Tris(8-hydroxyquinolinato)aluminium
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| Names | |
|---|---|
| IUPAC name
Tris(8-hydroxyquinolinato)aluminium
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| Other names
8-Hydroxyquinoline aluminum salt, Alq3, Aluminum 8-hydroxyquinolinate, Aluminum oxinate,
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| Identifiers | |
| ECHA InfoCard | 100.016.570 |
CompTox Dashboard (EPA)
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| Properties | |
| C27H18AlN3O3 | |
| Molar mass | 459.43 |
| Appearance | Yellow Powder |
| Melting point | >300 °C |
| insol in water | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tris(8-hydroxyquinolinato)aluminium is the chemical compound with the formula Al(C9H6NO)3. Widely abbreviated Alq3, it is a coordination complex wherein aluminium is bonded in a bidentate manner to the conjugate base of three 8-hydroxyquinoline ligands. Both the meriodonal and facial isomers are known as well as several polymorphs (different crystalline forms).[1] The compound is prepared by the reaction of 8-hydroxyquinoline with aluminium(III) sources[2]
- Al3+ + C9H6NOH → Al(C9H6NO)3 + 3 H+
Alq3 is a common component of organic light-emitting diodes (OLED's). Variations in the substituents on the quinoline rings affect its luminescence properties.[3]
References
- ^ Michael Cölle, Robert E. Dinnebier and Wolfgang Brütting "The structure of the blue luminescent -phase of tris(8-hydroxyquinoline)aluminium(III) (Alq3)" Chemical Communications 2002, pp. 2908-9. doi:10.1039/b209164j
- ^ Katakura, R.; Koide, Y. “Configuration-Specific Synthesis of the Facial and Meridional Isomers of Tris(8-hydroxyquinolinate)aluminum (Alq3)” Inorganic Chemistry 2006 volume 45,pp 5730-5732. doi:10.1021/ic060594s
- ^ Victor A. Montes, Radek Pohl, Joseph Shinar, Pavel Anzenbacher Jr. "Effective Manipulation of the Electronic Effects and Its Influence on the Emission of 5-Substituted Tris(8-quinolinolate) Aluminum(III) Complexes" Chemistry - A European Journal 2006, Volume 12, pp. p 4523-4535. doi:10.1002/chem.200501403