, E. M.; Castellanos-Gomez, A. 2016arXiv:1606.06651 (final version accepted in Nature Comms.)