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900332

Sigma-Aldrich

CdS/ZnS core-shell type quantum dots

lyophilized, fluorescence λem 450 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

435 nm

fluorescence

λem 450 nm
λem 450 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 readily be reconstituted in DI water or DMSO to any desired concentration and are very stable in most buffer solutions in the pH range of 5-10. These QDs possess zeta potential in -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

signalword

Danger

hcodes

H350,H373

Hazard Classifications

Carc. 1B - STOT RE 2

Storage Class

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

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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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
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
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

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