Formation of mixed-ligand zinc(ii) complex-montmorillonite hybrids by solid-solid reactions

Nithima Khaorapapong*, Patcharaporn Pimchan, Makoto Ogawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Two luminescent hybrids, Znqb- and Znqp-montmorillonites (q = 8-hydroxyquinoline, b = 2,2′-bipyridine, p = 1,10-phenanthroline), were prepared by solid-solid reactions between Zn(ii)-montmorillonite and two ligands (8-hydroxyquinoline and 2,2′-bipyridine or 1,10-phenanthroline) at room temperature. The intercalation and in situ complex formation of the two ligands into an interlayer space of Zn(ii)-montmorillonite were confirmed by powder XRD, TG-DTA, as well as FT-IR, UV-vis and photoluminescence spectroscopies. The emission band of Znqb-montmorillonite was red-shifted compared to that of the mixture of Znq-montmorillonite and Znb-montmorillonite, confirming the formation of Znqb complex in montmorillonite. The photoluminescence intensity of Znqb-montmorillonite was higher than that of Znqp-montmorillonite, indicating that 2,2′-bipyridine enhanced the emission intensity of zinc(8-hydroxyquinoline) complex in montmorillonite, while the coordination of 1,10-phenanthroline quenched the intensity of the immobilized chelate.

Original languageEnglish
Pages (from-to)5964-5970
Number of pages7
JournalDalton Transactions
Issue number22
Publication statusPublished - 2011 Jun 14

ASJC Scopus subject areas

  • Inorganic Chemistry


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