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![The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
Regulation of metal valence states for enhancing second harmonic generation performance of chiral tin halides
Yue Wang1, Puxin Cheng1, Wenqing Han1
1School of Materials Science and Engineering, Tianjin Key Laboratory of Metal and Molecular Materials Chemistry, Frontiers Science Center for New Organic Matter, Academy for Advanced Interdisciplinary Studies, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China. yszheng@nankai.edu.cn.
Abstract:
Chiral metal halide perovskites (MHPs) possess an inherent noncentrosymmetric structure, offering a promising platform for the development of second-order nonlinear optical (NLO) materials. Recent research has emphasized the influence of metal valence states on the physical and chemical properties of perovskites. In this work, a series of novel chiral tin-based MHPs were constructed by adjusting the metal valence states, thereby tuning the second-order NLO performance. Through the oxidation strategy, (R-/S-3-methylpiperidine)2SnBr3Br (R-/S-2Sn) can be easily transformed into centimeter-scale (R-/S-3-methylpiperidine)2SnBr6 (R-/S-4Sn) crystals. This transformation significantly enhances the second harmonic generation (SHG) response owing to the reduction in crystal spatial symmetry following the change in the valence states of tin. This work highlighted the potential of low-dimensional chiral tin-based MHPs in high-performance NLO applications, offering a foundation for future exploration in this field.
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