Reversed-Phase HPLC Separation of Water-Soluble, Monolayer-Protected Quantum Dots

被引：12

作者：

Owens, Stephanie A. ^{[1
]}

Carpenter, Margaret C. ^{[1
]}

Sonne, James W. H. ^{[1
]}

Miller, Corwin A. ^{[1
]}

Renehan, Jack R. ^{[1
]}

Odonkor, Charles A. ^{[1
]}

Henry, Elizabeth M. ^{[1
]}

Miles, Deon T. ^{[1
]}

机构：

[1] Sewanee Univ S, Dept Chem, Sewanee, TN 37383 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 39期

关键词：

CAPPED CDTE NANOCRYSTALS; PHOTOLUMINESCENCE; CDSE; ACID; SIZE; CHROMATOGRAPHY; MICELLES; LIGAND; CELLS;

D O I：

10.1021/jp201554d

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：

The synthesis and characterization of water-soluble, monolayer-protected CdSe and ZnSe quantum dots (QDs) is described. The QDs were prepared using various water-soluble thiol ligands in different metal-to-thiol ratios. This work presents use of reversed-phase, high-performance liquid chromatography (RP-HPLC) to separate QDs of different sizes. Polydisperse QD samples were separated into monodisperse fractions using RP-HPLC, with resulting fwhm values <12 nm. The separation is based on the polarity of the surrounding thiol as well as the size of the nanopartide. In addition, the pH behavior of the water-soluble QDs was studied. The QDs appear to be most stable in basic solutions and are best preserved over long periods of time when dried.

引用

页码：18952 / 18957

页数：6

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