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Issue 33, 2014
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Ion pair charge-transfer thiogermanate salts [MV]2Ge4S10·xSol: solvent induced crystal transformation and photocurrent responsive properties

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Abstract

As most of the chalcogenidometalate anions are well-known electron-rich systems, design and preparation of ion pair compounds, by integrating an organic acceptor (A) with an inorganic chalcogenidometalate donor (D), are an attractive strategy to obtain new functional materials. We report herein the single-crystal structures and properties of three new ion pair charge-transfer (IPCT) compounds by incorporating thiogermanates with methylviologen (MV2+, N,N′-dimethyl-4,4′-bipyridinium dication), [MV]2Ge4S10·xSol (Sol = solvent). Sharp and fast solvent-induced color changes and switchable fluorescence emission are observed for the compounds. The weak interactions that relate to the solvent and ions in the structures are likely the key points to modulate the cation–anion charge-transfer. A photocurrent response is observed for the photoelectric system of the IPCT compound upon repetitive switching of light on and off.

Graphical abstract: Ion pair charge-transfer thiogermanate salts [MV]2Ge4S10·xSol: solvent induced crystal transformation and photocurrent responsive properties

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Publication details

The article was received on 30 Apr 2014, accepted on 20 Jun 2014 and first published on 23 Jun 2014


Article type: Paper
DOI: 10.1039/C4DT01289E
Citation: Dalton Trans., 2014,43, 12582-12589
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    Ion pair charge-transfer thiogermanate salts [MV]2Ge4S10·xSol: solvent induced crystal transformation and photocurrent responsive properties

    X. Sun, Q. Zhu, W. Mu, L. Qian, L. Yu, J. Wu, G. Bian and J. Dai, Dalton Trans., 2014, 43, 12582
    DOI: 10.1039/C4DT01289E

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