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Literature DB >> 21161344

Aqueous synthesis of CdTe/CdSe core/shell quantum dots as pH-sensitive fluorescence probe for the determination of ascorbic acid.

Shan-Shan Yang¹, Cui-Ling Ren, Zhen-Yang Zhang, Jun-Jie Hao, Qin Hu, Xing-Guo Chen.

Abstract

By controlling the reflux time and the quantity of the shell materials, different sizes of thioglycollic acid (TGA) modified CdTe/CdSe core/shell quantum dots were synthesized in aqueous solution. This type of QDs was used for sensitive and selective determination of ascorbic acid in commercial tablets. Under optimal conditions, a good linearity was observed between the relative fluorescence (FL) intensity and the concentration of ascorbic acid in the range of 4.0 to 64.0 μg/mL with a correlation coefficient of 0.9968. The limit of detection was 2.4 μg/mL. This method was applied to the determination of the ascorbic acid in Vitamin C tablets and Vitamin C Yinqiao pills, and satisfactory results were obtained. © Springer Science+Business Media, LLC 2010

Entities: Chemical

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Year: 2010 PMID： 21161344 DOI： 10.1007/s10895-010-0788-9

Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217

14 in total

1. Formation of high-quality CdTe, CdSe, and CdS nanocrystals using CdO as precursor.

Authors: Z A Peng; X Peng
Journal: J Am Chem Soc Date: 2001-01-10 Impact factor: 15.419

2. Long-term multiple color imaging of live cells using quantum dot bioconjugates.

Authors: Jyoti K Jaiswal; Hedi Mattoussi; J Matthew Mauro; Sanford M Simon
Journal: Nat Biotechnol Date: 2002-12-02 Impact factor: 54.908

3. Aqueous layer-by-layer epitaxy of type-II CdTe/CdSe quantum dots with near-infrared fluorescence for bioimaging applications.

Authors: Yi Zhang; Yan Li; Xiu-Ping Yan
Journal: Small Date: 2009-02 Impact factor: 13.281

Aqueous synthesis of CdTe/CdSe core/shell quantum dots as pH-sensitive fluorescence probe for the determination of ascorbic acid.

1. Formation of high-quality CdTe, CdSe, and CdS nanocrystals using CdO as precursor.

2. Long-term multiple color imaging of live cells using quantum dot bioconjugates.

3. Aqueous layer-by-layer epitaxy of type-II CdTe/CdSe quantum dots with near-infrared fluorescence for bioimaging applications.

4. Quantum dot bioconjugates for ultrasensitive nonisotopic detection.

5. Semiconductor nanocrystals as fluorescent biological labels.

6. Sequential synthesis of type II colloidal CdTe/CdSe core-shell nanocrystals.

7. Ascorbate increases human oxaluria and kidney stone risk.

8. Selective synthesis of CdTe and high luminescence CdTe/CdS quantum dots: the effect of ligands.

9. Aqueous synthesis of type-II core/shell CdTe/CdSe quantum dots for near-infrared fluorescent sensing of copper(II).

10. Cadmium telluride quantum dots as pH-sensitive probes for tiopronin determination.

Review 1. Fluorescence probe for the convenient and sensitive detection of ascorbic acid.