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Issue 22, 2011
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Formation of mixed-ligand zinc(II) complex-montmorillonite hybrids by solid–solid reactions

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Abstract

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.

Graphical abstract: Formation of mixed-ligand zinc(ii) complex-montmorillonite hybrids by solid–solid reactions

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Publication details

The article was received on 10 Dec 2010, accepted on 28 Mar 2011 and first published on 03 May 2011


Article type: Paper
DOI: 10.1039/C0DT01736A
Citation: Dalton Trans., 2011,40, 5964-5970
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    Formation of mixed-ligand zinc(II) complex-montmorillonite hybrids by solid–solid reactions

    N. Khaorapapong, P. Pimchan and M. Ogawa, Dalton Trans., 2011, 40, 5964
    DOI: 10.1039/C0DT01736A

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