Issue 5, 2024

Charge transfer-triggered reversible spin-state switching

Abstract

Triggering the spin-state switching (SSS) in solutions at room temperature (RT) has attracted attention in the field of molecular switches. Herein, we report the preparation and switching properties of a ferrous complex Fe(H2Bpz2)2(L-C2H5) (H2Bpz2 = dihydrobis(1-pyrazolyl)borate, L-C2H5 = (4,15-bis[4-(N,N-diethylamino)phenyl][1,2,5]thiadiazolo-[3,4-i]dipyrido[a,c]phenazine)). Upon near-infrared (NIR) laser on, the ferrous complex formed H-aggregation in the solution with enhanced ligand-to-ligand charge transfer, which thus achieved a high-spin state. Upon switching the NIR laser off, the ferrous complex changed to J-aggregation with enhanced intramolecular charge transfer, which resulted in the low-spin state; as a consequence, charge transfer triggered reversible SSS in the solution at RT. More interestingly, further confinement into the solid-state three-dimensional polymer sponge did not affect the SSS performance of the ferrous complex, suggesting the high potential of Fe(H2Bpz2)2(L-C2H5) for practical applications in future molecular electronic and spintronic devices.

Graphical abstract: Charge transfer-triggered reversible spin-state switching

Supplementary files

Article information

Article type
Paper
Submitted
26 Oct 2023
Accepted
19 Dec 2023
First published
20 Dec 2023

J. Mater. Chem. C, 2024,12, 1693-1700

Charge transfer-triggered reversible spin-state switching

Y. Luo, C. Xue, S. Zhang, J. Zhao, X. Jin and M. Liu, J. Mater. Chem. C, 2024, 12, 1693 DOI: 10.1039/D3TC03907B

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