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Sigma-Aldrich

Lumidot™ CdSe

480, core-type quantum dots, 5 mg/mL in toluene

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Synonym(s):
Cadmium monoselenide
Empirical Formula (Hill Notation):
CdSe
CAS Number:
1306-24-7
Molecular Weight:
191.37
MDL number:
MFCD00010917
eCl@ss:
32161000
PubChem Substance ID:
329760223

Quality Level

100

form

dispersion

concentration

5 mg/mL in toluene

particle size

2.1-2.3 nm

λmax

455-465 nm

fluorescence

λem 475-485 nm FWHM 24 nm

storage temp.

2-8°C

InChI

1S/Cd.Se

InChI key

AQCDIIAORKRFCD-UHFFFAOYSA-N

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General description

Organically stabilized cadmium selenide quantum dots in toluene

Application

Commercial Volumes of Quantum Dots: Controlled Nanoscale Synthesis and Micron-Scale Applications

Analysis Note

Particle size was determined by TEM according to the procedure of Yu, W. W., et al., Chem. Mater., 2003, 15, 2854.
Quantum yield was measured following the procedure of Qu, L., Peng, X., J. Am. Chem. Soc., 2002, 124-2049.

Other Notes

Lifetime one year if stored properly

Legal Information

Product of Nanoco Technologies sold under US and worldwide patents and patents pending.
Lumidot is a trademark of Sigma-Aldrich Co. LLC

Regulatory Information

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Lu Kong et al.
Journal of nanoscience and nanotechnology, 12(11), 8258-8265 (2013-02-21)
Quantum dots are being widely used in physics and in the biomedical industry in recent years due to their excellent optical characteristics. However, studies have shown that cadmium selenide core-shell quantum dots exhibit cytotoxicity. The present study investigates the induction
Shancheng Yan et al.
Journal of nanoscience and nanotechnology, 13(1), 23-32 (2013-05-08)
Semiconducting nanowire heterostructures are of particular interest because of their fascinating properties and potential applications in the field of nanoscale science. CdS, with a direct bandgap of 2.42 eV, is considered to be an excellent material for various optoelectronic applications
David T R Stewart et al.
Environmental toxicology and chemistry, 32(6), 1288-1294 (2013-02-19)
The present study addresses the bioaccumulation behavior of cadmium selenide quantum dots by Eisenia andrei earthworms in a terrestrial environment. Earthworms were exposed to quantum dot-treated soil for up to 4 wk and analyzed for cadmium and selenium concentration using
Svetlana V Kilina et al.
Physical review letters, 110(18), 180404-180404 (2013-05-21)
Quantum confinement can dramatically slow down electron-phonon relaxation in nanoclusters. Known as the phonon bottleneck, the effect remains elusive. Using a state-of-the-art time-domain ab initio approach, we model the observed bottleneck in CdSe quantum dots and show that it occurs
Bryan T Spann et al.
Optics express, 21 Suppl 1, A15-A22 (2013-02-15)
Ultrafast time-resolved absorption spectroscopy is used to investigate exciton dynamics in CdSe nanocrystal films. The effects of morphology, quantum-dot versus quantum-rod, and preparation of nanocrystals in a thin film form are investigated. The measurements revealed longer intraband exciton relaxation in
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