Quinoline-based polymeric metal chelate light-emitting diodes

Fotios Papadimitrakopoulos; D. Laurence Thomsen III; Keith A. Higginson

doi:10.1117/12.279326

1 December 1997 Quinoline-based polymeric metal chelate light-emitting diodes

Fotios Papadimitrakopoulos, D. Laurence Thomsen III, Keith A. Higginson

Proceedings Volume 3148, Organic Light-Emitting Materials and Devices; (1997) https://doi.org/10.1117/12.279326
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

Fotios Papadimitrakopoulos, D. Laurence Thomsen III, and Keith A. Higginson "Quinoline-based polymeric metal chelate light-emitting diodes", Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); https://doi.org/10.1117/12.279326

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