In situ formation of bis(8-hydroxyquinoline) zinc(II) complex in the interlayer spaces of smectites by solid-solid reactions

N. Khaorapapong, M. Ogawa

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Bis(8-hydroxyquinoline) zinc(II) complex (Znq2), an electroluminescent material used for organic light emitting devices (OLEDS), formed in the interlayer spaces of smectites by solid-solid reactions between Zn(II)-smectites (Zn(II)-synthetic saponite and Zn(II)-montmorillonite) and 8-hydroxyquinoline at ambient condition. The intercalation of 8-hydroxyquinoline molecules into Zn(II)-smectites and the in situ complex formation of Znq2 chelate in smectites were confirmed by powder XRD, FT-IR, TG-DTA, UV-vis absorption and photoluminescence spectroscopies, and elemental (CHN) analysis. The photoluminescence intensity of the Znq2 complex in synthetic saponite was higher than that of the complex in montmorillonite, suggesting the very low content of quenching impurities in synthetic saponite. The difference in the luminescence bands were thought to be caused by the different molecular structure and molecular packing of the complex formed in the interlayer spaces.

Original languageEnglish
Pages (from-to)941-948
Number of pages8
JournalJournal of Physics and Chemistry of Solids
Volume69
Issue number4
DOIs
Publication statusPublished - 2008 Apr

Fingerprint

montmorillonite
Clay minerals
interlayers
Zinc
zinc
Bentonite
Oxyquinoline
Photoluminescence spectroscopy
Intercalation
Ultraviolet spectroscopy
Absorption spectroscopy
Differential thermal analysis
Molecular structure
Luminescence
Quenching
Photoluminescence
Impurities
Powders
Molecules
Chemical analysis

Keywords

  • A. Optical materials
  • C. Thermogravimetric analysis (TGA)
  • C. X-ray diffraction
  • D. Luminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

In situ formation of bis(8-hydroxyquinoline) zinc(II) complex in the interlayer spaces of smectites by solid-solid reactions. / Khaorapapong, N.; Ogawa, M.

In: Journal of Physics and Chemistry of Solids, Vol. 69, No. 4, 04.2008, p. 941-948.

Research output: Contribution to journalArticle

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