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March 18, 2026Angewandte Chemie International Edition

Chiral Nonlinear Optical Response in Achiral Quasi‐2D Perovskite Ferroelectric Featuring Unusually Large A‐Site Cation

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Authors

CFChang‐Chun FanSJShulin JiaoQBQiang-Qiang Bi

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Overview

Demonstrates chiral nonlinear optical properties in a new 2D perovskite, suggesting novel material design opportunities.

Key Points

  • The aim is to explore the chiral nonlinear optical response in a new quasi-2D perovskite material.
  • Developed a new 2D tri-layered lead bromide perovskite with 4-aminomonpholine cations.
  • Investigated its structural properties using crystallography.
  • Measured optical properties including second-harmonic generation and circular dichroism.
  • The new compound exhibits an ultrahigh tolerance factor of 1.74.
  • It has an order-disorder ferroelectric phase transition at 418 K.
  • Notable chiral nonlinear optical properties were observed, with strong second-harmonic generation circular dichroism (g_SHG-CD ≈ 0.63).

Cite This Study

Fan et al. (2026) studied this question.

synapsesocial.com/papers/69ba421b4e9516ffd37a2136https://doi.org/10.1002/anie.3136861
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  4. 4Computational and Experimental Investigation of Chiral and Achiral 2D Organic Lead Bromide Perovskites: Octahedral Distortions and Electronic and Optical Properties2025
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