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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
Published on: December 29, 2016
[Synthesis and spectroscopic studies of supermolecules of PW(x)V(12 - x)-MV]
Xiao-yuan Wu1, Han-hui Zhang, Chang-cang Huang
1Department of Chemistry, Fuzhou University, Fuzhou 350002, China.
Abstract:
A series of supermolecules of PW(x)V(12 - x)-MV (PW(x)V(12 - x): polyoxometalates x = 2, 4, 6, 8, 10; MV: methyl violet) with Keggin structure were prepared and their characters were studied by electronic spectra, infrared spectra and fluorescence spectra. As a result, the supermolecules were formed by the cooperating action between polyoxometalates and methyl violet. In the supermolecule, the structures of cation and anion are not destroyed. With the content of V increasing, the oxidation ability of polyoxometalates anion is enhanced, and the interaction of methyl violet cation and polyoxometalates anion is enhanced too. The FTIR absorption peaks of nu(as)(M=O(t)), nu(as)(M-O(b)-M) and nu(as)(M-O(c)-M) move from 966, 886, and 804 cm(-1) to 955, 875 and 786 cm(-1), respectively; the UV-Vis absorption peak moves from 519 to 506 nm; the emission peak excited at 530 nm moves from 692 to 644 nm too. These changes are according with the degree of the interaction of polyoxometalates and methyl violet.
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