Home » Semiconductor Quantum Dots (Zinc Selenide /Zinc Sulphide-PEG-COOH QDs)

ZNSE/ZNS QDS (WATER SOLUBLE)

Stock No. CAS MSDS Specification COA
NS6130-12-000188 1315-09-9 Specification pdf COA pdf

Semiconductor Quantum Dots (Zinc Selenide /Zinc Sulphide-PEG-COOH QDs)

Semiconductor Quantum Dots

Semiconductor Quantum Dots (Zinc Selenide /Zinc Sulphide-PEG-COOH QDs)

Quality Control: Each lot of NANOSHEL Semiconductor Quantum Dots was tested successfully.

Zinc Selenide /Zinc Sulphide-PEG-COOH QDs – 430±10nm

Zinc Selenide /Zinc Sulphide-PEG-COOH QDs – 430±10nm

 
Product Name ZnSe/ZnS-PEG-COOH Quantum Dots
Stock No. NS6130-12-000188
CAS 1315-09-9 Confirm
Purity 99.9% Confirm
Composition ZnSe/ZnS Confirm
Emission Peak 430±10nm Confirm
Surface Group PEG-COOH Confirm
Solvent Water
Application Bio-Conjugation with Bio-Molecules
Main Inspect Verifier Manager QC

Expert Reviews

Dr. Ms. Kamiko Chang
Dr. Ms. Kamiko Chang, Ph.D(University of Science and Technology Beijing, China)

QDs have particularly interesting fluorescence properties, the emission wavelength depends strongly on the particle size and the nature of the corresponding phase, it is possible then to excite them in a wide wavelengths range below the wavelength of fluorescence. Their fluorescence performance exceeds those of conventional organic dyes. In addition to that, the quantum yield fluorescence and emission wavelength are greatly influenced by the particle size, which is directly related to their method of preparation, the nature and proportion of the doping element.


Dr. Nicholaos G. Demas
Dr. Nicholaos G. Demas, (Newcastle University School Of Machanical & Systems Engg. UK)

Structuring agents (ligands) as organic molecules play a key role in the stability of the nanocrystals, they surround the surface of the nanocrystals by steric repulsion between particles, allowing them suspended in a suitable solvent, a lack of ligands leads to particle aggregation. The affinity of ligands with particle surface depends on the interaction of their functional groups and their chain length with the surface.


Dr. Bruce Perrault
Dr. Bruce Perrault, Ph.D (Georgia Institute of Technology (Georgia Tech), USA)

The ligands are not linked to the surface, but they are in constant exchange between the free and the bound forms which allows the particles to grow during synthesis. In general, the ligands have growth control ability, several types of ligands can be used in the syntheses, and their relative affinity to the surface is the parameter which scientists use to modify the reactivity of different crystal faces to obtain particular sizes and shapes of nanocrystals. The ligands may also play a direct role in the reaction mechanism, leading to different crystal structures.


Dr. Huojin Chan
Dr. Huojin Chan, (University of Science and Technology of China, Hefei, Anhui, China)

Nevertheless, ligands have a capacity to burn off the ability of the nanocrystals surface, the dangling bonds due to surface atoms can create loads that cannot be compensated by neutral ligands. In addition, the ligands form an insulating layer that can be used to confine the charges in the nanocrystal and protect their fluorescence even without shell.


Dr. Darren Chandler
Dr. Darren Chandler, Ph.D(Manchester Metropolitan University, U.K)

Surface modified Znse/Zns quantu dots have cubic zinc blende structure. The enhancement of the luminescent ZnSe/Zns QD by doping the main phase using various elements as metals, transition metals and halides can serve for imaging of the positive cells especially used for cancer identification cells and life cell imaging. The application was based on conjugated ZnS using folic acid to detect cancer in lung fibroblast cell.


Semiconductor Quantum Dots

Semiconductor Quantum Dots