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Issue 41, 2018
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Poly(para-phenyleneethynylene)s as emitters in polymer LEDs

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11 different dialkoxy- and dialkyl-poly(para-phenyleneethynylene)s (PPEs) featuring novel branched and literature described linear and branched side chains were prepared using a Sonogashira coupling. The side chains were of different length and branching character. The degree of polymerization of the PPEs ranged from Pn = 44–343 with polydispersities ranging from 1.5–3.1. Fairly simple OLED-stacks with up to three layers (electron injection, emitter layer, and hole injection) were produced. Depending upon the PPEs’ structure and the stack architecture but particularly the thickness of the emitting PPE-layer, a large increase in brightness up to 2.2 × 103 cd m−2 was observed, a significant improvement over earlier reported values.

Graphical abstract: Poly(para-phenyleneethynylene)s as emitters in polymer LEDs

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Publication details

The article was received on 02 Aug 2018, accepted on 07 Sep 2018 and first published on 10 Sep 2018

Article type: Paper
DOI: 10.1039/C8TC03848A
J. Mater. Chem. C, 2018,6, 11002-11006

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    Poly(para-phenyleneethynylene)s as emitters in polymer LEDs

    E. Smarsly, D. Daume, F. Braig, S. Koser, E. Dörsam and U. H. F. Bunz, J. Mater. Chem. C, 2018, 6, 11002
    DOI: 10.1039/C8TC03848A

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