Force titration of amino group-terminated self-assembled monolayers using chemical force microscopy

被引：87

作者：

Zhang, H ^{[1
]}

He, HX ^{[1
]}

Wang, J ^{[1
]}

Mu, T ^{[1
]}

Liu, ZF ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Ctr Intelligent Mat Res, Beijing 100871, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1998年 / 66卷 / Suppl 1期

关键词：

D O I：

10.1007/s003390051143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chemical force microscopy (CFM) was used to measure the adhesion force between an Au-coated Si3N4 tip functionalized with OH groups and a silicon substrate functionalized with NH2 groups. The curve of the adhesion force as a function of the solution pH value (force titration curve) was obtained. The PK1/2 of surface NH2 groups estimated from the force titration curve is 7.4, about 3 pK units lower than the pK value of NH2 functionality in aqueous solution, and in nice agreement with the value of PK1/2 = 7.6 determined by conventional contact angle titration. The surface PK1/2 value that we obtained from the force titration or contact angle titration is the apparent surface pK value, which is expressed as the corresponding bulk solution pH value at which the functional groups at the interface are half-ionized.

引用

页码：S269 / S271

页数：3

共 16 条

[1] CHEMICAL IMAGING BY SCANNING FORCE MICROSCOPY [J].

AKARI, S ;

HORN, D ;

KELLER, H ;

SCHREPP, W .

ADVANCED MATERIALS, 1995, 7 (06) :549-551

[2] ATOMIC FORCE MICROSCOPE [J].

BINNIG, G ;

QUATE, CF ;

GERBER, C .

PHYSICAL REVIEW LETTERS, 1986, 56 (09) :930-933

[3] CONTACT-ANGLE TITRATIONS OF MIXED OMEGA-MERCAPTOALKANOIC ACID ALKANETHIOL MONOLAYERS ON GOLD - REACTIVE VS NONREACTIVE SPREADING, AND CHAIN-LENGTH EFFECTS ON SURFACE PK(A) VALUES [J].

CREAGER, SE ;

CLARKE, J .

LANGMUIR, 1994, 10 (10) :3675-3683

[4] SCANNING FORCE MICROSCOPY STUDIES OF ENHANCED METAL NUCLEATION - AU VAPOR-DEPOSITED ON SELF-ASSEMBLED MONOLAYERS OF SUBSTITUTED SILANES [J].

DUNAWAY, DJ ;

MCCARLEY, RL .

LANGMUIR, 1994, 10 (10) :3598-3606

[5] FUNCTIONAL-GROUP IMAGING BY CHEMICAL FORCE MICROSCOPY [J].

FRISBIE, CD ;

ROZSNYAI, LF ;

NOY, A ;

WRIGHTON, MS ;

LIEBER, CM .

SCIENCE, 1994, 265 (5181) :2071-2074

[6] NANOMETER-SCALE MAPPING OF CHEMICALLY DISTINCT DOMAINS AT WELL-DEFINED ORGANIC INTERFACES USING FRICTIONAL FORCE MICROSCOPY [J].

GREEN, JBD ;

MCDERMOTT, MT ;

PORTER, MD ;

SIPERKO, LM .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (27) :10960-10965

[7] COVALENTLY ATTACHED ORGANIC MONOLAYERS ON SEMICONDUCTOR SURFACES [J].

HALLER, I .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1978, 100 (26) :8050-8055

[8] Force Titration Self-Assembled Monolayer Using Chemical Force Microscopy [J].

He Huixin ;

Li Chunzeng ;

Wang Junmei ;

Zhang Haoli ;

Xu Xiaojie ;

Lin Zhongfan .

ACTA PHYSICO-CHIMICA SINICA, 1997, 13 (04) :293-296

[9] Force titration of a carboxylic acid terminated self-assembled monolayer using chemical force microscopy [J].

He, HX ;

Li, CZ ;

Song, JQ ;

Mu, T ;

Wang, L ;

Zhang, HL ;

Liu, ZF .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1997, 294 :99-102

[10] ACID-BASE BEHAVIOR OF CARBOXYLIC-ACID GROUPS COVALENTLY ATTACHED AT THE SURFACE OF POLYETHYLENE - THE USEFULNESS OF CONTACT-ANGLE IN FOLLOWING THE IONIZATION OF SURFACE FUNCTIONALITY [J].

HOLMESFARLEY, SR ;

REAMEY, RH ;

MCCARTHY, TJ ;

DEUTCH, J ;

WHITESIDES, GM .

LANGMUIR, 1985, 1 (06) :725-740

← 1 2 →