A Hydrophobicity Scale of Heteropoly- and Isopolyanions Based on Voltammetric Studies of Their Transfer at the Nitrobenzene/Water Interface.
A Hydrophobicity Scale of Heteropoly- and Isopolyanions Based on Voltammetric Studies of Their Transfer at the Nitrobenzene/Water Interface.
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基于硝基苯/水界面转移的伏安研究的杂多阴离子和异多阴离子的疏水性尺度。
DOI：
10.1246/bcsj.66.1111
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发表时间：
1993
影响因子：
4
通讯作者：
A. Saito
中科院分区：
文献类型：
--
作者：
T. Osakai;H. Katano;K. Maeda;S. Himeno;A. Saito
基于伏安法研究杂多阴离子和同聚阴离子在硝基苯（NB）/水（W）界面上的迁移，提出了杂多阴离子和同聚阴离子的疏水性标度。对于不同尺寸和离子电荷（z = −2至−6）的聚阴离子，标准离子转移电位（ΔOWφ）与转移的吉布斯自由能相关，为ΔOWφ = −ΔGtrO→W/zF（F，法拉第常数），与量呈线性关系。|z|/n2/3（n，聚阴离子结构中氧原子的数目），其应与聚阴离子的表面电荷密度成比例。的价值|z|/n ~ 2/3可作为评价聚阴离子的疏水（或亲水）性质，包括在溶液中的稳定性和在有机溶剂中的可萃取性的有用标准。
A hydrophobicity scale of heteropoly- and isopolyanions is proposed on the basis of voltammetric studies concerning their transfer at the nitrobenzene (NB)/water (W) interface. For polyanions of various size and ionic charge (z = −2 to −6), the standard ion-transfer potential (ΔOWφ), which is related to the Gibbs free energy of the transfer as ΔOWφ = −ΔGtrO→W/zF (F, the Faraday constant), depends linearly on the quantity |z|/n2/3 (n, the number of oxygen atoms in the polyanion structure), which should be proportional to the surface charge density of the polyanion. The value of |z|/n2/3 may provide a useful criterion for evaluating the hydrophobic (or hydrophilic) properties of polyanions, including the stability in solutions and extractability into organic solvents.