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Proceedings Paper

Quinoline-based polymeric metal chelate light-emitting diodes
Author(s): Fotios Papadimitrakopoulos; D. Laurence Thomsen; Keith A. Higginson
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Paper Abstract

The growth of insoluble and intractable thin organic films is presently reported by a novel self-assembly technique. Bifunctional 8,8'-dihydroxy-5,5'-biquinoline is reactively self-assembly with diethyl zinc to form a linear coordination polymer. These films were characterized by FTIR, UV/VIS spectroscopy, profilometry, and photoluminescence measurements. The film growth on glass or indium-tin oxide coated substrates was monitored by increasing absorbance at 396.6 nm using UV/VIS spectroscopy and profilometry. FTIR spectroscopy indicated that the self- assembled films are polymeric in nature. The reduction of end-group hydroxyls and a significant red-shift of the photoluminescence emission spectrum with respect to zinc bisquinoline powder was attributed to an increase in conjugation length. Single layer light emitting diodes fabricated int his fashion exhibited an orange electroluminescence, consistent with the corresponding photoluminescence spectrum.

Paper Details

Date Published: 1 December 1997
PDF: 8 pages
Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); doi: 10.1117/12.279326
Show Author Affiliations
Fotios Papadimitrakopoulos, Univ. of Connecticut (United States)
D. Laurence Thomsen, Univ. of Connecticut (United States)
Keith A. Higginson, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 3148:
Organic Light-Emitting Materials and Devices
Zakya H. Kafafi, Editor(s)

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