A new europium metal-organic framework with both high proton conductivity and highly sensitive detection of ascorbic acid
A new europium metal-organic framework with both high proton conductivity and highly sensitive detection of ascorbic acid
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一种兼具高质子电导率和高灵敏度抗坏血酸检测的新型铕金属有机骨架
DOI：
10.1039/c8ce01506f
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发表时间：
2018
期刊：
影响因子：
3.1
通讯作者：
Wang Qing-Lun
中科院分区：
文献类型：
--
作者：
Yuan Yue-Ying;Yang Shuai-Liang;Zhang Chen-Xi;Wang Qing-Lun
在溶剂热条件下成功合成了一种新的金属有机骨架（MOF）[{(H3O)[Eu (SBDB)(H2O)2]}n] (H4SBDB = 1,5-二磺基-苯-2,4-二甲酸)(1)。十个中心 Eu3+ 离子由 H4SBDB 配体和两个配位水分子配位。相邻的Eu3+离子通过羧基的氧原子连接，形成一维链。 1D链通过H4SBDB配体连接以诱导2D无限延伸的平面结构，然后通过氢键连接形成3D超网络结构。配合物1表现出优异的热稳定性和化学稳定性。交流阻抗分析表明1的最高质子电导率达到1.0 × 10−4 S cm−1 (338 K, 98% RH)。此外，配合物 1 是一种优异的发光传感器，对水溶液中的抗坏血酸 (AA) 具有高灵敏度和低检测限。
A new metal–organic framework (MOF), [{(H3O)[Eu (SBDB)(H2O)2]}n] (H4SBDB = 1,5-disulfo-benzene-2,4-dicarboxylic acid) (1), was successfully synthesized under solvothermal conditions. Ten central Eu3+ ions are coordinated by the H4SBDB ligands and two coordination water molecules. The adjacent Eu3+ ions are connected by oxygen atoms from carboxyl groups, forming a 1D chain. 1D chains are linked by H4SBDB ligands to induce a 2D infinitely extensible planar structure, and then connected by hydrogen bonds to form a 3D supernetwork structure. Complex 1 exhibits excellent thermal and chemical stability. AC impedance analysis shows that the highest proton conductivity of 1 reaches up to 1.0 × 10−4 S cm−1 (338 K, 98% RH). Furthermore, complex 1 is an excellent luminescence-based sensor with high sensitivity and a low detection limit for ascorbic acid (AA) in aqueous solutions.