Dielectric and nonlinear optical dual switching in an organic–inorganic hybrid relaxor [(CH3)3PCH2OH][Cd(SCN)3]. Issue 9 (5th July 2017)

• Record Type: Journal Article
• Authors: Zheng, Xuan; Shi, Ping-Ping; Lu, Yang; Zhou, Lin; Gao, Ji-Xing; Geng, Fu-Juan; Wu, De-Hong; Fu, Da-Wei; Ye, Qiong
• Is Part Of: Inorganic chemistry frontiers. Volume 4:Issue 9(2017)
• Page Start: 1445
• Page End: 1450
• Publication Date: 2017-07-05
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7qi00300e
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : [(CH3 )3 PCH2 OH][Cd(SCN)3 ] exhibits dielectric and nonlinear optical dual switching with reversible phase transition as an organic–inorganic hybrid relaxor. Abstract : A new organic–inorganic hybrid compound [(CH3 )3 PCH2 OH][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 in1 is from a centrosymmetric space group Pmcn to a non-centrosymmetric space group P 21, so that1 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 )3 PCH2 OH] + cations and the movement of (SCN) − ions in solid-state crystals. These superior physical properties suggest that1 could be a potential switchable dielectric and NLO relaxor-type material, which provides a new approach to design novel multiple switch materials.