Electroluminescent properties of anthracene-containing polyimides

Eugene I. Mal'tsev; Mariy A. Brusentseva; Vladimir I. Berendyaev; Vladislav A. Kolesnikov; Boris V. Kotov; Anatoly V. Vannikov

doi:10.1117/12.372729

17 December 1999 Electroluminescent properties of anthracene-containing polyimides

Eugene I. Mal'tsev, Mariy A. Brusentseva, Vladimir I. Berendyaev, Vladislav A. Kolesnikov, Boris V. Kotov, Anatoly V. Vannikov

Author Affiliations +

Proceedings Volume 3797, Organic Light-Emitting Materials and Devices III; (1999) https://doi.org/10.1117/12.372729
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

We report electroluminescence (EL) of polyimides prepared from 9,10-bis(m-aminophenylthio)-anthracene (BPTA) and 1,3-bis(3,4- dicarboxyphenoxy)benzene or 2,2-bis[4-(3,4- dicarboxyphenoxy)phenyl]-propane dianhydrides. The new polyimide-type of polymers, aromatic polyimides with and without sulphur atoms in the backbone, were investigated as electron-hole transporting and light-emitting materials for use in single- and multilayer electroluminescent diodes. These polymers belong to a new class of donor-acceptor compounds and have some advantages over their counterparts. They are efficient electron and hole conductors and known as photoluminophores exhibiting intense photoluminescence of exciplex origin. Some of them were used earlier as hole conducting layers together with tris(8-quinolinolato)aluminum complex as an electron conducting layer in bilayer LEDs of high brightness. Donor-acceptor interactions determine optical, electrical and photoelectrical properties of these polymers. A direct correlation was revealed between transporting characteristics and electroluminescent properties for these electroactive materials. At room temperature, the electron and hole drift mobilities directly measured by conventional TOF techniques indicated effective bipolar transport. The simplicity of synthesis, high thermal stability, organic solvent solubility together with excellent film-forming properties make the polymers potentially of interest for technological applications. Properties of the uni- and bilayer LEDs based on these materials are discussed in terms of the band structure, bipolar transport and electron donor-acceptor interactions.

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Eugene I. Mal'tsev, Mariy A. Brusentseva, Vladimir I. Berendyaev, Vladislav A. Kolesnikov, Boris V. Kotov, and Anatoly V. Vannikov "Electroluminescent properties of anthracene-containing polyimides", Proc. SPIE 3797, Organic Light-Emitting Materials and Devices III, (17 December 1999); https://doi.org/10.1117/12.372729

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