镧系元素
单分子磁体
蒽
超分子化学
镝
单晶
结晶学
化学
分子
材料科学
磁滞
晶体结构
磁化
光化学
凝聚态物理
无机化学
有机化学
离子
物理
磁场
量子力学
作者
Xin‐Da Huang,Xiu‐Fang Ma,Li‐Min Zheng
标识
DOI:10.1002/anie.202300088
摘要
Photo-responsive lanthanide-based single-molecule magnets (SMM) hold great promise for future switching and memory devices. Herein, we report a dysprosium phosphonate [DyIII (SCN)2 (NO3 )(depma)2 (4-hpy)2 ] (1Dy), which features a supramolecular framework containing layers of hydrogen-bonding network and pillars of π-π interacted anthracene units. The photocycloaddition reaction of anthracene pairs led to a rapid and reversible single-crystal-to-single-crystal (SC-SC) structural transition to form the 1D coordination polymer [DyIII (SCN)2 (NO3 )(depma2 )(4-hpy)2 ]n (2Dy), accompanied by photoswitchable SMM properties with the reduction of effective energy barrier by half and the narrowing of the butterfly-like hysteresis loop. The diluted sample showed a photo-induced switch of the blocking temperature (TB ) from 3.8 K for 1Dy@Y to 2.6 K for 2Dy@Y. This work may inspire the construction of lanthanide-based molecular materials with targeted photo-responsive magnetic properties.
科研通智能强力驱动
Strongly Powered by AbleSci AI