Stripe‐Like hBN Monolayer Template for Self‐Assembly and Alignment of Pentacene Molecules

Author:

Chesnyak Valeria123ORCID,Cuxart Marc G.14ORCID,Baranowski Daniel5ORCID,Seufert Knud1ORCID,Cojocariu Iulia256ORCID,Jugovac Matteo6ORCID,Feyer Vitaliy57ORCID,Auwärter Willi1ORCID

Affiliation:

1. Physics Department, TUM School of Natural Sciences Technical University of Munich 85747 Garching Germany

2. Dipartimento di Fisica Università degli Studi di Trieste via A. Valerio 2 Trieste 34127 Italy

3. Istituto Officina dei Materiali Consiglio Nazionale delle Ricerche S.S. 14 km 163.5 in AREA Science Park, Basovizza Trieste 34149 Italy

4. Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA‐Nanociencia) 28049 Madrid Spain

5. Peter Grünberg Institute (PGI‐6) Forschungszentrum Jülich GmbH 52428 Jülich Germany

6. Elettra‐Sincrotrone S.C.p.A. S.S 14 – km 163.5 Trieste 34149 Italy

7. Fakultät für Physik and Center for Nanointegration Duisburg‐Essen (CENIDE) Universität Duisburg‐Essen 47048 Duisburg Germany

Abstract

AbstractMetallic surfaces with unidirectional anisotropy are often used to guide the self‐assembly of organic molecules along a particular direction. Such supports thus offer an avenue for the fabrication of hybrid organic–metal interfaces with tailored morphology and precise elemental composition. Nonetheless, such control often comes at the expense of detrimental interfacial interactions that might quench the pristine properties of molecules. Here, hexagonal boron nitride grown on Ir(100) is introduced as a robust platform with several coexisting 1D stripe‐like moiré superstructures that effectively guide unidirectional self‐assemblies of pentacene molecules, concomitantly preserving their pristine electronic properties. In particular, highly‐aligned longitudinal arrays of equally‐oriented molecules are formed along two perpendicular directions, as demonstrated by comprehensive scanning tunneling microscopy and photoemission characterization performed at the local and non‐local scale, respectively. The functionality of the template is demonstrated by photoemission tomography, a surface‐averaging technique requiring a high degree of orientational order of the probed molecules. The successful identification of pentacene's pristine frontier orbitals underlines that the template induces excellent long‐range molecular ordering via weak interactions, preventing charge transfer.

Funder

H2020 European Research Council

H2020 Marie Skłodowska-Curie Actions

Publisher

Wiley

Subject

Biomaterials,Biotechnology,General Materials Science,General Chemistry

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Image potential states of 2D materials;Applied Materials Today;2024-08

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