Charge transport modulation in pseudorotaxane 1D stacks of acene and azaacene derivatives


Acenes have received a lot of attention because of their inherent and tunable absorbing, emissive, and charge transport properties for electronic, photovoltaic, and singlet fission applications, among others. Such properties are directly governed by molecular packing, and therefore, controlling their arrangement in the solid state is of utmost importance in order to increase their performance. Herein, we describe a new solid-state ordering strategy that allows obtaining 1D mixed pi-stacks of acene and azaacene derivatives. In addition, we illustrate that charge transport can be modulated by the electronic nature of the encapsulated phenazine, opening new perspectives in the design, preparation and development of supramolecular organic semiconductors.

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Gozalvez, C; Zafra, JL; Saeki, A; Melle-Franco, M; Casado, J; Mateo-Alonso, A

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We are grateful to the Basque Science Foundation for Science (Ikerbasque), POLYMAT, the University of the Basque Country (Grupo de Investigacion GIU17/054 and SGIker), Gobierno de Espana (Ministerio de Economia y Competitividad and FEDER CTQ2016-77970-R), Gobierno Vasco (BERC programme), the Portuguese Foundation for Science and Technology (IF/00894/2015) and CICECO - Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT ref. UID/CTM/50011/2013). J. C. thanks support from MINECO/FEDER of Spain Government (CTQ2015-69391-P) and J. L. Z. thanks the Research Central Services (SCAI) of the University of Malaga. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 664878. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no 722951).

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