Chiral Metal-Free Anti-Perovskite with Strong Chiroptical Nonlinearity

IF 16.1 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Zhaoyu Wang, Xin Qiu, Hebin Wang, Wenkai Zhao, Sehrish Gull, Haolin Lu, Zechen Hao, Bing Sun, Xin Zeng, Prof. Xinfeng Liu, Hao-Li Zhang, Prof. Yongsheng Chen, Prof. Tingchao He, Prof. Guankui Long
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引用次数: 0

Abstract

The nonlinear chiroptical properties of chiral metal halide perovskite has attracted substantial attention in recent years. In order to overcome the inherent limitations of metal halide, such as high costs, potential toxicity, challenges with recycling, especially the limited laser-induced damage threshold (LDT), we have successfully constructed the first chiral metal-free anti-perovskite, with the aim of utilizing it in second harmonic generation-circular dichroism (SHG-CD). Moreover, the anti-perovskite composed entirely of small organic ions typically display a more extensive transparent window, which could contribute a high LDT. Herein two chiral metal-free anti-perovskites, R/S-MCN [(R/S-MBA)6Cl(NH4Cl6)] were constructed, and exhibit strong second-harmonic generation response from 800 to 980 nm. The second-order nonlinear optical coefficient of the chiral metal-free anti-perovskite reaches 0.89 pm/V, which is higher than that of commercial Y-cut quartz. Most importantly, both R- and S-MCN exhibit a large nonlinear optical activity with a high SHG dissymmetry factor (gSHG-CD) of 0.60 and a high laser-induced damage threshold of 71 mJ/cm2, which is higher than that of most reported chiral perovskites. Our findings indicate that chiral metal-free anti-perovskite have the potential to be a valuable addition to the development of next-generation nonlinear chiroptical devices.

Abstract Image

具有强热带非线性的手性无金属反钙钛矿
近年来,手性金属卤化物钙钛矿的非线性手性引起了人们的广泛关注。为了克服金属卤化物的固有局限性,如高成本、潜在毒性、回收挑战,特别是有限的激光诱导损伤阈值(LDT),我们成功构建了第一个手性无金属反钙钛矿,目的是将其用于二次谐波产生-圆二色性(SHG-CD)。此外,完全由小有机离子组成的反钙钛矿通常显示更广泛的透明窗口,这可能有助于高LDT。本文构建了两种手性无金属反钙钛矿R/S-MCN [(R-/S-MBA)6Cl(NH4Cl6)],在800 ~ 980 nm范围内表现出较强的二次谐波响应。手性无金属反钙钛矿的二阶非线性光学系数达到0.89 pm/V,高于商用y型石英。最重要的是,R-和S-MCN均表现出较大的非线性光学活性,SHG不对称因子(gSHG-CD)高达0.60,激光诱导损伤阈值高达71 mJ/cm2,高于大多数报道的手性钙钛矿。我们的研究结果表明,手性无金属反钙钛矿有潜力成为下一代非线性热敏器件发展的有价值的补充。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
26.60
自引率
6.60%
发文量
3549
审稿时长
1.5 months
期刊介绍: Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.
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