Synthesis, Electronic States, and Electroluminescent Properties of Aluminum Complex Based on Mixed Ligands with 8-Hydroxyquinolinate and Acetylacetone

Liu Qing Chen; Chun Yan Sun; Xu Guang Liu; Bing She Xu

doi:10.4028/www.scientific.net/AMR.306-307.358

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 306-307Synthesis, Electronic States, and...

Synthesis, Electronic States, and Electroluminescent Properties of Aluminum Complex Based on Mixed Ligands with 8-Hydroxyquinolinate and Acetylacetone

Abstract:

We report the synthesis, photophysical investigation, computational studies and electroluminescent(EL) properties of an organic electroluminescent material-Bis(8-hydroxyQuino line) acetylacetone aluminum (Alq₂A). It is characterized by ¹H NMR, IR and elemental analysis techniques. The absorption and fluorescence spectra of various Alq₂A systems including solution in ethanol, powder and thin film on quartz (thickness of 50nm) have also been systematically evaluated. Analysis of the electronic structure of Alq₂A calculated by quantum chemical calculations reveals a localization of orbital and the distribution of orbital energy. The results from EL experiments indicate that Alq₂A has good electron transport properties as compared with tris(8-hydroxyquinolinato) aluminum (Alq₃). Thus, Alq₂A is considered to be a superior emitter and electron transporting material for display application compared with Alq₃.

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Advanced Materials Research (Volumes 306-307)

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358-361

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https://doi.org/10.4028/www.scientific.net/AMR.306-307.358

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August 2011

Authors:

Liu Qing Chen, Chun Yan Sun, Xu Guang Liu, Bing She Xu

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8-Hydroxyquinoline, Acetylacetone, Electroluminescence

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