Issue 14, 2023

C2O42−-templated cage-shaped Ln28 (Ln = Gd, Eu) nanoclusters with magnetocaloric effect and luminescence

Abstract

The assembly of high-nuclearity lanthanide nanoclusters with favourable magnetocaloric effects suffers from a significant challenge. Herein, two outstanding examples of cage-shaped nanoclusters, namely, [Ln28(IN)25(C2O4)6(HCOO)(μ3-OH)362-OH)2(H2O)36]·8Br·xH2O (Ln = Gd and Eu; x = 21, abbreviated as Gd28; x = 17, abbreviated as Eu28, HIN = isonicotinic acid; H2C2O4 = oxalic acid) have been triumphantly designed and constructed under hydrothermal conditions. The crystallographic study revealed that the aesthetically pleasing triangle-shaped Gd12 subunit and Gd16 subunit built separately from four Gd3 units and four Gd4 units, respectively, are shaped into an unprecedented cage-shaped configuration. Prominently, six small and simple C2O42− anions generated via the in situ reaction of HIN are faultlessly anchored in the cage-shaped framework. Furthermore, the existence of abundant GdIII ions impart Gd28 with a captivating magnetic entropy change (−ΔSmaxm = 37.5 J kg−1 K−1) at 2.0 K for ΔH = 7.0 T.

Graphical abstract: C2O42−-templated cage-shaped Ln28 (Ln = Gd, Eu) nanoclusters with magnetocaloric effect and luminescence

Supplementary files

Article information

Article type
Research Article
Submitted
24 Apr. 2023
Accepted
07 Jūn. 2023
First published
08 Jūn. 2023

Inorg. Chem. Front., 2023,10, 4109-4116

C2O42−-templated cage-shaped Ln28 (Ln = Gd, Eu) nanoclusters with magnetocaloric effect and luminescence

Q. Wang, S. Lu, L. Xu, J. Wang, Y. Yu, X. Bai, H. Mei and Y. Xu, Inorg. Chem. Front., 2023, 10, 4109 DOI: 10.1039/D3QI00743J

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