Gold Nanoparticles Immobilized on Stimuli Responsive Polymer Brushes as Nanosensors

被引：111

作者：

Gupta, Smrati ^{[1
]}

Agrawal, Mukesh ^{[1
]}

Uhlmann, Petra ^{[1
]}

Simon, Frank ^{[1
]}

Oertel, Ulrich ^{[1
]}

Stamm, Manfred ^{[1
]}

机构：

[1] Leibniz Inst Polymerforsch Dresden eV, D-01069 Dresden, Germany

来源：

MACROMOLECULES | 2008年 / 41卷 / 21期

关键词：

D O I：

10.1021/ma801557u

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report on the immobilization of gold nanoparticles on end-functionalized and solvent responsive polystyrene brushes, grafted on an underlying substrate. The presence of gold nanoparticles on polystyrene brushes was confirmed by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The resulting polystyrene-Au nanoassemblies have been used as the nanosensors for the detection of a variety of organic solvents in surrounding media. The sensing mechanism is based upon the change in the proximity of the immobilized gold nanoparticles as a consequence of the solvent induced reversible swelling-deswelling of polystyrene chains. The sensing ability was demonstrated by a simple analytic tool, i.e., UV-vis spectroscopy, through a shift in plasmon resonance band of immobilized Au nanoparticles. A dramatic blue shift of 32 nm in the surface resonance band was observed as the surrounding media of Au immobilized polystyrene brushes (Au-PS) was changed from air to the toluene. The described approach is facile and versatile in nature, which can be used for the fabrication of a variety of nanosensors based on the polymer brushes-nanoparticle assemblies.

引用

页码：8152 / 8158

页数：7

共 70 条

[51] Self-assembly of submicrometer rings of particles from solutions of nanoparticles [J].

Ohara, PC ;

Heath, JR ;

Gelbart, WM .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1997, 36 (10) :1078-+

[52]

Perkins FK, 1996, APPL PHYS LETT, V68, P550, DOI 10.1063/1.116396

[53] Linking and manipulation of gold multinanoparticle structures using dithiols and scanning force microscopy [J].

Resch, R ;

Baur, C ;

Bugacov, A ;

Koel, BE ;

Echternach, PM ;

Madhukar, A ;

Montoya, N ;

Requicha, AAG ;

Will, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (18) :3647-3650

[54] Single electron transistor using a molecularly linked gold colloidal particle chain [J].

Sato, T ;

Ahmed, H ;

Brown, D ;

Johnson, BFG .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (02) :696-701

[55] FORMATION AND STRUCTURE OF A SPONTANEOUSLY ADSORBED MONOLAYER OF ARACHIDIC ON SILVER [J].

SCHLOTTER, NE ;

PORTER, MD ;

BRIGHT, TB ;

ALLARA, DL .

CHEMICAL PHYSICS LETTERS, 1986, 132 (01) :93-98

[56]

Schmid G., 1994, CLUSTERS COLLOIDS TH

[57]

Seah M. P., 1979, Surface and Interface Analysis, V1, P2, DOI 10.1002/sia.740010103

[58] The model of linear aggregate of Ag colloidal particles with variable inter-particle distances [J].

Sestak, O ;

Matejka, P ;

Vlckova, B .

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS, 1996, 61 (01) :59-69

[59] AFM-based fabrication of free-standing Si nanostructures [J].

Snow, ES ;

Campbell, PM ;

McMarr, PJ .

NANOTECHNOLOGY, 1996, 7 (04) :434-437

[60] One-pot colorimetric differentiation of polynucleotides with single base imperfections using gold nanoparticle probes [J].

Storhoff, JJ ;

Elghanian, R ;

Mucic, RC ;

Mirkin, CA ;

Letsinger, RL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (09) :1959-1964

← 1 2 3 4 5 6 7 →