Reduced reactivity of aged Au nanoparticles in ligand exchange reactions

被引：39

作者：

Chechik, V ^{[1
]}

机构：

[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 25期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/ja048879w

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solutions of alkanethiol-protected Au nanoparticles undergo a slow aging process over a period of several days, which dramatically reduces their reactivity in a place-exchange reaction with disulfides. This behavior was tentatively attributed to the reorganization of the most reactive binding sites (e.g., defect sites) on the nanoparticle surface. Copyright © 2004 American Chemical Society.

引用

收藏

页码：7780 / 7781

页数：2

相关论文

共 9 条

[1] SYNTHESIS OF THIOL-DERIVATIZED GOLD NANOPARTICLES IN A 2-PHASE LIQUID-LIQUID SYSTEM [J].

BRUST, M ;

WALKER, M ;

BETHELL, D ;

SCHIFFRIN, DJ ;

WHYMAN, R .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (07) :801-802

[2] Spin-labelled Au nanoparticles [J].

Chechik, V ;

Wellsted, HJ ;

Korte, A ;

Gilbert, BC ;

Caldararu, H ;

Ionita, P ;

Caragheorgheopol, A .

FARADAY DISCUSSIONS, 2004, 125 :279-291

[3] Monolayer-protected cluster growth dynamics [J].

Chen, SW ;

Templeton, AC ;

Murray, RW .

LANGMUIR, 2000, 16 (07) :3543-3548

[4] Dynamics of place-exchange reactions on monolayer-protected gold cluster molecules [J].

Hostetler, MJ ;

Templeton, AC ;

Murray, RW .

LANGMUIR, 1999, 15 (11) :3782-3789

[5] EPR study of a place-exchange reaction on Au nanoparticles: Two branches of a disulfide molecule do not adsorb adjacent to each other [J].

Ionita, P ;

Caragheorgheopol, A ;

Gilbert, BC ;

Chechik, V .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (31) :9048-9049

[6] Shape and size dependence of radiative, non-radiative and photothermal properties of gold nanocrystals [J].

Link, S ;

El-Sayed, MA .

INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY, 2000, 19 (03) :409-453

[7] Heterophase ligand exchange and metal transfer between monolayer protected clusters [J].

Song, Y ;

Huang, T ;

Murray, RW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (38) :11694-11701

[8] Monolayers in three dimensions: NMR, SAXS, thermal, and electron hopping studies of alkanethiol stabilized gold clusters [J].

Terrill, RH ;

Postlethwaite, TA ;

Chen, CH ;

Poon, CD ;

Terzis, A ;

Chen, AD ;

Hutchison, JE ;

Clark, MR ;

Wignall, G ;

Londono, JD ;

Superfine, R ;

Falvo, M ;

Johnson, CS ;

Samulski, ET ;

Murray, RW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (50) :12537-12548

[9] Etching and aging effects in nanosize Au clusters investigated using high-resolution size-exclusion chromatography [J].

Wilcoxon, JP ;

Provencio, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (47) :12949-12957