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Elucidating the origin of chiroptical activity in chiral 2D perovskites through nano-confined growth

Engineering and Technology

Elucidating the origin of chiroptical activity in chiral 2D perovskites through nano-confined growth

S. Ma, Y. Jung, et al.

Discover the intriguing world of chiral perovskites! This research conducted by Sunihl Ma, Young-Kwang Jung, Jihoon Ahn, and others delves into how nano-confined growth and asymmetric hydrogen bonding are driving chiroptical activity, paving the way for advanced spintronic and optoelectronic devices.

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Playback language: English
Abstract
The origin of chiroptical activity in chiral perovskites, promising materials for spintronic and polarization-based optoelectronic devices, is investigated. Nano-confined growth of chiral perovskites (MBA₂PbI₄(₁₋ₓ)Br₄ₓ) reveals that asymmetric hydrogen-bonding between chiral molecular spacers and the inorganic framework is key to promoting chiroptical activity. Nanoconfined perovskites show significant asymmetry (absorption dissymmetry of 2.0 × 10⁻³ and anisotropy factor of photoluminescence of 6.4 × 10⁻²). Electronic interactions between building blocks are crucial for chirality transfer in hybrid materials.
Publisher
Nature Communications
Published On
Jun 07, 2022
Authors
Sunihl Ma, Young-Kwang Jung, Jihoon Ahn, Jihoon Kyhm, Jeiwan Tan, Hyungsoo Lee, Gyumin Jang, Chan Uk Lee, Aron Walsh, Jooho Moon
Tags
chiral perovskites
chiroptical activity
spintronic devices
polarization-based optoelectronics
nano-confined growth
hydrogen bonding
chirality transfer

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