Light-Controlled One-Sided Growth of Large Plasmonic Gold Domains on Quantum Rods Observed on the Single Particle Level

被引：95

作者：

Carbone, Luigi ^{[1
]}

Jakab, Arpad ^{[1
]}

Khalavka, Yuriy ^{[1
]}

Soennichsen, Carsten ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, D-55128 Mainz, Germany

来源：

NANO LETTERS | 2009年 / 9卷 / 11期

关键词：

SEMICONDUCTOR NANOCRYSTALS; NANORODS; NANOPARTICLES; NANOSTRUCTURES; ELECTRON; TIO2; TIPS; CDS; HETEROSTRUCTURES; NANOCOMPOSITES;

D O I：

10.1021/nl9017918

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We create large gold domains (up to 15 nm) exclusively on one side of US or CdSe/CdS quantum rods by photoreduction of gold ions under anaerobic conditions. Electrons generated in the semiconductor by UV stimulation migrate to one tip where they reduce gold ions. Large gold domains eventually form; these support efficient plasmon oscillations with a light scattering cross section large enough to visualize single hybrid particles in a dark-field microscope during growth in real time.

引用

页码：3710 / 3714

页数：5

共 42 条

[1] Perspectives on the physical chemistry of semiconductor nanocrystals [J].

Alivisatos, AP .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (31) :13226-13239

[2] Seeded growth of asymmetric binary nanocrystals made of a semiconductor TiO2 rodlike section and a magnetic γ-Fe2O3 spherical domain [J].

Buonsanti, Raffaella ;

Grillo, Vincenzo ;

Carlino, Elvio ;

Giannini, Cinzia ;

Curri, Maria Lucia ;

Innocenti, Claudia ;

Sangregorio, Claudio ;

Achterhold, Klaus ;

Parak, Fritz Guenter ;

Agostiano, Angela ;

Cozzoli, Pantaleo Davide .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (51) :16953-16970

[3] Photocatalytic transformations of chlorinated methanes in the presence of electron and hole scavengers [J].

Calza, P ;

Minero, C ;

Pelizzetti, E .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (21) :3765-3771

[4] Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach [J].

Carbone, Luigi ;

Nobile, Concetta ;

De Giorgi, Milena ;

Sala, Fabio Delia ;

Morello, Giovanni ;

Pompa, Pierpaolo ;

Hytch, Martin ;

Snoeck, Etienne ;

Fiore, Angela ;

Franchini, Isabella R. ;

Nadasan, Monica ;

Silvestre, Albert F. ;

Chiodo, Letizia ;

Kudera, Stefan ;

Cingolani, Roberto ;

Krahne, Roman ;

Manna, Liberato .

NANO LETTERS, 2007, 7 (10) :2942-2950

[5] Selective reactions on the tips of colloidal semiconductor nanorods [J].

Carbone, Luigi ;

Kudera, Stefan ;

Giannini, Cinzia ;

Ciccarella, Giuseppe ;

Cingolani, Roberto ;

Cozzoli, Pantaleo Davide ;

Manna, Liberato .

JOURNAL OF MATERIALS CHEMISTRY, 2006, 16 (40) :3952-3956

[6] Topologically controlled growth of magnetic-metal-functionalized semiconductor oxide nanorods [J].

Casavola, Marianna ;

Grillo, Vincenzo ;

Carlino, Elvio ;

Giannini, Cinzia ;

Gozzo, Fabia ;

Fernandez Pinel, Enrique ;

Angel Garcia, Miguel ;

Manna, Liberato ;

Cingolani, Roberto ;

Davide Cozzoli, Pantaleo .

NANO LETTERS, 2007, 7 (05) :1386-1395

[7] Novel photocatalytic mechanisms for CHCl3, CHBr3, and CCl3CO2- degradation and the fate of photogenerated trihalomethyl radicals on TiO2 [J].

Choi, WY ;

Hoffmann, MR .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (01) :89-95

[8] Visible light-induced charge retention and photocatalysis with hybrid CdSe-Au nanodumbbells [J].

Costi, Ronny ;

Saunders, Aaron E. ;

Elmalem, Einat ;

Salant, Asaf ;

Banin, Uri .

NANO LETTERS, 2008, 8 (02) :637-641

[9] Efficient charge storage in photoexcited TiO2 nanorod-noble metal nanoparticle composite systems [J].

Cozzoli, PD ;

Curri, ML ;

Agostiano, A .

CHEMICAL COMMUNICATIONS, 2005, (25) :3186-3188

[10] Photocatalytic synthesis of silver nanoparticles stabilized by TiO2 nanorods:: A semiconductor/metal nanocomposite in homogeneous nonpolar solution [J].

Cozzoli, PD ;

Comparelli, R ;

Fanizza, E ;

Curri, ML ;

Agostiano, A ;

Laub, D .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (12) :3868-3879

← 1 2 3 4 5 →