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Polymers 2018, 10(5), 553; https://doi.org/10.3390/polym10050553

PANI Branches onto Donor-Acceptor Copolymers: Synthesis, Characterization and Electroluminescent Properties of New 2D-Materials

1
Departamento de Química, Facultad de Ciencias, Universidad de Tarapacá, P.O. Box 7-D, Av. General Velásquez 1775, Arica, Chile
2
Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile
3
UC Energy Research Center, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile
4
Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile
5
Institut des Matériaux Jean Rouxel (IMN), CNRS, UMR 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes CEDEX 3, France
6
MOLTECH-Anjou, CNRS, UMR 6200, Université de Nantes, 2 rue de la Houssinière, BP 92208, F-44000 Nantes, France
*
Author to whom correspondence should be addressed.
Received: 2 May 2018 / Revised: 17 May 2018 / Accepted: 17 May 2018 / Published: 21 May 2018
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Abstract

A new series of two-dimensional statistical conjugated polymers based on aniline and 9,9-dihexylfluorene as donor units and benzo- or naphtho-quinoxaline/thiadiazole derivatives as acceptor moieties, possessing PANI segments as side chains, were designed and synthesized. To investigate the effects of the perpendicular PANI branches on the properties of the main chain, the optical, electrochemical, morphological and electroluminescence properties were studied. The 2D materials tend to possess lower molecular weights and to absorb and to emit light red-shifted compared to the trunk 1D-polymers, in the yellow-red region of the visible spectrum. The 1D- and 2D-conjugated polymers present optical band gaps ranging from 2.15–2.55 eV, HOMO energy levels between −5.37 and −5.60 eV and LUMO energy levels between −3.02 and −3.29 eV. OLED devices based on these copolymers were fabricated. Although the performances were far from optimal due to the high turn-on voltages for which electroluminescence phenomena occur, a maximum luminescence of 55,100 cd/m2 together with a current density of 65 mA/cm2 at 18.5 V were recorded for a 2D-copolymer, PAFC6TBQ-PANI. View Full-Text
Keywords: donor-acceptor copolymer; polyaniline; 2D-conjugated polymers; OLEDs donor-acceptor copolymer; polyaniline; 2D-conjugated polymers; OLEDs
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Jessop, I.A.; Díaz, F.R.; Terraza, C.A.; Tundidor-Camba, A.; Leiva, Á.; Cattin, L.; Bèrnede, J.-C. PANI Branches onto Donor-Acceptor Copolymers: Synthesis, Characterization and Electroluminescent Properties of New 2D-Materials. Polymers 2018, 10, 553.

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