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首页> 外文期刊>Inorganic Chemistry Communications >Highly proton-conductive copper coordination polymer, H_2dtoaCu (H_2dtoa = dithiooxamide anion)
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Highly proton-conductive copper coordination polymer, H_2dtoaCu (H_2dtoa = dithiooxamide anion)

机译:高质子传导性铜配位聚合物H_2dtoaCu(H_2dtoa =二硫代草酰胺阴离子)

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摘要

Room-temperature proton conductivity, coordination geometry, and pore-diameter distribution of the title Cu(II) coordination polymer have been investigated by AC conductivity, EXAFS, and N_2 adsorption isotherm measurements. The AC proton conductivity (sigma_p) obtained from Cole-Cole plot analysis under relative humidity of 75% and 300 K exhibits a considerable high value of 10~(-6) S cm~(-1) as a room-temperature sigma_p. The mechaism of proton conduction seems to be similar to that of a proton-exchange membrane, Nafion, which contains much cluster of water molecules in the porous space of the polymer. The present Cu coordination polymer was revealed to possess porous spaace of about 6 A, which includes much water molecules more than 10H_2O per unit cell. The dimeric Cu(II) square-planar coordination geometry was confirmed by EXAFS analysis using synchrotron radiation source at SPring-8.
机译:通过交流电导率,EXAFS和N_2吸附等温线研究了标题Cu(II)配位聚合物的室温质子电导率,配位几何结构和孔径分布。通过Cole-Cole图分析获得的交流质子电导率(sigma_p)在相对湿度为75%和300 K的情况下表现出相当高的10〜(-6)S cm〜(-1)室温值。质子传导的机制似乎类似于质子交换膜Nafion的机制,Nafion在聚合物的多孔空间中包含许多水分子簇。揭示了本发明的Cu配位聚合物具有约6A的多孔空间,其中每单位细胞包含大于10H_2O的许多水分子。通过使用SPring-8同步辐射源进行EXAFS分析,确认了二聚体Cu(II)的方形平面配位几何。

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