Issue 1, 2024

Spin-crossover tuning of the luminescence in 2D Hofmann-type compounds in bulk and exfoliated flakes

Abstract

The synthesis, structure and magnetic and optical characterization of a new, [FeII(furtrz)2(Pt(CN)4)]·4H2O (1), flexible 2D Hofmann-type material is reported together with the optical characterization of the already reported, [Fe3II(saltrz)6(Pt(CN)4)3]·8H2O (2). Both compounds exhibit in the bulk multi-step thermal SCO. The temperature dependence of the luminescence properties of 2, reported for the first time in this work, show a clear interplay between SCO and luminescence, while in the case of 1, resonant emission shows only a subtle change around the SCO temperature. Thanks to their layered structure and weak interlayer interactions, it has been possible to obtain flakes of micrometric lateral sizes and thicknesses of a few nm of the two compounds using the well-known Scotch tape method. The effect of the miniaturization in the SCO properties and luminescence has been studied by Raman spectroscopy and luminescence. In the case of 2, the abrupt SCO is lost in the exfoliated flakes, while in 1 a clear spin transition is still observed in a plethora of flakes with thicknesses ranging from a few nanometers up to hundreds.

Graphical abstract: Spin-crossover tuning of the luminescence in 2D Hofmann-type compounds in bulk and exfoliated flakes

Supplementary files

Article information

Article type
Paper
Submitted
10 Oct 2023
Accepted
24 Nov 2023
First published
29 Nov 2023
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2024,12, 161-169

Spin-crossover tuning of the luminescence in 2D Hofmann-type compounds in bulk and exfoliated flakes

V. García-López, F. Marques-Moros, J. Troya, J. Canet-Ferrer, M. Clemente-León and E. Coronado, J. Mater. Chem. C, 2024, 12, 161 DOI: 10.1039/D3TC03693F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements