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Key Documents

900226

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots

carboxylic acid functionalized, fluorescence λem 645 nm, 1 mg/mL in H2O

Synonym(s):

Fluorescent nanocrystals, QDs

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About This Item

Linear Formula:
CdSe/ZnS
UNSPSC Code:
26111700
NACRES:
NA.23

form

dispersion

Quality Level

100

concentration

1 mg/mL in H2O

fluorescence

λem 645 nm
λem 645 nm±10 nm, quantum yield >50%

functional group

carboxylic acid

storage temp.

2-8°C

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D-2-脱氧葡萄糖 ≥98% (GC), BioXtra

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D-2-脱氧葡萄糖

甲基α-D-吡喃葡萄糖苷 ≥99% (GC)

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biological source

synthetic (organic)

biological source

synthetic

biological source

synthetic (organic)

biological source

synthetic (organic)

technique(s)

gas chromatography (GC): suitable

technique(s)

gas chromatography (GC): suitable, inhibition assay: suitable

technique(s)

gas chromatography (GC): suitable

technique(s)

gas chromatography (GC): suitable

assay

≥99% (GC)

assay

≥98% (GC)

assay

≥98% (GC)

assay

≥99% (GC)

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

solubility

H2O: soluble 330 mg/mL, clear, colorless

solubility

H2O: 0.250 g/5mL

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

water: 50 mg/mL, clear, colorless

form

crystalline

form

crystalline

form

powder

form

powder

General description

Reactive group: Carboxylic acid.

Application

The organic layer of the CdS/ZnS or CdSe/ZnS quantum dots (QDs) with carboxylic acid as reactive group consist of a monolayer of oleic acid/octadecylamine and a monolayer of amphiphilic polymer. The total thickness of organic layers on these QDs is approximately 4 nm. They find many applications in bioimaging and biosensing.[1][2][3]

Caution

Do not freeze.

Legal Information

Product of Ocean Nanotech, LLC.

Pictograms

Environment
GHS09

Hazard Statements

H411

Precautionary Statements

P273 - P391 - P501

Hazard Classifications

Aquatic Chronic 2

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

  • Specification Sheet

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    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCV4947
    MKCV7065
    MKCW1078
    MKCW4064
    MKCT9613

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    Hong Xu et al.
    ACS applied materials & interfaces, 5(8), 2901-2907 (2013-04-05)
    The excellent optical properties of quantum dots (QDs), such as high brightness, high photostability, continuous absorption, and narrow emission bandwidth, make them ideal as optical labels to develop QD-based immunohistofluorescence (IHF) imaging for multiplexing cancer biomarker detection on formalin-fixed and
    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
    Lily Yang et al.
    Small (Weinheim an der Bergstrasse, Germany), 5(2), 235-243 (2008-12-18)
    Epidermal growth factor receptor (EGFR) targeted nanoparticle are developed by conjugating a single-chain anti-EGFR antibody (ScFvEGFR) to surface functionalized quantum dots (QDs) or magnetic iron oxide (IO) nanoparticles. The results show that ScFvEGFR can be successfully conjugated to the nanoparticles

    Articles

    Cadmium-free Quantum Dots for Bioimaging

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    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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