Induction of Chirality in Atomically Thin ZnSe and CdSe Nanoplatelets: Strengthening of Circular Dichroism via Different Coordination of Cysteine-Based Ligands on an Ultimate Thin Semiconductor Core.

Autor: Kurtina DA; Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia., Grafova VP; Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia., Vasil'eva IS; A. N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, Bld. 2, 119071 Moscow, Russia., Maksimov SV; Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia., Zaytsev VB; Department of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia., Vasiliev RB; Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.; Department of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia.
Jazyk: angličtina
Zdroj: Materials (Basel, Switzerland) [Materials (Basel)] 2023 Jan 26; Vol. 16 (3). Date of Electronic Publication: 2023 Jan 26.
DOI: 10.3390/ma16031073
Abstrakt: Chiral nanostructures exhibiting different absorption of right- and left-handed circularly polarized light are of rapidly growing interest due to their potential applications in various fields. Here, we have studied the induction of chirality in atomically thin (0.6-1.2 nm thick) ZnSe and CdSe nanoplatelets grown by a colloidal method and coated with L-cysteine and N-acetyl-L-cysteine ligands. We conducted an analysis of the optical and chiroptical properties of atomically thin ZnSe and CdSe nanoplatelets, which was supplemented by a detailed analysis of the composition and coordination of ligands. Different signs of circular dichroism were shown for L-cysteine and N-acetyl-L-cysteine ligands, confirmed by different coordination of these ligands on the basal planes of nanoplatelets. A maximum value of the dissymmetry factor of (2-3) × 10 -3 was found for N-acetyl-L-cysteine ligand in the case of the thinnest nanoplatelets.
Databáze: MEDLINE
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