Electro-Conductive Single-Molecule Magnet Composed of a Dysprosium(III)-Phthalocyaninato Double-Decker Complex with Magnetoresistance

Tetsu Sato; Brian K Breedlove; Masahiro Yamashita; Keiichi Katoh

doi:10.1002/anie.202102666

Electro-Conductive Single-Molecule Magnet Composed of a Dysprosium(III)-Phthalocyaninato Double-Decker Complex with Magnetoresistance

Angew Chem Int Ed Engl. 2021 Sep 20;60(39):21179-21183. doi: 10.1002/anie.202102666. Epub 2021 Aug 6.

Authors

Tetsu Sato¹, Brian K Breedlove¹, Masahiro Yamashita^{1

2}, Keiichi Katoh³

Affiliations

¹ Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578, Sendai, Japan.
² School of Materials Science and Engineering, Nankai University, Tianjin, 300350, P. R. China.
³ Department of Chemistry, Graduate School of Science, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan.

PMID: 33843121
DOI: 10.1002/anie.202102666

Abstract

A one-dimensional (1D) arrangement of an unsubstituted partially oxidized Dy³⁺ double-decker complex, [DyPc₂ ]I_x (Pc=phthalocyaninato, I=iodide; 1.93<x<2.26) (1), was obtained by using electro-oxidation and chemical oxidation. In 1, the Pc ligands were partially oxidized, and I₃ ^- ion was present as a counter ion. From the results of spectrophotometric analysis on 1, the π radicals were delocalized in a 1D column and behaved as a conductor even at low-temperatures. Since conductivity was observed at temperatures lower than the blocking temperature (T_B ), magnetoresistance (MR) effects corresponding to a magnetic hysteresis of single-molecule magnet (SMM) were observed when the galvanomagnetic characteristics were investigated at 2.2 K.

Keywords: dipolar bias; dysprosium; magnetoresistance; metallic conductivity; single-molecule magnets.

Abstract

Grants and funding