Ultrabright PbSe magic-sized clusters

被引：137

作者：

Evans, Christopher M. ^{[1
]}

Guo, Li ^{[1
]}

Peterson, Jeffrey J. ^{[1
]}

Maccagnano-Zacher, Sara ^{[2
]}

Krauss, Todd D. ^{[1
]}

机构：

[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA

[2] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA

来源：

NANO LETTERS | 2008年 / 8卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1021/nl801685a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present the synthesis and characterization of novel, ultrasmall PbSe magic-sized nanoclusters (MSCs). Unlike the syntheses of high-quality semiconductor nanoparticles, the MSC synthesis is straightforward, occurring at room temperature in air over several hours. MSCs have core diameters <2 nm and fluoresce in the near-infrared (900 nm) with remarkable quantum efficiencies consistently greater than 50%. The relatively slow growth of MSCs allows for a significant scale up of reaction volumes. Transfer to aqueous solvents has also been demonstrated, establishing MSCs as a potential new fluorophore for applications in biological imaging.

引用

页码：2896 / 2899

页数：4

共 29 条

[11] Size-dependence of stability and optical properties of lead sulfide clusters
He, Jiangang
Liu, Caiping
Li, Fujun
Sa, Rongjian
Wu, Kechen
[J]. CHEMICAL PHYSICS LETTERS, 2008, 457 (1-3) : 163 - 168
[12] NIR-emitting colloidal quantum dots having 26% luminescence quantum yield in buffer solution
Hinds, Sean
Myrskog, Stefan
Levina, Larissa
Koleilat, Ghada
Yang, Jun
Kelley, Shana O.
Sargent, Edward H.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (23) : 7218 - +
[13] Ultra-stable nanoparticles of CdSe revealed from mass spectrometry
Kasuya, A
Sivamohan, R
Barnakov, YA
Dmitruk, IM
Nirasawa, T
Romanyuk, VR
Kumar, V
Mamykin, SV
Tohji, K
Jeyadevan, B
Shinoda, K
Kudo, T
Terasaki, O
Liu, Z
Belosludov, RV
Sundararajan, V
Kawazoe, Y
[J]. NATURE MATERIALS, 2004, 3 (02) : 99 - 102
[14] Engineering InAsxP1-x/InP/ZnSe III-V alloyed core/shell quantum dots for the near-infrared
Kim, SW
Zimmer, JP
Ohnishi, S
Tracy, JB
Frangioni, JV
Bawendi, MG
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (30) : 10526 - 10532
[15] Optical gain and stimulated emission in nanocrystal quantum dots
Klimov, VI
Mikhailovsky, AA
Xu, S
Malko, A
Hollingsworth, JA
Leatherdale, CA
Eisler, HJ
Bawendi, MG
[J]. SCIENCE, 2000, 290 (5490) : 314 - 317
[16] Sequential growth of magic-size CdSe nanocrystals
Kudera, Stefan
Zanella, Marco
Giannini, Cinzia
Rizzo, Aurora
Li, Yanqin
Gigli, Giuseppe
Cingolani, Roberto
Ciccarella, Giuseppe
Spahl, Werner
Parak, Wolfgang J.
Manna, Liberato
[J]. ADVANCED MATERIALS, 2007, 19 (04) : 548 - +
[17] Larson DR, 2003, SCIENCE, V300, P1434, DOI 10.1126/science.1083780
[18] Stable PbSe/PbS and PbSe/PbSexS1-x core-shell nanocrystal quantum dots and their applications
Lifshitz, E.
Brumer, M.
Kigel, A.
Sashchiuk, A.
Bashouti, M.
Sirota, M.
Galun, E.
Burshtein, Z.
Le Quang, A. Q.
Ledoux-Rak, I.
Zyss, J.
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (50) : 25356 - 25365
[19] Quantum dot bioconjugates for imaging, labelling and sensing
Medintz, IL
Uyeda, HT
Goldman, ER
Mattoussi, H
[J]. NATURE MATERIALS, 2005, 4 (06) : 435 - 446
[20] Colloidal synthesis of nanocrystals and nanocrystal superlattices
Murray, CB
Sun, SH
Gaschler, W
Doyle, H
Betley, TA
Kagan, CR
[J]. IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 2001, 45 (01) : 47 - 56

← 1 2 3 →