High Proton Conduction in Two CoII and MnII Anionic Metal–Organic Frameworks Derived from 1,3,5-Benzenetricarboxylic Acid

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• 作者：Sui-Jun Liu ; Chen Cao ; Fan Yang ; Mei-Hui Yu ; Shu-Li Yao ; Teng-Fei Zheng ; Wei-Wei He ; Hai-Xia Zhao ; Tong-Liang Hu ; Xian-He Bu
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：December 7, 2016
• 年：2016
• 卷：16
• 期：12
• 页码：6776-6780
• 全文大小：382K
• ISSN：1528-7505

文摘

Isostructural Co^II and Mn^II organic frameworks with anionic frameworks and counterions (Me₂NH₂)⁺, namely {[M₂Cl₂(BTC)_4/3]·(Me₂NH₂)⁺₂·4/3H₂O}_n (M = Co (1) and Mn (2)), have been constructed by one-pot synthesis. Complexes 1 and 2 take paddle-wheel-like dinuclear metal cluster-based three-dimensional structures. Thermogravimetric analysis and variable-temperature powder X-ray diffraction spectra suggested that 1 displays better thermal stability than 2. Both exhibit relatively high proton conductivities at 65% relative humidity (RH) and room temperature (σ > 2.5 × 10^–4 S cm^–1); however, complex 1 possesses the better cycling capability and stability with E_a = 0.21 eV under 65% RH.