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900308

Sigma-Aldrich

CdS/ZnS core-shell type quantum dots

lyophilized, fluorescence λem 425 nm, solid

Synonym(s):

Fluorescent nanocrystals, QDs

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.23

form

lyophilized
powder
solid

λmax

410 nm

fluorescence

λem 425 nm
λem 425 nm±10 nm, quantum yield >50%

functional group

carboxylic acid

storage temp.

−20°C

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Application

CdS/ZnS or CdSe/ZnS quantum dots (QDs) with carboxylic acid in lyophilized solid form can be readily reconstituted in DI water or DMSO to any desired concentration and are very stable in most buffer solutions with a pH range of 5-10. These QDs possess a zeta potential in the -30 mV to -50 mV range and can easily be reacted with amine containing molecules in DMSO or water. These QDs find applications in bioimaging and biosensing.

Legal Information

Product of Ocean Nanotech, LLC.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H350,H373

Hazard Classifications

Carc. 1B - STOT RE 2

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Quantum dot-based, quantitative, and multiplexed assay for tissue staining.
Xu H, et al.
ACS Applied Materials & Interfaces, 5, 2901-2907 (2013)
Single chain epidermal growth factor receptor antibody conjugated nanoparticles for in vivo tumor targeting and imaging.
Yang L, et al.
Small, 5, 235-243 (2009)
Zengyan Wei et al.
Soft matter, 8(26), 6871-6875 (2012-09-18)
Genetically-engineered collagen peptides were assembled into freestanding films when QDs are co-assembled as joints between collagen domains. These peptide based films show excellent mechanical properties with Young's modulus of ~20 GPa, much larger than most of multi-composite polymer films and

Articles

Advancements in Quantum Dot Solar Cells

Professor Sharma and colleagues review the synthesis and applications of this novel material. This includes a discussion of the unique properties of quantum dots and their suitability for solar cell applications, along with common synthesis techniques used to develop these materials.

Applications of Quantum Dots in Bioimaging and Bioassays

Professor Xiaohu Gao (University of Washington, USA) provides a overview of recent quantum dot (QD) advancements and their potential for advancing bioassay and bioimaging technologies.

Perovskite Quantum Dots Synthesis

Perovskite quantum dots research progresses overcoming challenges, enabling rapid development of light-emitting devices.

Cadmium-free Quantum Dots for Bioimaging

Cadmium-free quantum dots for bioimaging offer design and synthesis strategies, enhancing bioimaging and sensing applications.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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