Viscous "interphase" water adjacent to oligo(ethylene glycol)-terminated monolayers

被引：75

作者：

Kim, HI ^{[1
]}

Kushmerick, JG ^{[1
]}

Houston, JE ^{[1
]}

Bunker, BC ^{[1
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

LANGMUIR | 2003年 / 19卷 / 22期

关键词：

D O I：

10.1021/la034585x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report measurements of the interaction force between functionalized probe tips and oligo(ethylene glycol) (OEG)-terminated monolayers. Force profiles obtained with the interfacial force microscope indicate the presence of an interphase water layer adjacent to the OEG-terminated monolayer that generates a repulsive hydration force. This interphase layer extends up to 5 nm from the surface and has a viscosity that is 6 orders of magnitude greater than that of bulk water. The possible role this interphase layer plays in the exceptional protein resistance of such systems is discussed.

引用

收藏

页码：9271 / 9275

页数：5

相关论文

共 31 条

[1] Measurement of interfacial shear (friction) with an ultrahigh vacuum atomic force microscope [J].

Carpick, RW ;

Agrait, N ;

Ogletree, DF ;

Salmeron, M .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1996, 14 (02) :1289-1295

[2] THE DRAINAGE OF THIN LIQUID-FILMS BETWEEN SOLID-SURFACES [J].

CHAN, DYC ;

HORN, RG .

JOURNAL OF CHEMICAL PHYSICS, 1985, 83 (10) :5311-5324

[3] CAVITATION AND THE INTERACTION BETWEEN MACROSCOPIC HYDROPHOBIC SURFACES [J].

CHRISTENSON, HK ;

CLAESSON, PM .

SCIENCE, 1988, 239 (4838) :390-392

[4] A SCANNING-TUNNELING-MICROSCOPY STUDY OF ELECTROCHEMICALLY GROWN CADMIUM-SULFIDE MONOLAYERS ON AU(111) [J].

DEMIR, U ;

SHANNON, C .

LANGMUIR, 1994, 10 (08) :2794-2799

[5] Relaxation time of confined aqueous films under shear [J].

Dhinojwala, A ;

Granick, S .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (01) :241-242

[6] pH-dependent force spectroscopy of tri(ethylene glycol)and methyl-terminated self-assembled monolayers adsorbed on gold [J].

Dicke, C ;

Hähner, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (42) :12619-12625

[7] Interaction between a hydrophobic probe and tri(ethylene glycol)-containing self-assembled monolayers on gold studied with force spectroscopy in aqueous electrolyte solution [J].

Dicke, C ;

Hähner, G .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (17) :4450-4456

[8] Probing resistance to protein adsorption of oligo(ethylene glycol)-terminated self-assembled monolayers by scanning force microscopy [J].

Feldman, K ;

Hähner, G ;

Spencer, ND ;

Harder, P ;

Grunze, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (43) :10134-10141

[9]

HAHNER G, COMMUNICATION

[10] Molecular conformation in oligo(ethylene glycol)-terminated self-assembled monolayers on gold and silver surfaces determines their ability to resist protein adsorption [J].

Harder, P ;

Grunze, M ;

Dahint, R ;

Whitesides, GM ;

Laibinis, PE .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (02) :426-436

← 1 2 3 4 →