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Dielectric and Nonlinear Optical Dual Switch in An Organic-inorganic Hybrid Relaxor [(CH3)3PCH2OH][Cd(SCN)3]

Abstract

A new organic-inorganic hybrid compound [(CH3)3PCH2OH][Cd(SCN)3] (1) has been synthesized, which exhibits a reversible phase transition at 248.5 K confirmed by differential scanning calorimetry. The phase transition in 1 is from centrosymmetric space group Pmcn to non-centrosymmetric space group P21, so that 1 exhibits a switchable second harmonic generation (SHG) effect between SHG-on and SHG-off states. This phase transition also displays switchable dielectric behaviors between high and low dielectric states accompanied by the remarkable dielectric relaxation described by the Cole-Cole equation. Variable-temperature single-crystal X-ray diffraction analyses reveal that the origin of the phase transition can be attributed to the motion or reorientation of the [(CH3)3PCH2OH]+ cations and the movement of (SCN) ions in solid-state crystal. Those superior physical properties suggest that 1 could be a potential switchable dielectric and NLO relaxor-type material, which provides a new approach to design novel multiple switch materials.

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Publication details

The article was received on 29 May 2017, accepted on 18 Jun 2017 and first published on 19 Jun 2017


Article type: Research Article
DOI: 10.1039/C7QI00300E
Citation: Inorg. Chem. Front., 2017, Accepted Manuscript
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    Dielectric and Nonlinear Optical Dual Switch in An Organic-inorganic Hybrid Relaxor [(CH3)3PCH2OH][Cd(SCN)3]

    X. Zheng, P. Shi, Y. Lu, L. Zhou, J. Gao, F. Geng, D. Wu, D. Fu and Q. Ye, Inorg. Chem. Front., 2017, Accepted Manuscript , DOI: 10.1039/C7QI00300E

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