Issue 44, 2023

Extended π-conjugation: a key to magnetic anisotropy preservation in highly reactive porphyrins

Abstract

In this study, the magnetic anisotropy of metal complexes is explored for its crucial role in the development of molecular materials for cutting-edge applications in spintronics, memory storage, and quantum computing. The challenge of achieving maximum magnetic anisotropy for paramagnetic single nickel ion sites is addressed and realized through an on-surface thermally induced planarization reaction in tetraphenylporphyrin, which maintains the nickel species in a square planar coordination environment. At the same time, the effective ligand field reduction due to the increased π-conjugation results in a lower reactivity of the molecular species. The results herein reported showcase the synergy between magnetic anisotropy and chemical robustness in single-site magnetic materials, thus opening exciting prospects for the development of stable uniaxial anisotropy in these materials. Such a finding represents a relevant advance in the field and validates a protocol for exploring magnetic anisotropy in metal complexes.

Graphical abstract: Extended π-conjugation: a key to magnetic anisotropy preservation in highly reactive porphyrins

Supplementary files

Article information

Article type
Paper
Submitted
01 avq 2023
Accepted
22 okt 2023
First published
23 okt 2023
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2023,11, 15521-15530

Extended π-conjugation: a key to magnetic anisotropy preservation in highly reactive porphyrins

I. Cojocariu, S. Carlotto, D. Baranowski, M. Jugovac, J. Dreiser, L. Schio, L. Floreano, M. Casarin, V. Feyer and C. M. Schneider, J. Mater. Chem. C, 2023, 11, 15521 DOI: 10.1039/D3TC02726K

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