Rigid Dysprosium(Ⅲ)Single-Molecule Magnets Exhibit Preserved Superparamagnetism in Solution  

作　　者：Xiali Ding Qiancheng Luo Yuanqi Zhai Xufeng Zhang Yi Lv Xinliang Zhang Chao Ke Chao Wu Yanzhen Zheng 

机构地区：[1]Frontier Institute of Science and Technology(FIST),State Key Laboratory of Mechanical Behavior for Materials,MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter,Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry,School of Chemistry and School of Physics,Xi'an Jiaotong University,99 Yanxiang Road,Xi'an,Shaanxi,710054 China [2]Department of Hepatobiliary Surgery and The First Affiliated Hospital of Xi'an Jiaotong University,277 West Yanta Road,Xi'an,Shaanxi,710061 China [3]Department of Spine Surgery,Honghui Hospital,Xi'an Jiaotong University,76 Nanguo Road,Xi'an,Shaanxi,710054 China [4]Department of Orthopaedics and Trauma,Hong Hui Hospital,College of Medicine,Xi'an Jiaotong University,555 East Youyi Road,Xi'an,Shaanxi,710054 China

出　　处：《Chinese Journal of Chemistry》2022年第5期563-570,共8页中国化学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.21773130,21871219 and 21971203);the Key Laboratory Construction Program of Xi'an Municipal Bu-reau of Science and Technology(No.201805056ZD7CG40);the Key Scientific and Technological Innovation Team of Shaanxi Province(No.2020TD-001);the Fundamental Research Funds for Central Universities。

摘　　要：Molecules with long preserved magnetic moments are perceived as the smallest units for storing bytes,which could bring a new revolution for information technology.However,the rational design of such molecules remains challenging.Here two rigid adamantanol ligand based dysprosium(III)complexes([Dy(1-AdO)_(2)(py)_(5)]BPh_(4)-1 and[Dy(2-AdO)_(2)(py)_(5)]BPh_(4)-2)with pentagonal-bipyramidal coordination geometry and local D5h symmetry were successfully prepared,which display excellent single-molecule magnet(SMM)behavior(U_(eff)≈1835 K,T_(B)_(ZFC)≈24 K,T_(B)^(100s)≈17 K and T_(B)^(H)=23 K for 1;U_(eff)≈1756 K,T_(B)^(ZFC)≈20 K,T_(B)^(100s)≈16 K and T_(B)^(H)=23 K for 2)due to the much weakened vibration in low energy regimes.Remarkably,the large energy barriers and high blocking temperatures for these two complexes in solid states are well preserved in solution.This is never observed in previous studies of SMMs,indicating that the adamantanol is rigid and can be introduced to make the composed molecules stable enough to maintain the solid state magnetic property in solution.

关 键 词：Molecularmagnets LANTHANIDE D_(sh)-symmetry SUPERPARAMAGNETISM SOLUTION 

分 类 号：O6[理学—化学]