Two Water Stable Phosphate‐Amidinium Based Hydrogen‐Bonded Organic Framework with Proton Conduction
Shihe Zheng, Lu Li, Liangji Chen, Zhiwen Fan, Fahui Xiang, Yisi Yang, Zhangjing Zhang, Shengchang Xiang
Abstract
Abstract Two water stable phosphate‐amidinium charge‐assisted hydrogen‐bonded organic frameworks (HOFs), HOF‐FJU‐12 ([DPBA⋅PAM] 0.5 ⋅ 0.2DMF⋅H 2 O) and HOF‐FJU‐13 ([DPBA ⋅ 1.5PAM] ⋅ 1.5DMF⋅H 2 O) (DPBA=3,5‐diphosphonobenzoic acid, PAM=terephtalimidamide, DMF= N , N ‐Dimethylformamide) have been synthesized and structurally characterized. Single‐crystal X‐ray diffraction shows that HOF‐FJU‐13 is a layered structure with continuous hydrogen‐bonding networks along a axis, which plays an important role in proton conduction. The highest proton conductivity of HOF‐FJU‐13 (1.14×10 −4 S/cm) is about 7.4 times higher than that of HOF‐FJU‐12 (1.54×10 −5 S/cm) under the conditions of 60 °C and 98 % relative humidity.