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Programmable spin-state switching in a mixed-valence spin-crossover iron grid

Matsumoto, Takuto; Newton, Graham N.; Shiga, Takuya; Hayami, Shinya; Matsui, Yuta; Okamoto, Hiroshi; Kumai, Reiji; Murakami, Youichi; Oshio, Hiroki

Authors

Takuto Matsumoto

Takuya Shiga

Shinya Hayami

Yuta Matsui

Hiroshi Okamoto

Reiji Kumai

Youichi Murakami

Hiroki Oshio



Abstract

Photo-switchable systems, such as discrete spin-crossover complexes and bulk iron–cobalt Prussian blue analogues, exhibit, at a given temperature, a bistability between low- and high-spin states, allowing the storage of binary data. Grouping different bistable chromophores in a molecular framework was postulated to generate a complex that could be site-selectively excited to access multiple electronic states under identical conditions. Here we report the synthesis and the thermal and light-induced phase transitions of a tetranuclear
iron(II) grid-like complex and its two-electron oxidized equivalent. The heterovalent grid is thermally inactive but the spin states of its constituent metal ions are selectively switched using different laser stimuli, allowing the molecule to exist in three discrete phases. Site-selective photo-excitation, herein enabling one molecule to process ternary data, may have major ramifications in the development of future molecular memory storage technologies.

Citation

Matsumoto, T., Newton, G. N., Shiga, T., Hayami, S., Matsui, Y., Okamoto, H., …Oshio, H. (2014). Programmable spin-state switching in a mixed-valence spin-crossover iron grid. Nature Communications, 5, 1-8. https://doi.org/10.1038/ncomms4865

Journal Article Type Article
Acceptance Date Apr 11, 2014
Online Publication Date May 15, 2014
Publication Date May 15, 2014
Deposit Date Sep 12, 2017
Publicly Available Date Mar 29, 2024
Journal Nature Communications
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 5
Article Number 3865
Pages 1-8
DOI https://doi.org/10.1038/ncomms4865
Public URL https://nottingham-repository.worktribe.com/output/1103164
Publisher URL https://www.nature.com/articles/ncomms4865
PMID 24832549

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