Formation and optical properties of metal/10-hydroxybenzo[h]quinolone complexes in the interlayer spaces of magadiite by solid-solid reactions.

Yifu Zhang,Shengnan Gao,Changgong Meng,Hanmei Jiang,Qiushi Wang,Jiang Zhu,Yan Cheng

doi:10.1098/rsos.171732

Yifu Zhang, Shengnan Gao + Show 5 more

Open Access

https://doi.org/10.1098/rsos.171732

Copy DOI

Abstract

Intercalation and in situ formation of three fluorescent complexes, Al(III)-, Cr(III)- and Cu(II)-10-hydroxybenzo[h]quinolone (M-HBQ, M = Al, Cr and Cu), in the interlayer spaces of magadiite (mag) were studied by solid–solid reactions between metal ions exchanged mags (M-mag, M = Al, Cr and Cu) and HBQ. Results show that the basal spacings of the intercalated composites increase after the intercalation of HBQ into M-mags. The amount of HBQ in the intercalated compounds is different due to the amount of metal ions and the diversification of coordination ability of metal ions, and the order of the coordination ability of these three metal ions is Cu2+ > Cr3+ > Al3+. The amount of the metal cations in the interlayer of mag is enough for the in situ complex formation of M-HBQ complexes. The slight shift of the absorption and luminescence bands of the complexes suggests the different microstructures, including molecular packing of the complexes in the interlayer spaces of mags, resulting that the host–guest interactions are formed. These findings show that the intercalation and in situ formation of M-HBQ complexes (M = Al, Cr and Cu) in the interlayer space of mag are successfully achieved in the current work.

Highlights

In the past decades, intercalation of guest species into layered inorganic solids has attracted great attention from a wide range of scientific and practical viewpoints [1,2,3,4,5,6,7]
Scheme 2 shows the synthetic process of HBQ-M-mags (M = Al, Cr and Cu) in the interlayer spaces of mags, which mainly comprise four steps including synthesis of mag, two step ion exchanges (H-mag and M-mag) and solid–solid reactions
After the ion exchange with metal ions and the solid–solid reaction with HBQ, the colours of M-mags and HBQ-M-mags are shown in figure 1

Summary

Introduction

Intercalation of guest species into layered inorganic solids has attracted great attention from a wide range of scientific and practical viewpoints [1,2,3,4,5,6,7]. It has been found that solid–solid reactions are promising ways to intercalate organic guest species into the interlayer spaces of inorganic solids [2,9,10]. The solid–solid intercalation of both cationic and non-ionic species into inorganic solids, such as layered clay minerals, layered zirconium phosphate and zeolites, has been reported so far [2,9,14,15,16,17]

Methods

Results

Conclusion