ROCHE, Gilles; BRUCKNER, Gudrun; DUMITRESCU, Dan; MOREAU, Joël; VAN DER LEE, Arie; WANTZ, Guillaume; DAUTEL, O.J.

doi:10.1002/aelm.202100265

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ROCHE, Gilles
Laboratoire de l'intégration, du matériau au système [IMS]

BRUCKNER, Gudrun
Carinthian Tech Research [CTR]

DUMITRESCU, Dan

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Article de revue

Ce document a été publié dans

Advanced Electronic Materials. 2021-09p. 2100265

Résumé en anglais

The synthesis and characterization of a series of [1]benzothieno[3,2-b][1]benzothiophene (BTBT) molecules disubstituted by hydroxy aliphatic chains in positions 2 and 7 (BTBT-CnOH), where the intralayer molecular stacking alternates between a classical and an inverted herringbone mode as a function of whether the alkyl sides chains have an even or an odd number of carbon atoms are reported. This odd–even effect does not only affect the interlayer distance of the lamellar structures and the melting points, but also the electronic properties. The BTBT-CnOH odd series develops a classical herringbone pattern with edge-to-edge S⋯S interaction chains linked together by face-to-edge S⋯S interaction chains with 2D mobility. However, the even series has only edge-to-edge interactions in an inverted herringbone organization and thus only a 1D conducting character. These two types of herringbone patterns have different field effect transistor characteristics and mobilities, those of the odd members being systematically higher than their even neighbors. This is the first example of an odd–even effect impacting the electronic properties of an organic semiconductor.< Réduire

Mots clés en anglais

Supramolecular architectures

Odd-even effect

OFETs

BTBT

URI

https://oskar-bordeaux.fr/handle/20.500.12278/140405

DOI

http://dx.doi.org/10.1002/aelm.202100265

Project ANR

Modules solaires photovoltaïques organiques de grande surface à hauts rendements stabilisés - ANR-13-PRGE-0006

Unités de recherche

IMS : Laboratoire de l'Intégration du Matériau au Système - UMR 5218