A Photoelectromagnetic 3D Metal-Organic Framework from Flexible Tetraarylethylene-Backboned Ligand and Dynamic Copper-Based Coordination Chemistry

作者：Liu, Haohao; Wang, Shuodong; Huang, Mengfan; Bian, Qilong; Zhang, Yang; Yang, Kun; Li, Bo; Yao, Wenhuan; Zhou, Yizhao; Xie, Sheng^*; Tang, Ben Zhong; Zeng, Zebing^*

来源：Small, 2023.

DOI：10.1002/smll.202306956

• copper-tetrazolate connection
• metal-organic frameworks
• molecular rotors
• solid-state responsive materials

Porous frameworks that display dynamic responsiveness are of interest in the fields of smart materials, information technology, etc. In this work, a novel copper-based dynamic metal-organic framework [Cu3TTBPE6(H2O)2] (H4TTBPE = 1,1,2,2-tetrakis(4 ''-(1H-tetrazol-5-yl)-[1,1 ''-biphenyl]-4-yl)ethane), denoted as HNU-1, is reported which exhibits modulable photoelectromagnetic properties. Due to the synergetic effect of flexible tetraarylethylene-backboned ligands and diverse copper-tetrazole coordination chemistries, a complex 3D tunneling network is established in this MOF by the layer-by-layer staggered assembly of triplicate monolayers, showing a porosity of 59%. These features further make it possible to achieve dynamic transitions, in which the aggregate-state MOF can be transferred to different structural states by changing the chemical environment or upon heating while displaying sensitive responsiveness in terms of light absorption, photoluminescence, and magnetic properties. @@@ By utilizing flexible tetraarylethylenebackbon ligands and diverse copper-tetrazole coordination chemistry, a novel type of dynamic metal-organic frameworks (MOFs) has been designed and constructed, displaying a complex 3D tunneling network, while exhibiting modulable photoelectromagnetic properties. These features allow the transition to different structural states, while displaying sensitive responsiveness in light absorption, photoluminescence, and magnetic properties.image

• 单位
  南昌航空大学; 1