Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Angew Chem Int Ed Engl. 2017 Oct 16;56(43):13283-13287. doi: 10.1002/anie.201703934. Epub 2017 Sep 18.
A huge increase in the magnetization of two coordination chains based on tetravalent octacyanidometalates (W and Mo ) is observed on irradiation with 436 nm light, while no such behavior is observed for the Nb analogue. A photomagnetic response based solely on [W (CN) ] is demonstrated for the first time. The observed behavior is attributed to the light-induced excited spin state trapping (LIESST) effect at the octacyanidometalate, and to the resulting magnetic exchange ON/OFF photoswitching between the Mn center and the photoinduced high-spin (S=1) W or Mo centers.
在 436nm 光照射下，观察到基于四价八氰合金属（W 和 Mo）的两个配位链的磁化强度大幅增加，而 Nb 类似物则没有这种行为。首次证明了仅基于 [W(CN) ]的光磁响应。观察到的行为归因于八氰合金属的光致激发态捕获（LIESST）效应，以及 Mn 中心与光诱导的高自旋（S=1）W 或 Mo 中心之间的磁交换 ON/OFF 光开关。
