Polarized light is critical for a wide range of applications in modern optics. However, its generation and modulation typically require additional optical comments, which hinders device compactness. Herein, an air‐stable Tin(IV)‐based hybrid metal halide, (C10H9N2O)2SnCl6, composed of [C10H9N2O]+ cations and isolated [SnCl6]2− octahedra is reported. Notably, (C10H9N2O)2SnCl6 exhibits a robust birefringence of 0.50@550 nm that is evidently larger than those of commercially used crystals, which enables efficient modulation of polarized light. Moreover, it possesses a broad polarized blue emission in the range of 374–600 nm with a peak at 426 nm. Theoretical and structural studies reveal that the high optical anisotropy for large birefringence and directly polarized emission of (C10H9N2O)2SnCl6 is ascribed to the cooperative effect of distortion of [SnCl6]2− and high π‐conjugation of [C10H9N2O]+ in parallel arrangement. This work may provide new thoughts on designing and realizing the miniaturization of polarization‐resolved optoelectronic devices.

中文翻译：

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一种用于调制和产生偏振光的高光学各向异性混合金属卤化物


偏振光对于现代光学的广泛应用至关重要。但是，它的生成和调制通常需要额外的光学注释，这阻碍了器件的紧凑性。在此，报道了一种空气稳定的锡 （IV） 基杂化金属卤化物 （C10H9N2O）2SnCl6，由 [C10H9N2O] + 阳离子和分离的 [SnCl6] 2− 八面体组成。值得注意的是，（C10H9N2O）2SnCl6 表现出 0.50@550 nm 的稳健双折射，明显大于市售晶体的双折射，从而能够有效调制偏振光。此外，它具有 374-600 nm 范围内的宽偏振蓝色发射，峰值为 426 nm。理论和结构研究表明，（C10H9N2O）2SnCl6 的大双折射和直接偏振发射的高光学各向异性归因于 [SnCl6]2− 的失真和 [C10H9N2O]+ 的高 π 共轭的协同效应。这项工作可能为设计和实现偏振分辨光电器件的小型化提供新思路。