Purification of molecularly bridged metal nanoparticle arrays by centrifugation and size exclusion chromatography

被引：111

作者：

Novak, JP ^{[1
]}

Nickerson, C ^{[1
]}

Franzen, S ^{[1
]}

Feldheim, DL ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA

来源：

ANALYTICAL CHEMISTRY | 2001年 / 73卷 / 23期

关键词：

D O I：

10.1021/ac010812t

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Size exclusion chromatography and centrifugation separation protocols were developed and compared for isolating enriched fractions of phenylethynyl-bridged metal nanoparticle dimers and trimers from the monomeric particle starting material. Both methods enabled the isolation of enriched fractions of a desired array without causing significant sample aggregation or replacement of the phenylethynyl bridge. Solutions containing ca. 70% bridged gold dimers were obtained using either method. The further development of methods for separating discrete arrays of covalently bridged nanoparticle homo and hetero structures is expected to help advance our understanding of collective metal particle electronic structure-function relationships.

引用

页码：5758 / 5761

页数：4

共 17 条

[1]

[Anonymous], 1992, Preparative centrifugation

[2]

BRADLEY JS, 1994, CLUSTERS COLLOIDS TH, P487

[3]

Brousseau LC, 1999, ADV MATER, V11, P447, DOI 10.1002/(SICI)1521-4095(199904)11:6<447::AID-ADMA447>3.0.CO

[4]

2-I

[5]

Feldheim DL, 1998, CHEM SOC REV, V27, P1

[6]

FELDHEIM DL, 2001, INTERFACE FAL

[7]

Loweth CJ, 1999, ANGEW CHEM INT EDIT, V38, P1808, DOI 10.1002/(SICI)1521-3773(19990614)38:12<1808::AID-ANIE1808>3.0.CO

[8]

2-C

[9] Electronic and optical properties of chemically modified metal nanoparticles and molecularly bridged nanoparticle arrays [J].

McConnell, WP ;

Novak, JP ;

Brousseau, LC ;

Fuierer, RR ;

Tenent, RC ;

Feldheim, DL .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (38) :8925-8930

[10]

NOVAK JM, UNPUB

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