[1]王怡红,葛存旺,徐丽娜,等.N-烷基-2-巯基乙酰胺自组装膜阻隔溶液离子跨膜输运能力[J].东南大学学报(自然科学版),2003,33(3):296-299.[doi:10.3969/j.issn.1001-0505.2003.03.012]
 Wang Yihong,Ge Cunwang,Xu Lina,et al.Protective characteristics of self-assembly monolayers of N-alkyl-2-mercapto-acetamide in obstructing ions in solutions from transferring through the film[J].Journal of Southeast University (Natural Science Edition),2003,33(3):296-299.[doi:10.3969/j.issn.1001-0505.2003.03.012]
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N-烷基-2-巯基乙酰胺自组装膜阻隔溶液离子跨膜输运能力()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
33
期数:
2003年第3期
页码:
296-299
栏目:
化学化工
出版日期:
2003-05-20

文章信息/Info

Title:
Protective characteristics of self-assembly monolayers of N-alkyl-2-mercapto-acetamide in obstructing ions in solutions from transferring through the film
作者:
王怡红12 葛存旺1 徐丽娜1 顾宁1 刘举正2
1 东南大学分子与生物分子电子学教育部重点实验室,南京 210096; 2 东南大学化学化工系,南京 210096
Author(s):
Wang Yihong12 Ge Cunwang1 Xu Lina1 Gu Ning1 Liu Juzheng2
1 Key Laboratory of Molecular and Bio-molecular Electronics of Ministry of Education, Nanjing 210096, China
2 Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China
关键词:
N-烷基-2-巯基乙酰胺 自组装膜 防护性
Keywords:
N-alkyl-2-mercapto-acetamide self-assembly monolayers protective characteristics
分类号:
O647.32
DOI:
10.3969/j.issn.1001-0505.2003.03.012
摘要:
采用自组装手段,将3种不同链长的N-烷基-2-巯基乙酰胺分子(HSCH2CONH(CH2)nCH3, n=6,11,17)组装于多晶金(Au)表面,形成自组装单分子膜(SAMs).接触角测量值表明,SAMs具有与长链硫醇形成的自组装单分子膜相近的润湿性和致密性.循环伏安和阻抗测量表明,SAMs的缺陷随分子链长的增加而降低,界面电荷传输阻力亦随分子链长的增加而增加,界面氧化还原反应随着链长的增加逐渐转化为完全的动力学控制过程.SAMs有效阻隔了溶液离子、电子等的跨膜输运.
Abstract:
Three different chain length ω-substituted alkanethiols with organic structures containing acetamide groups: HSCH2CONH(CH2)6CH3, HSCH2CONH(CH2)11CH3 and HSCH2CONH(CH2)17CH3 are assembled on polycrystalline gold to form self-assembly monolayers(SAMs)by the molecular self-assembly(SA). Contact angle measurement(CAM)suggests that the SAMs are highly uniform. Cyclic voltammetry(CV)and A.C. impedance(IMP)measurements indicate that SAMs with longer chain length have larger coverage area and can protect solution ion from transferring across the thin film.

参考文献/References:

[1] Sagiv J.Organized monolayers by adsorption 1.formation and structure of oleophobic mixed monolayers on solid surface[J]. J Am Chem Soc,1980,102:92-98.
[2] Nuzzo R G,Allara D L.Adsorption of bifunctional organic disufides on gold surfaces [J].J Am Chem Soc,1983,105:4481-4483.
[3] Piorier G E,Tarlov M J.The(4×2)superlattice of n-alkanethiol monolayers self-assembled on Au(111)[J]. Langmuir 1994, 10:2853-2859.
[4] Arce F T,Arvie A J.Complex structural dynamics at adsorbed alkanethiol layers at Au(111)single-crystal domain[J].Langmuir,1998,14:7203-7212.
[5] Mara D P,Thomas B B,David L A,et al.Spontaneously organized molecular assemblies 4.structural characterization of N-alkylthiol monolayers on gold by optical ellipsometry,infrared spectroscopy and electrochemistry [J].J Am Chem Soc,1987,109:3559-3568.
[6] Lopez G P,Albers M W,Schreiber S L,et al.Convenient methods for patterning the adhesion of mammalian cells to surfaces using self-assembled monolayers of alkanethiolates on gold [J].J Am Chem Soc,1993,115:5877-5885.
[7] Zamborini F P,Crooks R M.Corrosion passivation of gold by N-alkanethiol self-assembled monolayers:effect of chain length and end group[J].Langmuir,1998,14:3279-3286.
[8] Amatore C,Saveant J M,Tessier D.Charge transfer at partially blocked surfaces A:model for the case of microscopic active and inactive sites[J].J Electroanal Chem,1983,147:39-51.
[9] Mcdermott C A,Mcdermott M T,Greem J B,et al.Structure origins of the surface depressions at alkanothiolate monolayers on Au(111):a scanning tunneling and atomic force microscopic investigation [J].J Phys Chem,1995,99:13257-13267.
[10] Hutt D A,Cooper E,Leggett G J.Structure and mechanism of photooxidation of self-assembled monolayer of alkylthiols of silver studied by XPS and static SIMs [J].J Phys Chem B,1998,102:172-184.
[11] Cooper E,Graham J L.Static secondary ion mass spectrometry studies of self-assembled monolayers:influence of adsorbate chain length and terminal functional group on rate of photooxidation of alkanethiols on gold[J].Langmuir,1998,14:4795-4801.
[12] Zamborini F P,Crooks R M.In-situ electrochemical scanning tunneling microscopy(ECSTM)study of cyanide-induced corrosion of naked and hexadecyl mercaptan-passivated Au(111)[J].Langmuir,1997,13:122-126.
[13] Suk-wah,Tam-chang.Self-assembled monolayers on gold generated from alkanethiols with the structure RNHCOCH2SH [J].Langmuir,1995,11:4371-4382.

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(60171005)、东南大学校科研基金资助项目(9207041104).
作者简介: 王怡红(1962—),女,博士生,副教授; 顾宁(联系人),男,博士,教授,博士生导师,guning@seu.edu.cn.
更新日期/Last Update: 2003-05-20