The structure of the blue luminescent delta-phase of tris(8-hydroxyquinoline)aluminium(III) (Alq3).
The existence of the facial isomer in the delta-phase of Alq3 is proven by X-ray structural analysis, revealing that both the different molecular structure and the weaker overlap of the pi-orbitals of hydroxyquinoline ligands belonging to neighboring Alq3 molecules as compared to other phases (alpha, beta) are likely to be the origin of the significantly different optical properties of delta-Alq3.
Cölle
Michael
M
Universität Bayreuth, Experimentalphysik II, Universitätsstr. 30, 95440 Bayreuth, Germany. michael.coelle@uni-bayreuth.de
Dinnebier
Robert E
RE
Brütting
Wolfgang
W