Determination of surface pKaof pure and mixed mercaptoacetic acid self-assembled monolayers by impedance titration

被引：0
|
作者：
Liu, CY
Jiang, LY
Zheng, D
Li, YM
Lu, GH [1 ]
机构：
[1] Yunyang Teachers Coll, Dept Chem, Danjiangkou 442700, Peoples R China
[2] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China
来源：
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2005年 / 33卷 / 08期
关键词：
alternating current impedance titration; mercaptoacetic acid; self-assembled monolayers; surface acidity;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The dissociation properties of acidic group on pure and mixed mercaptoacetic acid self-assembled monolayers (SAMs) were investigated by cyclic voltammetry and alternating current impedance. The surface pK(a) was obtained from the impedance titration curves. The effects of composition of SAMs and ionic strength on the acidic dissociation properties of SAMs have also been studied. The mechanism of the influence was explained by hydrogen bonding, hydrophobicity and intermolecular interactions.
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页码：1171 / 1174
页数：4
相关论文
共 14 条
  • [1] BEI N, 2002, CHINESE J ANAL CHEM, V30, P627
  • [2] BRAIN CD, 1989, LANGMUIR, V5, P1370
  • [3] HUIBO S, 2003, CHINESE J ANAL CHEM, V31, P874
  • [4] Double-layer-capacitance titration of self-assembled monolayers of ω-functionalized alkanethiols on Au(111) surface
    Kakiuchi, T
    Iida, M
    Imabayashi, S
    Niki, K
    [J]. LANGMUIR, 2000, 16 (12) : 5397 - 5401
  • [5] Faradaic impedance titration of pure 3-mercaptopropionic acid and ethanethiol mixed monolayers on gold
    Kim, K
    Kwak, J
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 512 (1-2) : 83 - 91
  • [6] Electrostatic interactions at self assembled molecular films of charged thiols on gold
    Molinero, V
    Calvo, EJ
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 445 (1-2): : 17 - 25
  • [7] An indirect laser-induced temperature jump determination of the surface pKa of 11-mercaptoundecanoic acid monolayers self-assembled on gold
    Smalley, JF
    Chalfant, K
    Feldberg, SW
    Nahir, TM
    Bowden, EF
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (10): : 1676 - 1685
  • [8] The effect of electrolyte concentration on the chemical force titration behavior of ω-functionalized SAMs:: Evidence for the formation of strong ionic hydrogen bonds
    Smith, DA
    Wallwork, ML
    Zhang, J
    Kirkham, J
    Robinson, C
    Marsh, A
    Wong, M
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (37): : 8862 - 8870
  • [9] Electrode potential effect on the surface pKa of a self-assembled 15-mercaptohexadecanoic acid monolayer on a gold/quartz crystal microbalance electrode
    Sugihara, K
    Shimazu, K
    Uosaki, K
    [J]. LANGMUIR, 2000, 16 (18) : 7101 - 7105
  • [10] Formation and structure of self-assembled monolayers
    Ulman, A
    [J]. CHEMICAL REVIEWS, 1996, 96 (04) : 1533 - 1554
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