Multilayer supramolecular architectures at device interfaces: Prospects for electron and phonon transport

PC Department Online Seminar
Date: Nov 22, 2021
Time: 11:00 AM (Local Time Germany)
Speaker: Prof. Carlos-Andres Palma
Institute of Physics Chinese Academy of Sciences & Humboldt-Universität zu Berlin
Host: Akitoshi Shiotari

Manufacturing atomically-precise functional nanoarchitectures with tailored physics at well-defined device interfaces is a frontier in bottom-up nanomaterial [1,2] and condensed matter design [3]. A long-standing challenge in the field is the integration of functional elements in proof-of-concept devices. One strategy to alleviate the cumbersome device integration of single-layered molecular systems, is to achieve increasing control over vertical supramolecular heterojunctions and multilayers, so as to transition from ‘on-surface’, to ‘out-of-surface’ surface science protocols.

This strategy further facilities the modelling and design of physical properties, by mitigating the influence of the device interface and corresponding surface roughness. In this talk, I’ll introduce supramolecular multilayers at interfaces, from rylene dyes on graphene/diamond [4] and dibromoanthracene multilayers on boron nitride, to ligands on iron porphyrins [5] . I’ll discuss modelling of prospective physical properties of related multilayers, such as photoinduced charge transport at supramolecular heterojunctions [6], electron-phonon coupling, edge vibrations [7] and topological phonons. [1] C.-A. P. & Samorì, P. Nature Chem. 2011, 3, 431[2] Riss, A. et al. Nature Commun. 2020, 11, 1490[3] C.-A. P. J. Phys. Chem. Lett. 2021, 12, 454[4] Wieghold, S., et al. Nature Commun. 2016, 7, 10700[5] Wang, Z., et al. ACS Appl. Nano. Mater. 2020, 3, 11752[6] Lien-Medrano, C. R. et al. arXiv:2108.07364[7] Cojal González, J. et al. J. Phys. Chem. Lett. 2019, 10, 5830

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