Presenter: Prof. Johannes Barth (Technische Universität München)

Topic: Design and manipulation of functional molecular nanosystems at interfaces

Time: 10:00 AM, Dec. 10^th (Saturday)

Location: Conference Room G, BLDG 909-1F

Abstract

The control and organization of molecular species at interfaces is key to advance molecular science, nanochemistry and the development of novel materials. We explore the pertaining bonding, assembly and dynamic behaviour at well-defined homogenous surfaces, textured templates and sp2-sheet layers. The developed bottom-up fabrication protocols employ biological and de novo synthesized building blocks, exploiting error-corrective bonding schemes as well as covalent chemistry. Our approach provides a rationale for the interfacial control of single molecular units and the design of nanoarchitectures with remarkable structural features, intricate dynamics and tailored properties.

Biography:

Selected, most recent publications as main author/principal investigator:

Author of more than 200 peer-reviewed publications during the research career (see attached publication list) . Many studies appeared in leading journals such as Nature and its sub-journals, PNAS, J. Chem. Phys., Angew. Chem. Int. Ed., JACS, ACS Nano, Nano Letters, J. Phys. Chem Lett. or Physical Review Letters. Published a series of influential review articles. According to Google Scholar (early 2016) there is considerable scientific impact (h -index=62, i10 -index=160), with two (>thirty) papers cited >1000 (>100) times. A complete publication list is also available via ResearcherID at E-4060-2013.

Key publications include:

JI Urgel, D écija, G Lyu, R Zhang, CA Palma, W Auwärter, N Lin & JV Barth:

Quasicrystallinity expressed in two- dimensional coordination networks, Nature Chem. 8, (2016). DOI: 10.1038/nchem.2507.

S Wieghold, J Li, P Simon, M Krause, Y Avlasevich, C Li, JA Garrido, U Heiz, P Samorì, K Müllen, F Esch, JV Barth & C-A Palma: Photoresponse of supramolecular self- assembled networks on graphene-diamond interfaces, Nature Comm. 7, 10700 (2016). DOI:

10.1038/ncomms10700

W. Auwärter, D. Ecija, F. Klappenberger & J.V. Barth: Porphyrins at interfaces, Nature

Chem. 7, 105-120. DOI: 10.1038/nchem.2159 (2015).

F. Klappenberger, Y.-Q. Zhang, J. Björk, S. Klyatskaya, M. Ruben, J.V. Barth: On-Surface Synthesis of Carbon- Based Scaffolds and Nanomaterials Using Terminal Alkynes, Acc. Chem. Research 48 (7), 2140 (2015).

J. Li, S. Wieghold, M.A. Öner, P. Simon, M. Hauf, E. Margapoti, J.A. Garrido, F. Esch, C.-A. Palma & J.V. Barth: Three-dimensional Bicomponent Supramolecular Nanoporous Self - assembly on a Hybrid All-carbon Atomically Flat and Transparent Platform, Nano Lett. 14, (2014). DOI: 10.1021/nl501452s

W. Auwärter, K. Seufert, F. Bischoff, D. Ecija, S. Vijayaraghavan, S. Joshi, F. Klappenberger, N. Samudrala & J.V. Barth: A surface-anchored molecular four-level conductance switch based on single proton transfer, Nature Nanotech. 7, 41 (2012)

D. écija, W. Auwärter, S. Vijarayaraghavan, K. Seufert, F. Bischoff, K. Tashiro & J.V. Barth:

Assembly and manipulation of cerium-porphyrinato sandwich complexes on a surface,

Angew. Chem. Int. Ed. 50, 3872 (2011)

D. Kühne, F. Klappenberger, W. Krenner, S. Klyatskaya, M. Ruben & J.V. Barth: Rotational and constitutional dynamics of caged supramolecules, Proc. Nat. Acad. Sci. 107, 21332 (2010)

Y. Pennec, W. Auwärter, A. Schiffrin, A. Weber-Bargioni and J.V. Barth: Supramolecular gratings for tunable confinement of electrons on metal surfaces, Nature Nanotech. 2, 99 (2007).

J.V. Barth: Molecular architectonic on metal surfaces, Annu. Rev. Phys. Chem. 58, 375 (2007).

J.V. Barth, G. Costantini and K. Kern: Engineering atomic and molecular nanostructures at surfaces, Nature 437, 671 (2005)

Contact: Prof. Lifeng Chi