Blue emitting tris (8-oxoquinoline) aluminum (III) (Alq 3 )

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C546S008000

Reexamination Certificate

active

10517203

ABSTRACT:
Process for the preparation of the facial isomer of tris(8-oxoquinoline) aluminum(III) (Alq3), comprising the step of heating α-Alq3in solid phase at a temperature equal to or higher than 350° C. but lower than 420° C., to obtain a mixture of γ-Alq3and δ-Alq3.

REFERENCES:
Chemical Abstracts, vol. 117, No. 16, Oct. 19, 1992 Columbus, Ohio, US; abstract No. 160319, Mori, Yasushi et al: “Organic electroluminescent diode element” XP002254143 abstract & JP 04 085388 A (Toshiba K.K., Japan) Mar. 18, 1992.
Kushto, G.P. et al: “Characterization of the chemistry that occurs at the Alq3/alkali metal halide heterointerface using quantum chemical analyses” Proceedings of SPIE-The International Society for Optical Engineering (Jul. 30, -Aug. 01, 2001), vol. 4464(Organic Light-Emitting Materials and Devices V), 374-382, 2002 XP008021266 the whole document.
Brinkmann M. et al.: “Correlation between molevular packing and optical properties in different crystalline polymorphs and amorphous thin films of mer-tris (8-hydroxyquinoline) aluminum(III)” Journal of the American Chemical Society., vol. 122, No. 21- May 31, 2000 pp. 5147-5157, XP002254141 American Chemical Society, Washington DC., US ISSN: 0002-7863 cited in the application the whole document.
Braun M. et al.: “A new crystalline phase of the electroluminescent material tris(8-hydroxyquinoline) aluminum exhibiting blueshifted fluorescence” Journal of Chemical Physics, vol. 114, No. 21, 2001, pp. 9625-9632, XP008021268 New York, NY, US ISSN: 0021-9606 cited in the application the whole document.
Cölle M. et al.: “The structure of the blue luminescent delta-phase of tris (8-hydroxyquinoline)aluminium(III)” Chemical Communications., No. 23, —Dec. 7, 2002 pp. 2908-2909, XP002254142 Royal Society of Chemistry., GB ISSN: 1359-7345 the whole document.
Cölle M. et al: “Preparation and Characterization of Blue-Luminescent Tris(8-Hydroxyquinoline)Aluminum (ALQ3)” Advanced Functional Materials, Wiley Intersciences, Wienheim, DE, vol. 13, No. 2, Feb. 2003, pp. 108-112, XP001143601 ISSN: 1616-301X the whole document.

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