Au25@SiO2: Quantum Clusters of Gold Embedded in Silica

被引：57

作者：

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

Pradeep, T. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India

来源：

SMALL | 2011年 / 7卷 / 02期

关键词：

LARGE-SCALE SYNTHESIS; AU-25; CLUSTERS; CRYSTAL-STRUCTURE; LIGAND-EXCHANGE; MONOLAYERS; NANOPARTICLES; LUMINESCENCE; AU-38; GAP;

D O I：

10.1002/smll.201001332

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The formation of Au25@SiO2 is reported in which the quantum clusters (QCs) are embedded in a layer of silica. Polydisperse Au mSGn QCs are converted rapidly into monodisperse Au 25 QCs by the addition of (3-mercaptopropyl)trimethoxysilane (MPTS) with 7-times-higher yield when compared to the glutathione-mediated synthesis. Subsequent hydro-lysis and condensation results in the formation of Au 25@SiO2. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：204 / 208

页数：5

共 37 条

[1]

Archana R., 2010, NANOTECHNOLOGY, V21

[2] Quantum mechanical single-gold-nanocluster electroluminescent light source at room temperature [J].

Gonzalez, JI ;

Lee, TH ;

Barnes, MD ;

Antoku, Y ;

Dickson, RM .

PHYSICAL REVIEW LETTERS, 2004, 93 (14) :147402-1

[3] Single-step coating of mesoporous silica on cetyltrimethyl ammonium bromide-capped nanoparticles [J].

Gorelikov, Ivan ;

Matsuura, Naomi .

NANO LETTERS, 2008, 8 (01) :369-373

[4] Recent Progress on Silica Coating of Nanoparticles and Related Nanomaterials [J].

Guerrero-Martinez, Andres ;

Perez-Juste, Jorge ;

Liz-Marzan, Luis M. .

ADVANCED MATERIALS, 2010, 22 (11) :1182-1195

[5] Crystal structure of the gold nanoparticle [N(C8H17)4][Au25(SCH2CH2Ph)18] [J].

Heaven, Michael W. ;

Dass, Amala ;

White, Peter S. ;

Holt, Kennedy M. ;

Murray, Royce W. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (12) :3754-+

[6] Shell-isolated nanoparticle-enhanced Raman spectroscopy [J].

Li, Jian Feng ;

Huang, Yi Fan ;

Ding, Yong ;

Yang, Zhi Lin ;

Li, Song Bo ;

Zhou, Xiao Shun ;

Fan, Feng Ru ;

Zhang, Wei ;

Zhou, Zhi You ;

Wu, De Yin ;

Ren, Bin ;

Wang, Zhong Lin ;

Tian, Zhong Qun .

NATURE, 2010, 464 (7287) :392-395

[7] Visible to infrared luminescence from a 28-atom gold cluster [J].

Link, S ;

Beeby, A ;

FitzGerald, S ;

El-Sayed, MA ;

Schaaff, TG ;

Whetten, RL .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (13) :3410-3415

[8] Quantum clusters of gold exhibiting FRET [J].

Muhammed, M. A. Habeeb ;

Shaw, Ajay Kumar ;

Pal, Samir Kumar ;

Pradeep, T. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (37) :14324-14330

[9] Reactivity of Au25 clusters with Au3+ [J].

Muhammed, M. A. Habeeb ;

Pradeep, T. .

CHEMICAL PHYSICS LETTERS, 2007, 449 (1-3) :186-190

[10] Bright, NIR-Emitting Au23 from Au25: Characterization and Applications Including Biolabeling [J].

Muhammed, Madathumpady Abubaker Habeeb ;

Verma, Pramod Kumar ;

Pal, Samir Kumar ;

Kumar, R. C. Arun ;

Paul, Soumya ;

Omkumar, Ramakrishnapillai Vyomakesannair ;

Pradeep, Thalappil .

CHEMISTRY-A EUROPEAN JOURNAL, 2009, 15 (39) :10110-10120

← 1 2 3 4 →