Ma, Xiaohe, Lim, Gin Keat, Harris, Kenneth David Maclean  ORCID: https://orcid.org/0000-0001-7855-8598, Apperley, David C., Horton, Peter N., Hursthouse, Michael B. and James, Stuart L.
2012.
Efficient, scalable, and solvent-free mechanochemical synthesis of the OLED material Alq3(q = 8-Hydroxyquinolinate).
Crystal Growth and Design
12
(12)
, pp. 5869-5872.
10.1021/cg301291w
|
Abstract
The aluminum complex Alq3 (q = 8-hydroxyquinolinate), which has important applications in organic light-emitting diode materials, is shown to be readily synthesized as a pure phase under solvent-free mechanochemical conditions from Al(OAc)2OH and 8-hydroxyquinoline by ball milling. The initial product of the mechanochemical synthesis is a novel acetic acid solvate of Alq3, and the α polymorph of Alq3 is obtained on subsequent heating/desolvation of this phase. The structure of the mechanochemically prepared acetic acid solvate of Alq3 has been determined directly from powder X-ray diffraction data and is shown to be a different polymorph from the corresponding acetic acid solvate prepared by solution-state crystallization of Alq3 from acetic acid. Significantly, the mechanochemical synthesis of Alq3 is shown to be fully scalable across two orders of magnitude from 0.5 to 50 g scale. The Alq3 sample obtained from the solvent-free mechanochemical synthesis is analytically pure and exhibits identical photoluminescence behavior to that of a sample prepared by the conventional synthetic route.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Advanced Research Computing @ Cardiff (ARCCA) Chemistry |
| Subjects: | Q Science > QD Chemistry |
| Publisher: | American Chemical Society |
| ISSN: | 1528-7483 |
| Last Modified: | 24 Oct 2022 10:00 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/42882 |
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