2D Perovskite Nanosheets with Intrinsic Chirality,The Journal of Physical Chemistry Letters

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2D Perovskite Nanosheets with Intrinsic Chirality
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-03-10 , DOI: 10.1021/acs.jpclett.1c00315
He Ren _{1,

2} , Yue Wu ₁ , Chenchen Wang _{1,

2} , Yong Yan _{1,

2,

3}

Affiliation

Chiral perovskite materials have been intensively studied because of their unique properties and wide range of potential applications; however, the synthesis of perovskite nanocrystals with improved chirality has been scarcely investigated. In this Letter, two-dimensional perovskite nanosheets with intrinsic chirality are demonstrated. Inserting chiral amines into the perovskite framework leads to the chirality transfer from amine molecules to perovskite structure. The protecting agent, specifically, achiral octylamine, is found to influence the chiral optical signal or dissymmetric factor of nanosheets significantly. By controlling the amount of octylamine, we have synthesized perovskite nanosheets with the highest g-factor ever reported. We expect our primary demonstration could attract more attention toward the synthesis of intrinsic chiral perovskite nanocrystals and the development of nanocrystal-based chiral-optical devices with improved functions.

中文翻译：

具有固有手性的2D钙钛矿纳米片

手性钙钛矿材料因其独特的性能和广泛的潜在应用而受到了广泛的研究。然而，很少研究具有改善的手性的钙钛矿纳米晶体的合成。在这封信中，演示了具有固有手性的二维钙钛矿纳米片。将手性胺插入钙钛矿骨架中导致手性从胺分子转移至钙钛矿结构。发现保护剂，特别是非手性辛胺，对纳米片的手性光信号或不对称因子有显着影响。通过控制辛胺的量，我们合成了具有最高g值的钙钛矿纳米片曾经报道过。我们希望我们的主要演示将吸引更多的注意力，以固有的手性钙钛矿纳米晶体的合成和具有改进功能的基于纳米晶体的手性光学器件的开发。

更新日期：2021-03-18

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