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662461

Sigma-Aldrich

Lumidot CdSe

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

Synonym(s):

Cadmium monoselenide, Cadmium selenide

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About This Item

Empirical Formula (Hill Notation):
CdSe
CAS Number:
Molecular Weight:
191.37
MDL number:
UNSPSC Code:
26111700
PubChem Substance ID:

Quality Level

form

dispersion

concentration

5 mg/mL in toluene

particle size

6.2-7.7 nm

λmax

615-625 nm

fluorescence

λem 635-645 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

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

signalword

Danger

Hazard Classifications

Aquatic Chronic 2 - Asp. Tox. 1 - Flam. Liq. 2 - Repr. 2 - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

target_organs

Central nervous system, Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

39.2 °F

flash_point_c

4 °C

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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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
R Kostić et al.
Journal of nanoscience and nanotechnology, 12(11), 8528-8536 (2013-02-21)
In this paper the electronic spectra and optical properties of one-electron spherical quantum dot (QD) are presented. QD is composed of CdSe core surrounded by ZnS shell (barrier) CdSe shell and finally by medium of very high potential barrier (SiO2)
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
Yuanyuan Wang et al.
Inorganic chemistry, 52(6), 2933-2938 (2013-03-06)
Four [(CdSe)13(RNH2)13] derivatives (R = n-propyl, n-pentyl, n-octyl, and oleyl) are prepared by reaction of Cd(OAc)2·2H2O and selenourea in the corresponding primary-amine solvent. Nanoclusters grow in spontaneously formed amine-bilayer templates and are characterized by elemental analysis, IR spectroscopy, UV-vis spectroscopy

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