Giant Pockels effect of polar organic solvents and water in the electric double layer on a transparent electrode
Giant Pockels effect of polar organic solvents and water in the electric double layer on a transparent electrode
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透明电极双电层中极性有机溶剂和水的巨普克尔斯效应
DOI：
10.1039/c7ra05875f
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发表时间：
2017
期刊：
影响因子：
3.9
通讯作者：
and E. Tokunaga
中科院分区：
文献类型：
--
作者：
H. Kanemaru;S. Yukita;H. Namiki;Y. Nosaka;T. Kobayashi;and E. Tokunaga
研究了极性有机溶剂和水在氧化铟锡电极上的普克尔效应，发现水的普克尔系数最大(2 30 pV−1)，其次是甲醇(2 0 0 pV−1)、乙醇(84 pV−1)和二甲基亚砜(2 0 pV−1)。水和甲醇的电解质溶液的Pockels系数几乎相同，而乙醇和DMSO溶液的Pockels系数分别比甲醇溶液小2倍和10倍。Pockels系数与氢键强度(或平均团簇大小)除以溶剂粘度的比例很好。这表明氢键和粘度在这些液体的普克尔效应机制中起着至关重要的作用。
The Pockels effect of polar organic solvents and water within the electric double layer (EDL) on an indium–tin–oxide (ITO) electrode is studied to find that water has the largest Pockels coefficient (230 pm V−1), followed in order by methanol (200 pm V−1), ethanol (84 pm V−1), and dimethyl sulfoxide (DMSO) (20 pm V−1). Electrolyte solutions of water and methanol have nearly the same magnitude of Pockels coefficient, while ethanol and DMSO solutions exhibit two and ten times smaller Pockels coefficients than the methanol solution, respectively. The Pockels coefficient scales well with the hydrogen-bond strength (or average cluster size) divided by the solvent viscosity. This suggests that hydrogen bonding and viscosity play crucial roles in the mechanism of the Pockels effect of these liquids.