Photoinduced metal-to-metal charge transfer toward single-chain magnet

Tao Liu; Yan-Juan Zhang; Shinji Kanegawa; Osamu Sato

doi:10.1021/ja1027953

Photoinduced metal-to-metal charge transfer toward single-chain magnet

J Am Chem Soc. 2010 Jun 23;132(24):8250-1. doi: 10.1021/ja1027953.

Authors

Tao Liu¹, Yan-Juan Zhang, Shinji Kanegawa, Osamu Sato

Affiliation

¹ Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Fukuoka 816-8580, Japan.

PMID: 20507118
DOI: 10.1021/ja1027953

Abstract

Single-chain magnets (SCMs) that exhibit slow relaxation of their magnetization are attracting considerable attention. To tune the properties of such materials with external stimuli such as light, heat, and pressure is a challenge. Through the exploitation of light and heat induced transformation between diamagnetic Fe(II)(LS)(mu-CN)Co(III)(LS) (LS = low spin) units and paramagnetic Fe(III)(LS)(mu-CN)Co(II)(HS) (HS = high spin) units, we show the photoswitched transformation from a paramagnetic state to an antiferromagnetic ordered SCM state and the thermally induced reverse transformation, thus providing an effective way to control the spin topology of the SCM via light or a thermally induced metal-to-metal charge transfer.