Reactivity of Au25 clusters with Au3+

被引：48

作者：

Muhammed, M. A. Habeeb ^{[1
]}

Pradeep, T. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem & Sophisticated Analyt Instruments Faci, DST Unit Nanosci, Madras 600036, Tamil Nadu, India

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 449卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2007.10.065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the instantaneous decomposition of the small molecular gold cluster, Au(25)SG(18) (SG-glutathione thiolate) in the presence of externally added chloroaurate ions resulting in the instantaneous formation of the insoluble gold-glutathione polymer. The rate of decomposition, however, was much slower for the metal ions such as Ag+, Fe3+, Cu2+, Ni2+, Cd2+, Zn2+ and Sr2+. This chemical reactivity is shown to have no direct correlation with the electrochemical potential of the added ions. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：186 / 190

页数：5

共 16 条

[1] Arenethiolate monolayer-protected gold clusters [J].

Chen, SW ;

Murray, RW .

LANGMUIR, 1999, 15 (03) :682-689

[2] Preparation of thiol-capped gold nanoparticles by chemical reduction of soluble Au(I)-thiolates [J].

Corbierre, MK ;

Lennox, RB .

CHEMISTRY OF MATERIALS, 2005, 17 (23) :5691-5696

[3] Gas phase aggregates of protected clusters [J].

Cyriac, J ;

Kumar, VRR ;

Pradeep, T .

CHEMICAL PHYSICS LETTERS, 2004, 390 (1-3) :181-185

[4] Understanding the oxidative stability of gold monolayer-protected clusters in the presence of halide ions under ambient conditions [J].

Dasog, Mita ;

Scott, Robert W. J. .

LANGMUIR, 2007, 23 (06) :3381-3387

[5] Chemical, thermal, and ultrasonic stability of hybrid nanoparticles and nanoparticle multilayer films [J].

Isaacs, SR ;

Choo, H ;

Ko, WB ;

Shon, YS .

CHEMISTRY OF MATERIALS, 2006, 18 (01) :107-114

[6] Effect of catalysis on the stability of metallic nanoparticles: Suzuki reaction catalyzed by PVP-palladium nanoparticles [J].

Narayanan, R ;

El-Sayed, MA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (27) :8340-8347

[7] Glutathione-protected gold clusters revisited: Bridging the gap between gold(I)-thiolate complexes and thiolate-protected gold nanocrystals [J].

Negishi, Y ;

Nobusada, K ;

Tsukuda, T .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (14) :5261-5270

[8] Magic-numbered Aun clusters protected by glutathione monolayers (n=18, 21, 25, 28, 32, 39):: Isolation and spectroscopic characterization [J].

Negishi, Y ;

Takasugi, Y ;

Sato, S ;

Yao, H ;

Kimura, K ;

Tsukuda, T .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (21) :6518-6519

[9]

NEGISHI Y, 2007, J AM CHEM SOC, V129

[10] Spatially-directed oxidation of gold nanoparticles by Au(III)-CTAB complexes [J].

Rodríguez-Fernández, J ;

Pérez-Juste, J ;

Mulvaney, P ;

Liz-Marzán, LM .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (30) :14257-14261

← 1 2 →