In this article, the synthesis of a tris(8-hydroxyquinoline)aluminum (AlQ(3
))-containing poly(arylene ether) (4) is reported. The presence of AlQ(3) p
endants in polymer 4 is confirmed by NMR, ultraviolet-visible, photolumines
cence, and gel permeation chromatography analyses. This is the first report
of the attachment of AlQ(3) complexes as side chains to a polymer. Polymer
4 has a glass-transition temperature of 217.8 degrees C and is thermally s
table with a 5% weight-loss temperature greater than 500 degrees C under ni
trogen, as determined by differential scanning calorimetry and thermogravim
etric analyses, respectively. Polymer 4 is quite soluble in common organic
solvents, such as tetrahydrofuran, N,N-dimethylacetamide, and CHCl3. A comp
osite that is 80 wt % polymer 4 and 20 wt % AlQ(3) forms a transparent and
tough film when cast from its chloroform solution. The application of this
AlQ(3)-containing polymer in light-emitting diodes is under investigation.
(C) 2000 John Wiley & Sons, Inc.