Toward Amorphous Conductors: Enhanced Conductivity of Doped Polyaniline via Interchain Crosslinking Promoted by Acid-Functionalized Aluminum Quinolines

Authors

  • M. Massi,

    1. CNR-Institute for the Study of Nanostructured Materials (ISMN), Nanotechnology of Multifunctional Materials Research Division, Via Gobetti 101, 40129 Bologna, Italy
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  • C. Albonetti,

    1. CNR-Institute for the Study of Nanostructured Materials (ISMN), Nanotechnology of Multifunctional Materials Research Division, Via Gobetti 101, 40129 Bologna, Italy
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  • M. Facchini,

    1. CNR-Institute for the Study of Nanostructured Materials (ISMN), Nanotechnology of Multifunctional Materials Research Division, Via Gobetti 101, 40129 Bologna, Italy
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  • M. Cavallini,

    1. CNR-Institute for the Study of Nanostructured Materials (ISMN), Nanotechnology of Multifunctional Materials Research Division, Via Gobetti 101, 40129 Bologna, Italy
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  • F. Biscarini

    1. CNR-Institute for the Study of Nanostructured Materials (ISMN), Nanotechnology of Multifunctional Materials Research Division, Via Gobetti 101, 40129 Bologna, Italy
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  • This work was supported by EU project no. EU-NMP-IP 500335 (NAIMO) and MIUR-FIRB-RBNE01YSR8 NOMADE. We thank Dago de Leeuw, Philips Research Laboratories, for providing us the test pattern devices.

Abstract

original image

Polyaniline is doped with an Alq3 homologue endowed with sulfonic acid functionalities. The design of the dopant, which favors the formation of a crosslinked network between the polymer chains, along with its semiconducting electrical properties, highly enhance charge transport inside the amorphous phase of the material (see figure).

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