Preparation and Luminescence Property of Layer-by-layer Self-assembled Nanometer Multilayer Film Based on Polyoxometalate and Tris(2,2-bipyridine)ruthenium

Abstract

Abstract: A photo-luminescent multilayer film based on Keggin-type polyoxometalate PMo₁₂O₄₀^3- and transition metal complex tris(2,2-bipyridine) ruthenium [Ru(bpy)₃]²⁺ was prepared by using layer-by-layer assembly(LBL). The formation of multilayer film was monitored by ultraviolet absorption spectra(UV). The absorption intensity of characteristic peaks increases with a four-layer cycle, indicating that the LBL assembly film grows linearly and reproducibly. The composition of the film was measured by X-ray photoelectron spectrum(XPS). The film exhibited photo-luminescence arising from π^*-t_2g ligand-to-metal transition of Ru(bpy).

Key words: Polyoxometalate, Layer-by-layer self-assembly, Film, Luminescence, Ruthenium

CLC Number:

O614

TrendMD:

MA Hui-Yuan, PENG Jun, HAN Zhan-Gang, FENG Yu-Hua, WANG En-Bo . Preparation and Luminescence Property of Layer-by-layer Self-assembled Nanometer Multilayer Film Based on Polyoxometalate and Tris(2,2-bipyridine)ruthenium[J]. Chem. J. Chinese Universities, 2004, 25(11): 1993.

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Preparation and Luminescence Property of Layer-by-layer Self-assembled Nanometer Multilayer Film Based on Polyoxometalate and Tris(2,2-bipyridine)ruthenium

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