Issue 16, 2023

Dynamic CPL switching realized in chiral Mn-based metal halides with reversible thermochromism

Abstract

Circularly polarized luminescence (CPL) active materials have attracted much attention due to their extensive applications in 3D optical displays and encrypted transmission. The switchable regulation of CPL is of great importance for applications such as spintronics. However, the study of intelligent regulation is scarce, especially the simultaneous regulation of the color and direction of polarization. In this paper, we have successfully prepared switchable CPL active Mn-based metal halides (R-/S-Br-MBA)3MnBr5, whose single crystal displays orange CPL at 634 nm at room temperature. With the increase of temperature, the CPL displayed by single crystals gradually turns into green at 520 nm and the CPL signal flips, variable emission color and CPL switch in +/− are achieved in the prepared chiral manganese halides. This emission switch of wavelength and handedness is reversible. The reversible transition of CPL emission wavelength is attributed to the change of emission with temperature. However, the sign reversal of CPL with temperature is due to the change of spin polarization during the transition from self-trapped emission to Mn2+ d–d transition emission. The CPL materials with switchable handedness and emission wavelength have great potential applications in information processing and intelligent sensors.

Graphical abstract: Dynamic CPL switching realized in chiral Mn-based metal halides with reversible thermochromism

Supplementary files

Article information

Article type
Paper
Submitted
15 Dec 2022
Accepted
22 Mar 2023
First published
24 Mar 2023

J. Mater. Chem. C, 2023,11, 5461-5468

Dynamic CPL switching realized in chiral Mn-based metal halides with reversible thermochromism

T. Zhang, H. Kang, B. Li, J. Zhou, P. Zhao, T. Zhao, X. Li and S. Jiang, J. Mater. Chem. C, 2023, 11, 5461 DOI: 10.1039/D2TC05349G

To request permission to reproduce material from this article, 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 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