title: [Synthesis and spectroscopic studies of supermolecules of PW(x)V(12 - x)-MV].
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.
authors.affiliation: Department of Chemistry, Fuzhou University, Fuzhou 350002, China.
authors.forename: Xiao-yuan
authors.initials: XY
authors.lastname: Wu
authors.forename: Han-hui
authors.initials: HH
authors.lastname: Zhang
authors.forename: Chang-cang
authors.initials: CC
authors.lastname: Huang
authors.forename: Rui-qing
authors.initials: RQ
authors.lastname: Sun
authors.forename: Qi-yu
authors.initials: QY
authors.lastname: Yang
authors.forename: Zhi-hua
authors.initials: ZH
authors.lastname: Lin
authors.forename: You-xing
authors.initials: YX
authors.lastname: Chen