期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 -, 期 -, 页码 2533-2541出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.3c004252533
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In this study, the enantioselective synthesis of intrinsically chiral perovskite-like CsCuCl3 nanocrystals was achieved at room temperature using chiral amino acids as additives in an antisolvent crystallization method. The resulting D-/L-ligand-induced enantiomeric nanocrystals exhibited characteristic chiroptical responses. By adjusting the amino acid types and Cs/Cu feed ratios, the chiroptical activity of the nanocrystals could be controlled. This research opens up new pathways for the controllable synthesis of intrinsically chiral inorganic materials and provides a better understanding of the origins of precursor-ligand-associated chiral discrimination and crystallization phenomena.
Enantiomeric control of intrinsically chiral inorganic nanocrystals (NCs), despite being reported in few systems over the past years, still remains a challenging task. Here, we succeeded in the enantioselective synthesis of intrinsically chiral perovskite-like CsCuCl3 NCs in the presence of chiral amino acids using an antisolvent crystallization method at room temperature. The D-/L-ligand-induced enantiomeric NCs showed the relevant characteristic chiroptical responses. Interestingly, under the addition of each D- or L-form of the ligand, the chiroptical activity of the NCs could be tailored through facilely tuning the Cs/Cu feed ratios and amino acid types. The polarity of such amino acids and their coordination configurations with the NC structures contributed to the distinct behaviors. The ability to manipulate the ligand-induced enantioselective strategy would open pathways for the controllable synthesis of intrinsically chiral inorganics and enable a better understanding of the origins of precursor-ligandassociated chiral discrimination and crystallization phenomena.
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