The inorganic size of these QDs is approximately 8.1 nm and the hydrodynamic size is approximately 18 nm.
900226
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
Recommended Products
form
dispersion
Quality Level
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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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.
Hazard Statements
Precautionary Statements
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
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
EU REACH Annex XVII (Restriction List)
CAS No.
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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
Articles
Cadmium-free quantum dots for bioimaging offer design and synthesis strategies, enhancing bioimaging and sensing applications.
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What is the exact size (in nm) of this QD?
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The CdSe/ZnS quantum dots (product no. 900226) are indeed capable of single-photon emission. Some literature sources mention the use of quantum dots from Sigma-Aldrich as single-photon sources.
1 answer-
It is advised that all fluorophores should exhibit single-photon emission. Additionally, our quantum dots (QDs) also demonstrate single-photon emission.
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