二维交织金属有机框架中结构转变促进质子传导率提高
Enhanced Proton Conductivity Promoted by Structural Transition in a 2D Interwoven Metal-Organic Framework.
作者信息
Chen Xi, Kaeosamut Nippich, Sapchenko Sergei, Han Xue, Mei Qingqing, Li Ming, Vitorica-Yrezabal Inigo J, Hughes Lewis, Yang Sihai, Schröder Martin
机构信息
Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
College of Chemistry Beijing Normal University, Beijing 100875, China.
出版信息
Cryst Growth Des. 2024 Dec 24;25(2):281-286. doi: 10.1021/acs.cgd.4c01279. eCollection 2025 Jan 15.
We report enhanced proton conductivity promoted by a structural phase transition of MFM-504(Cu)-DMF to MFM-504(Cu)-MeOH and to MFM-504(Cu)-OH via ligand substitution upon exposure to MeOH and HO vapors, respectively. MFM-504(Cu)-DMF can be synthesized by the solvothermal reaction of Cu(NO)·3HO and the flexible zwitterionic ligand, imidazolium-1,3-bis(methylenedicarboxylate) (imidc), to afford a unique layered interwoven network structure. MFM-504(Cu)-OH shows a proton conductivity of 5.01 × 10 S cm at 80 °C and 99% relative humidity (RH) with an activation energy ( ) of 0.80 eV, indicating a vehicle mechanism within MFM-504(Cu)-OH.
我们报道了通过分别暴露于甲醇和水蒸气时配体取代，将MFM-504（Cu）-DMF转变为MFM-504（Cu）-MeOH以及MFM-504（Cu）-OH的结构相变促进了质子传导率的提高。MFM-504（Cu）-DMF可通过Cu（NO）·3HO与柔性两性离子配体咪唑鎓-1,3-双（亚甲基二羧酸酯）（imidc）的溶剂热反应合成，以提供独特的层状交织网络结构。MFM-504（Cu）-OH在80°C和99%相对湿度（RH）下显示出5.01×10 S cm的质子传导率，活化能（）为0.80 eV，表明在MFM-504（Cu）-OH内存在载体机制。
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