Issue 38, 2024

Synthesis, optical, electronic and magnetic studies of air-stable chiral Cu(ii) chlorides

Abstract

Chiral magnetic metal halide semiconductors (MHSs) have recently emerged as a unique platform of hybrid materials for state-of-the-art applications, where both chiroptical and magnetic properties are essential. Motivated by the scarcity of MHS compounds that feature the latter traits and the absence of relevant structure–property relationships, we present here the synthesis and the optical, electronic, and magnetic properties of two new polar 0D, Cu(II) based materials, namely (S-/R-THBTD)2CuCl6, where THBTD = 4,5,6,7-tetrahydro-benzothiazole-2,6-diamine. Both enantiomers exhibit direct and indirect optical bandgap characteristics based on UV-vis and density functional theory (DFT) calculations, while circular dichroism (CD) measurements confirmed their chiral character. Magnetometry measurements revealed a notable transition from a paramagnetic to a ferromagnetic-like state at around 4 K, with a low-temperature saturation magnetization value of up to 9.86 emu g−1, which is among the highest reported for chiral magnetic MHSs. Notably, (S-/R-THBTD)2CuCl6 maintain their structural integrity and magnetic and optical properties (based on UV-vis studies) after one year of air exposure, a record stability performance among chiral magnetic MHSs. This work proves that air-stable MHSs with competitive chiroptical and magnetic properties can be acquired by properly selecting suitable templating agents, paving the way for further materials development.

Graphical abstract: Synthesis, optical, electronic and magnetic studies of air-stable chiral Cu(ii) chlorides

Supplementary files

Article information

Article type
Paper
Submitted
30 Apr 2024
Accepted
29 Aug 2024
First published
13 Sep 2024
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2024,12, 25730-25739

Synthesis, optical, electronic and magnetic studies of air-stable chiral Cu(II) chlorides

A. Azmy, N. W. Y. A. Y. Mudiyanselage, K. E. S. Nassar, M. Pham, N. Zibouche, M. Phan and I. Spanopoulos, J. Mater. Chem. A, 2024, 12, 25730 DOI: 10.1039/D4TA03010A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements