Using post-synthetic ligand modification to imprint chirality onto the electronic states of cesium lead bromide (CsPbBr3) perovskite nanoparticles | Zendy

Gouranga H. Debnath | Zendy; Zheni N. Georgieva | Zendy; Brian P. Bloom | Zendy; Susheng Tan | Zendy; David H. Waldeck | Zendy

Open Access

Using post-synthetic ligand modification to imprint chirality onto the electronic states of cesium lead bromide (CsPbBr₃) perovskite nanoparticles

Author(s) -

Gouranga H. Debnath,

Zheni N. Georgieva,

Brian P. Bloom,

Susheng Tan,

David H. Waldeck

Publication year - 2021

Publication title -

nanoscale

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.038

H-Index - 224

eISSN - 2040-3372

pISSN - 2040-3364

DOI - 10.1039/d1nr04274b

Subject(s) - perovskite (structure) , caesium , chirality (physics) , ligand (biochemistry) , nanoparticle , bromide , materials science , nanotechnology , inorganic chemistry , chemistry , crystallography , physics , chiral symmetry , nuclear physics , biochemistry , receptor , nambu–jona lasinio model , quark

This study presents a post-synthetic ligand modification strategy for the generation of chiroptically active, blue emitting CsPbBr 3 nanoparticles (NPs) - an expansion to the library of 3D chiral perovskite nanomaterials. Addition of [ R - and S -] 1-phenylethylamine, 1-(1-naphthyl)ethylamine, or 2-aminooctane to the synthesized CsPbBr 3 NPs is shown to induce Cotton effects in the NP first exciton transition, suggestive of a successful electronic coupling between the chiral ligands and the NPs. The availability of these chiral CsPbBr 3 NPs thrusts them into the forefront of perovskite nanomaterials for examining the implications of the chiral induced spin selectivity (CISS) effect and other applications in spintronics.

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