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Clays and Clay Minerals; August 2002; v. 50; no. 4; p. 428-434
© 2002 Clay Minerals Society
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INTERCALATION OF 8-HYDROXYQUINOLINE INTO Al-SMECTITES BY SOLID-SOLID REACTIONS

Nithima Khaorapapong1, Kazuyuki Kuroda1,2 and Makoto Ogawa3,4,*

1 Department of Applied Chemistry, Waseda University, Okubo-3, Shinjuku-ku, Tokyo 169-8555, Japan
2 Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, Nishiwaseda-2, Shinjuku-ku, Tokyo 169-0051, Japan
3 Department of Earth Sciences, Waseda University, Nishiwaseda-1, Shinjuku-ku, Tokyo 169-8050, Japan
4 PRESTO, Japan Science and Technology Corporation

* E-mail address of corresponding author: makoto{at}waseda.ac.jp

Tris(8-hydroxyquinoline)aluminum(III) complexes (Alq3), one of the molecules studied most widely for organic light-emitting devices, were formed in the interlayer spaces of smectites by solid-solid reactions between Al-smectites (Al-montmorillonite and Al-synthetic saponite (Sumecton)) and 8-hydroxyquinoline (8Hq) at room temperature. The intercalation of 8-hydroxyquinoline molecules into Al-smectites was demonstrated by powder XRD, FTIR, DTA, TG, TG-MS, and chemical analysis. The coordination of the ligand to the interlayer Al cations was proved by FTIR, UV-Vis, and photoluminescence spectroscopies. The luminescence intensity of Alq3-Sumecton was much greater than that of Alq3-montmorillonite, and this was ascribed to the very small amount of quenching impurities in Sumecton.

Key Words: 8-Hydroxyquinoline • Montmorillonite • Solid-State Intercalation • Sumecton SA • Synthetic Saponite • Tris(8-hydroxyquinoline)aluminum(III) Complex






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