Silica encapsulation of hydrophobically ligated PbSe nanocrystals

被引：49

作者：

Darbandi, M

Lu, WG

Fang, JY

Nann, T

机构：

[1] Univ Freiburg, Freiburg Mat Res Ctr, D-79104 Freiburg, Germany

[2] Univ New Orleans, Dept Chem, New Orleans, LA 70148 USA

[3] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA

来源：

LANGMUIR | 2006年 / 22卷 / 09期

关键词：

D O I：

10.1021/la0529658

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Spherical PbSe@SiO2 nanoparticles have been successfully synthesized within reverse micelles via metal alkoxide hydrolysis and condensation within a microemulsion system. These core-shell nanoparticles were characterized by transmission electron microscopy (TEM), NIR absorption spectroscopy, energy-dispersive X-ray analysis, and TEM electron diffractions. It shows that the obtained core-shell structures have a spherical shape with narrow size distribution (average size approximately 35 nm) and smooth surfaces. The size of the particles and the thickness of the shells can be controlled by manipulating the relative rates of the hydrolysis and condensation reactions of tetraethoxysilane (TEOS) within the microemulsion.

引用

页码：4371 / 4375

页数：5

共 44 条

[31] Visualizing the self-assembly of tubulin with luminescent nanorods
Riegler, J
Nick, P
Kielmann, U
Nann, T
[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2003, 3 (05) : 380 - 385
[32] II-VI semiconductor nanocrystals in thin films and colloidal crystals
Rogach, AL
Kotov, NA
Koktysh, DS
Susha, AS
Caruso, F
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2002, 202 (2-3) : 135 - 144
[33] Synthesis and characterization of silica-coated iron oxide nanoparticles in microemulsion: The effect of nonionic surfactants
Santra, S
Tapec, R
Theodoropoulou, N
Dobson, J
Hebard, A
Tan, WH
[J]. LANGMUIR, 2001, 17 (10) : 2900 - 2906
[34] Synthesis and characterization of PbSe and PbSe/PbS core-shell colloidal nanocrystals
Sashchiuk, A
Langof, L
Chaim, R
Lifshitz, E
[J]. JOURNAL OF CRYSTAL GROWTH, 2002, 240 (3-4) : 431 - 438
[35] Gold nanorods as novel nonbleaching plasmon-based orientation sensors for polarized single-particle microscopy
Sönnichsen, C
Alivisatos, AP
[J]. NANO LETTERS, 2005, 5 (02) : 301 - 304
[36] Formation of TiO2 nanoparticles in reverse micelles and their deposition as thin films on glass substrates
Stathatos, E
Lianos, P
DelMonte, F
Levy, D
Tsiourvas, D
[J]. LANGMUIR, 1997, 13 (16) : 4295 - 4300
[37] CONTROLLED GROWTH OF MONODISPERSE SILICA SPHERES IN MICRON SIZE RANGE
STOBER, W
FINK, A
BOHN, E
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1968, 26 (01) : 62 - &
[38] PbSe nanocrystal solids for n- and p-channel thin film field-effect transistors
Talapin, DV
Murray, CB
[J]. SCIENCE, 2005, 310 (5745) : 86 - 89
[39] Micro-emulsion synthesis of monodisperse surface stabilized silicon nanocrystals
Tilley, RD
Warner, JH
Yamamoto, K
Matsui, I
Fujimori, H
[J]. CHEMICAL COMMUNICATIONS, 2005, (14) : 1833 - 1835
[40] WILLIAM WY, 2004, CHEM MATER, V16, P3318

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