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Synthesis and characterization of new layered polyoxometallates–1,10-decanediamine intercalative nanocomposites

Published online by Cambridge University Press:  03 March 2011

Guangjin Zhang ,
Haohao Ke ,
Tao He ,
Debao Xiao ,
Zhaohui Chen ,
Wensheng Yang  and
Jiannian Yao
Guangjin Zhang
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
Haohao Ke
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
Tao He
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
Debao Xiao
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
Zhaohui Chen
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
Wensheng Yang
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
Jiannian Yao*
Affiliation:
Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
*
b)Address all correspondence to this author. e-mail: jnyao@iccas.ac.cn
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Abstract

Hydrothermal reaction of phosphomolybdic acid (PMo12) and phosphotungstic acid (PW12) with the surfactant template 1,10-decanediamine (1,10-DAD) yielded two new nanocomposites, [C10H20(NH2)2]2·H3PMo12O40·(H2O)7.5 and [C10H20(NH2)2]2·H3PW12O40·(H2O)2.4. The produced needlelike crystals of the two nanocomposites have fine-layered structures. X-ray diffraction analyses indicate that change of polyoxometallates has little effect on the tilt angle of the 1,10-DAD molecules for such polyoxometallates–organic amine systems. Fourier transform infrared and Raman spectra show that in the hybrid, the PMo12 forms infinite two-dimensional networks, and the PW12 keeps its Keggin structure in the hybrid except distortion to some degree. The two nanocomposites show different photochromic properties; PMo12–DAD hybrid can be colored under ultraviolet irradiation, whereas PW12–DAD hybrid cannot.

Keywords

HydrothermalCompositeMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 2 , February 2004 , pp. 496 - 500
Copyright
Copyright © Materials Research Society 2004

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