Quantifying the density of surface capping ligands on semiconductor quantum dots

2015 ◽  
Author(s):  
Naiqian Zhan ◽  
Goutam Palui ◽  
Jan-Philip Merkl ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots ◽  
Surface Capping ◽  
Capping Ligands

Understanding the Role of Surface Capping Ligands in Passivating the Quantum Dots Using Copper Dopants as Internal Sensor

2016 ◽  
Vol 120 (35) ◽  
pp. 19785-19795 ◽  
Author(s):  
G. Krishnamurthy Grandhi ◽  
Arunkumar M. ◽  
Ranjani Viswanatha
Keyword(s):  
Quantum Dots ◽  
Surface Capping ◽  
Capping Ligands

scholarly journals Ligand removal from CdS quantum dots for enhanced photocatalytic H2 generation in pH neutral water

2016 ◽  
Vol 4 (8) ◽  
pp. 2856-2862 ◽  
Author(s):  
Christina M. Chang ◽  
Katherine L. Orchard ◽  
Benjamin C. M. Martindale ◽  
Erwin Reisner
Keyword(s):  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Cds Quantum Dots ◽  
Photocatalytic Hydrogen Evolution ◽  
H2 Generation ◽  
Surface Capping ◽  
Cds Qds ◽  
Neutral Water ◽  
Photocatalytic H2 Generation ◽  
Capping Ligands

Photocatalytic hydrogen evolution activity of CdS QDs is 175 times higher in pH neutral water when surface capping ligands are removed.

A Comparison of the Photophysical Properties of Thiolate-Capped CdS Quantum Dots with Thiolate-Capped CdS Molecular Clusters

1999 ◽  
Vol 571 ◽  
Author(s):  
Lee K. Yeung ◽  
Kelly Sooklal ◽  
Rahina Mahtab ◽  
Bin Zhang ◽  
Richard D. Adams ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Property ◽  
Quantum Dot ◽  
Photophysical Properties ◽  
Molecular Clusters ◽  
Semiconductor Quantum Dots ◽  
Size Distributions ◽  
Cds Quantum Dots ◽  
Capping Ligands ◽  
Made In

ABSTRACTIn the last several years, great advances have been made in the ability to synthesize semiconductor quantum dots with very narrow size distributions. Here, we report the synthesis of a series of thiolate-capped CdS quantum dots having reasonably narrow size distributions and make optical property comparisons to the crystallographically defined CdS molecular clusters having essentially “zero” size distribution. These clusters contain a “Cd10S4” core and thiolate/halide capping ligands. The luminescence of the molecular clusters, like the nanoparticles, is greatly influenced by the nature of the capping ligands. Additionally, the luminescence of the molecular clusters can be quite similar to that observed for their larger quantum dot counterparts.

Semiconductor Quantum Dots for Multicolor Fluorescence Imaging and Spectroscopy of Single Cancer Cells

2003 ◽  
Vol 773 ◽  
Author(s):  
Xiaohu Gao ◽  
Shuming Nie ◽  
Wallace H. Coulter
Keyword(s):  
Quantum Dots ◽  
Cancer Cells ◽  
Fluorescence Imaging ◽  
Organic Dyes ◽  
Fluorescent Proteins ◽  
Single Cells ◽  
Quantitative Imaging ◽  
Semiconductor Quantum Dots ◽  
Single Cancer ◽  
Imaging And Spectroscopy

AbstractLuminescent quantum dots (QDs) are emerging as a new class of biological labels with unique properties and applications that are not available from traditional organic dyes and fluorescent proteins. Here we report new developments in using semiconductor quantum dots for quantitative imaging and spectroscopy of single cancer cells. We show that both live and fixed cells can be labeled with multicolor QDs, and that single cells can be analyzed by fluorescence imaging and wavelength-resolved spectroscopy. These results raise new possibilities in cancer imaging, molecular profiling, and disease staging.

Hot Topic and Challenge of Semiconductor Quantum Dots as Fluorescence Labels*

2010 ◽  
Vol 37 (1) ◽  
pp. 103-110 ◽  
Author(s):  
Chang-Yan LI ◽  
Qian LI ◽  
Hai-Tao LIU ◽  
Jun ZHANG ◽  
DAMIRIN Aletangaole
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots
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