Telltale diamagnetism at 50 K of a coordination polymer system

作者：He, Jun^*; Ye, Xinhe; Liu, Zhiqing; Tang, Liangming; Hu, Jieying; Xu, Zhengtao^*

来源：Materials Research Letters, 2022, 10(7): 496-500.

DOI：10.1080/21663831.2022.2057822

• Mercapto-carboxyl (QiuSuo) synergy
• coordination polymers
• strong diamagnetism
• ferromagnetism
• electronic doping

IMPACT STATEMENT A versatile open layered platform for potential superconductivity, this coordination polymer system is suited for doping: micropores for O-2 oxidation, and mu(2)-OH2 units to effect charge balance (by forming mu(2)-OH-). @@@ The synthesis of coordination polymers (e.g. Prussian blue) is as old as modern chemistry itself, but never stops surprising people. We here report superconductivity observed of a designer coordination polymer system sporting the chemically soft mercaptan and hard carboxyl groups. The mercapto-carboxyl (dubbed Mercarb, or QiuSuo in Mandarin Pinyin) synergy hints at Daoism and here carries over from the molecular to the solid state: the soft sulfur donors bond with Co2+/Ni2+ (or other transition metal ions) to afford 2D sheets for charge transport, while the interlayer metal-carboxylate domain is more ionic and mediates the transition into the superconductive state.

• 单位
  广东工业大学