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Synthetis of pi-systems - organic electronics

ABG-74770 Emploi Confirmé
12/01/2018 CDD 24 Mois > 35 et < 45 K€ brut annuel
Université Libre de Bruxelles
Brussels - Belgique
  • Chimie
synthesis, supramolecular chemistry, organic electronics, charge transport, pi-conjugated systems
Enseignement et recherche


Université Libre de Bruxelles - Free University of Brussels - (ULB) is a major academic institution with international recognition for scientific achievements.

The group of Prof. Yves Geerts is active in the design, synthesis, processing and characterization of advanced molecular materials with unprecedented properties, notably as organic semiconductors for optoelectronic applications. [1-4] Beside the synthesis of organic semiconductors, another line of research deals with the crystallization of molecular materials in specific conditions to control the structure of thin films, and ultimately their properties.

[1] “Bulky End-Capped [1]Benzothieno[3,2-b]benzothiophenes: Reaching High-Mobility Organic Semiconductors by Fine Tuning of the Crystalline Solid-State Order” G. Schweicher et al. Adv. Mater. 2015, 27, 3066–3072.

[2] "Reducing dynamic disorder in small-molecule organic semiconductors by suppressing large-amplitude thermal motions" S. Illig et al. Nature Communication 2016, 7, 10736.

[3] "Unraveling Unprecedented Charge Carrier Mobility through Structure Property Relationship of Four Isomers of Didodecyl[1]benzothieno[3,2-b][1]benzothiophene", Y. Tsutsui et al. Adv. Mater. 2016, 28, 7106.

[4] “Band Transport and Trapping in Didodecyl[1]benzothieno[3,2‑b][1]benzothiophene Probed by Terahertz Spectroscopy”, Thomas R. Arend, Andreas Wimmer, Guillaume Schweicher, Basab Chattopadhyay, Yves H. Geerts, Roland Kersting, J. Phys. Chem. Lett. 2017, 8, 5444

[5] "Toward Single Crystal Thin Films of Terthiophene by Directional Crystallization Using a Thermal Gradient" G. Schweicher et al. Cryst. Growth Des. 2011, 11, 3663-3672.

[6] "Substrate-Induced and Thin-Film Phases: Polymorphism of Organic Materials on Surfaces" A. Jones et al. Adv. Funct. Mater. 2016, 26, 2233.


Poste et missions

 “Pi-Fast” is a research project supported by the National Funds for Scientific Research (FNRS) that aims to design and synthesize molecular semiconductors that would self-organize into single crystals with charge carrier mobility, μ ≥ 40 cm2/V.s in organic field effect transistors, i.e. for charge transport probed at large time- and length-scales. [3,4].

Mobilité géographique :



A talented highly motivated young synthetic chemist with a Ph.D. in aromatic chemistry and/or organic electronics is actively searched. The candidate must have a sound knowledge of organic chemistry, be hard at work, easy-going, rigorous, and have strong laboratory skills. He/she must be fluent in English and be able to write high-quality publications. Additional knowledge of French would be appreciated.


The successful applicant is expected to develop an innovative synthetic chemistry of thienoacenes and to contribute to their solid-state characterization by thermal and structural methods. 


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