An electroswitchable fluorescence thin-film based on a luminescent polyoxometalate cluster

Bin Wang; Zhen-Dong Yin; Li-Hua Bi; Li-Xin Wu

doi:10.1039/C0CC01651A

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An electroswitchable fluorescence thin-film based on a luminescent polyoxometalate cluster†

Bin Wang,^a Zhen-Dong Yin,^a Li-Hua Bi*^a and Li-Xin Wu*^a

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* Corresponding authors

^a State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, P. R. China
E-mail: blh@jlu.edu.cn, wulx@jlu.edu.cn

Abstract

We selected a Eu³⁺-containing tungstogermanate [(CH₃)₄N]_2.5H_7.5[Eu(GeW₁₁O₃₉)(H₂O)₂]₂·4.5H₂O (EuGeW) as a molecular dyad combining fluorescence and electroactivity components within the same framework and studied its electroswitchable fluorescence in solution and in the thin-film, which can be reversibly switched by electrochemical stimulation.

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Supplementary files

CVs of 2mM EuGeW and the thin-film. Time-dependent UV-vis spectra of 0.1 mM EuGeW upon electrochemical reduction at −0.9 V. UV-vis absorption spectra under open circuit and electrochemical reduction at −0.9 V and luminescence spectrum of 0.1 M EuGeW. Luminescent spectra of 0.1 M EuGeW with different electrochemical reduction times at −0.9 V. UV-vis absorption spectra of EuGeW and PEI solutions and a (PEI/EuGeW) _n thin-film. UV-vis absorption spectra of a {PEI/P ₂W ₁₈} ₇{PEI/EuGeW} ₃₄ thin-film under open circuit and electrochemical reduction at different applied potentials. UV-vis absorption spectra of a {PEI/P ₂W ₁₈} ₇{PEI/EuGeW} ₃₄ thin-film as a function of electrochemical reduction time. Potential currents and absorbances at 627 nm of {PEI/P ₂W ₁₈} ₇{PEI/EuGeW} ₃₄ thin-film during subsequent double-potential steps from −0.7 to 0.7 V PDF (582K)

Article information

DOI: https://doi.org/10.1039/C0CC01651A
Article type: Communication
Submitted: 30 May 2010
Accepted: 08 Jul 2010
First published: 09 Aug 2010

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Chem. Commun., 2010,46, 7163-7165

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An electroswitchable fluorescence thin-film based on a luminescent polyoxometalate cluster

B. Wang, Z. Yin, L. Bi and L. Wu, Chem. Commun., 2010, 46, 7163 DOI: 10.1039/C0CC01651A

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Chemical Communications

An electroswitchable fluorescence thin-film based on a luminescent polyoxometalate cluster†

Abstract

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An electroswitchable fluorescence thin-film based on a luminescent polyoxometalate cluster

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