Issue 33, 2018

Multifunctional luminescent magnetic cryocooler in a Gd5Mn2 pyramidal complex

Abstract

Magnetic cooling is a highly efficient refrigeration technique with the potential of replacing expensive and rare helium-3 in the field of ultra-low temperature cooling. However, the visualization of a cryogen at an extremely low temperature and in a strong magnetic field is challenging, but it is crucial for the precise positioning and in situ thermal probe measurements in potential practical applications. Here, the activation of a red-emissive Mn(II) ion using 3d/4f chemistry produces a luminescent molecule cooler, [Gd5Mn2(LOMe)2(OH)4(Ac)6(MeOH)10Cl2]Cl3·2MeOH (1), with the core of an Mn(II)-anchored heptanuclear [GdIII5MnII2] pyramid. The photoluminescence (PL) of the Mn2+ emission, with a large Stokes shift (λem ∼ 690 nm) from 4T1(4G) → 6A1(6S), shows not only a sensitive temperature sensing property but also reversible mechanoluminescence (ML). More attractively, these findings reveal a considerable magnetocaloric effect (MCE) coupled with a tunable emission window, opening up new opportunities in the multifunctional applications of PL, ML, and the MCE involving red-light sources, thermometers, and stress imaging. In particular, this provides a novel resolution to design visualized PL coolers.

Graphical abstract: Multifunctional luminescent magnetic cryocooler in a Gd5Mn2 pyramidal complex

Supplementary files

Article information

Article type
Communication
Submitted
18 Jan 2018
Accepted
02 Feb 2018
First published
16 Feb 2018

Chem. Commun., 2018,54, 4104-4107

Multifunctional luminescent magnetic cryocooler in a Gd5Mn2 pyramidal complex

W. Huang, S. Huang, M. Zhang, Y. Chen, G. Zhuang, Y. Li, M. Tong, J. Yong, Y. Li and D. Wu, Chem. Commun., 2018, 54, 4104 DOI: 10.1039/C8CC00433A

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