| Determination of Surface pKa of Pure Mercaptoacetic Acid and 2-Mercaptobenzothiazole Mixed Monolayers by Impedance Titration |
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| 引用本文： | GuangHanLU ChuanYinLIU HongYanZHAO WeiLIU LiPingJIANG LingYanJIANG. Determination of Surface pKa of Pure Mercaptoacetic Acid and 2-Mercaptobenzothiazole Mixed Monolayers by Impedance Titration[J]. 中国化学快报, 2004, 15(7): 827-830 |
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| 作者姓名： | GuangHanLU ChuanYinLIU HongYanZHAO WeiLIU LiPingJIANG LingYanJIANG |
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| 作者单位： | [1]Collegeofchemistry,CentralChinaNormalUniversity,Wuhan430079 [2]DepartmentofChemistry,YunyangTeacher＇sCollege,DanjiangkouHubei442700 |
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| 摘 要： | Interfacial proton transfer reactions of pure mercaptoacetic acid (MA) and 2-mercaptobenzothiazole (Mbz) mixed self-assembled monolayers (SAMs) have been studied using a.c. impedance titration method. The charge-transfer resistance (Rct) is measured with the monolayer composition and the ionic strength ofpH solution. The surface pKa can be obtained by the plots of Rct and pH, the reasons of shifts of surface pKa are also explained.
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| 关 键 词： | 阻抗滴定 硫氢基乙酸 2-硫氢基苯并噻唑 pKa表面 自组装 |
Determination of Surface pKa of Pure Mercaptoacetic Acid and 2- Mercaptobenzothiazole Mixed Monolayers by Impedance Titration |
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| Guang Han LU,Chuan Yin LIU,Hong Yan ZHAO,Wei LIU,Li Ping JIANG,Ling Yan JIANGCollege of chemistry,Central China Normal University,Wuhan. Determination of Surface pKa of Pure Mercaptoacetic Acid and 2- Mercaptobenzothiazole Mixed Monolayers by Impedance Titration[J]. Chinese Chemical Letters, 2004, 15(7): 827-830 |
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| Authors: | Guang Han LU Chuan Yin LIU Hong Yan ZHAO Wei LIU Li Ping JIANG Ling Yan JIANGCollege of chemistry Central China Normal University Wuhan |
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| Affiliation: | Guang Han LU,Chuan Yin LIU,Hong Yan ZHAO,Wei LIU,Li Ping JIANG,Ling Yan JIANGCollege of chemistry,Central China Normal University,Wuhan 430079 Department of Chemistry,Yunyang Teacher's College,Danjiangkou Hubei 442700 |
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| Abstract: | Interfacial proton transfer reactions of pure mercaptoacetic acid (MA) and 2-mercaptobenzothiazole (Mbz) mixed self-assembled monolayers (SAMs) have been studied using a.c. impedance titration method. The charge-transfer resistance (Rct,) is measured with the monolayer composition and the ionic strength of pH solution. The surface pKa can be obtained by the plots of Rct and pH, the reasons of shifts of surface pKa are also explained. |
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| Keywords: | A.c.impedance titration mercaptoacetic acid 2-mercaptobenzothiazole self-assembled monolayers surface pKa. |
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