Wang Xia, Wang Yanlong, Silver Mark A, Gui Daxiang, Bai Zhuanling, Wang Yaxing, Liu Wei, Chen Lanhua, Diwu Juan, Chai Zhifang, Wang Shuao
State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China.
Chem Commun (Camb). 2018 Apr 26;54(35):4429-4432. doi: 10.1039/c8cc00572a.
Although no evident hydrogen-bond network appears, an ultrahigh proton conductivity of 2.91 × 10-2 S cm-1 at 363 K and 90% RH with an ultralow activation energy of 0.10 eV was observed in an anionic lanthanide-organic framework Na2[Eu(SDB)2(COO)]·0.375DMF·0.4H2O (1); both values approach the records among all reported proton-conducting MOF materials. This suggests that the proton conduction process in 1 is reminiscent of the Grotthuss mechanism, which together reveals an effective proton transportation pathway associated with aligned Na+ and their coordinated water.
尽管没有明显的氢键网络出现，但在阴离子镧系有机框架Na2[Eu(SDB)2(COO)]·0.375DMF·0.4H2O(1)中，在363 K和90%相对湿度下观察到了2.91×10-2 S cm-1的超高质子传导率以及0.10 eV的超低活化能；这两个值均接近所有已报道的质子传导MOF材料中的记录。这表明1中的质子传导过程让人联想到Grotthuss机制，这共同揭示了与排列的Na+及其配位水相关的有效质子传输途径。
