Res. Chem. Intermed.
, Vol. 29, No. 3, pp. 335– 341 (2003)
Also available online - www.vsppub.com
The intercalation of metalloporphyrin complex anions
into layered double hydroxides
, TETSUYA SHICHI
, GUOZHEN ZHANG
and KATSUHIKO TAKAGI
Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University,
Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
CREST, Japan Science and Technology Corporation (JST), Kawaguchi Center Building 1-8,
Honcho 4-chome, Kawaguchi City, Saitama Prefecture 332-0012, Japan
Received 9 January 2003; accepted 18 January 2003
Abstract—Investigations to elucidate the structures of the cobalt(III) and manganese(III) complexes
of tetra(p-sulfonatophenyl)porphinate anions (M(III)TSPP; M
Co and Mn), intercalated in Mg-
Fe/Cl and Mg-Al/ Cl layered double hydroxides (LDHs) have been carried out. Powder X-ray
diffraction analysis, IR and UV-vis diffuse re ectance spectroscopy of Co(III)TSPP and Mn(III)TSPP
intercalated into the interlayer spaces of LDH resulted in their perpendicular alignment against the
host layers in the plane of the hybrid.
: Intercalation; metalloporphyrin complex; layered double hydroxide; nanocomposites.
Layered double hydroxides (LDHs) are known to have the characteristic property
of enabling the intercalation of anionic organic guests into their layered structures
to produce inorganic-organic hybrid compounds [1 – 4]. Recently, synthetic LDH
has increasingly attracted attention for its potential in applications for solar energy
conversion and as host materials in catalytic systems [5– 11]. LDHs can be
expressed by the general formula given below, while the structures with M
ratios of 1–5 are shown in Fig. 1, where M
Mg, Mn, Fe, etc.) and M
Mn, etc.) are bivalent and trivalent metallic ions, respectively.
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