Cadmium Telluride Quantum Dots
AE Quantum Dots™
|Formula||CAS No.||PubChem SID||PubChem CID||MDL No.||EC No||IUPAC Name||Beilstein
|PROPERTIES||Compound Formula||Mol. Wt.||Appearance||Melting Point||Boiling Point||Density||Monoisotopic Mass||Charge||MSDS|
|6.20 g/cm3||243.81||243.81||0||Safety Data Sheet|
American Elements is a manufacturer and supplier specializing in producing Cadmium Telluride (CdTe) quantum dots with spectra emission ranges from 510 nanometers (nm) to 780 nanometers (nm) wavelengths. They are charged inorganic particles that are available as a powder or in dispersion. Cadmium Telluride quantum dots are nanoparticles of certain semiconductor crystals with the novel property of having an extremely narrow emission spectrum (Gaussian Distribution) that is directly proportional to the particle's size. The smaller the particle the more its emission is blue shifted and conversely the larger the particle size, the more its emission is red shifted, thus allowing for the emission of the complete light spectra of color from the same material. CdTe Quantum Dots have the potential to turn light emitting diodes (LED) from merely display devises to illumination devices creating the first solid state lighting sources. technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement. American Elements manufactures quantum dots from several semiconductor materials, including Cadmium Telluride (CdTe), Cadmium Selenide/Zinc Sulfide (CdSe/ZnS), Lead Selenide (PbSe) and Zinc Cadmium Selenide/Zinc Sulfide (ZnCdSe/ZnS) nanoparticles with well-defined peak emission frequencies.
Cadmium is a Block D, Group 12, Period 5 element. The number of electrons in each of Cadmium's shells is 2, 8, 18, 18, 2 and its electronic configuration is [Kr] 4d10 5s2. In its elemental form cadmium's CAS number is 7440-43-9. The cadmium atom has a radius of 148.9.pm and its Van der Waals radius is 158.pm. Cadmium and its compounds are very toxic. Cadmium is a component of some of the lowest melting alloys; it is used in bearing alloys with low coefficients of friction and great resistance to fatigue. Cadmium is used extensively in electroplating, which accounts for about 60% of its use. It is also used in many types of solder, for standard E.M.F. cells, for nickel-cadmium batteries, and as a barrier to control nuclear fission. Cadmium compounds are used in black and white television phosphors and in blue and green phosphors for color television tubes and CRT monitors. Cadmium in glass and ceramic glazes creates a distinctive cadmium yellow. It forms a number of compounds, of which the sulfate is most common; the sulfide is used as a yellow pigment. Cadmium is similar to carbon in that it has a capacity to form stable covalently bonded molecular networks. Cadmium and its compounds are extremely toxic. Cadmium was first discovered by Fredrich Stromeyer in 1817. Cadmium, a common impurity in zinc ores, is isolated during the production of zinc. The name Cadmium originates from the Latin word 'cadmia' and the Greek word 'kadmeia'. See Cadmium research below.
Tellurium is a Block P, Group 16, Period 5 element. The number of electrons in each of Tellurium's shells is 2, 8, 18, 18, 6 and its electronic configuration is [Kr] 4d10 5s2 5p4. In its elemental form tellurium's CAS number is 13494-80-9. The tellurium atom has a radius of 143.2.pm and its Van der Waals radius is 206.pm. Tellurium is a p-type semiconductor, and shows greater conductivity in certain directions, depending on alignment of the atoms. It is grown in crystalline form with other elements such as indium telluride. Its conductivity increases slightly with exposure to light which makes many tellurides candidates for solar energy applications. Tellurium improves the machinability of copper and stainless steel, and its addition to lead decreases the corrosive action of sulfuric acid on lead and improves its strength and hardness. Tellurium is used as a basic ingredient in blasting caps, and is added to cast iron for chill control. Tellurium is used in ceramics. Bismuth telluride has been used in thermoelectric devices. Researchers at Singapore's A*STAR Data Storage Institute recently developed a new Iron–Tellurium phase-change material which may lead to new optical media and solid-state memory applications. Tellurium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Tellurium is most commonly sourced from the anode sludges produced as a byproduct of copper refining. Tellurium was first discovered by Franz Muller von Reichenstein in 1782. The name Tellurium originates from the Greek word 'Tellus' meaning Earth. See Tellurium research below.
|HEALTH, SAFETY & TRANSPORTATION INFORMATION|
|Material Safety Data Sheet||MSDS|
|Transport Information||UN 2570 6.1/PG 3|
|Globally Harmonized System of
Classification and Labelling (GHS)
|CADMIUM TELLURIDE SYNONYMS|
|Irtran 6, Cadmium monotelluride, tellanylidenecadmium, telluroxocadmium|
CUSTOMERS FOR CADMIUM TELLURIDE QUANTUM DOTS HAVE ALSO LOOKED AT
|Show Me MORE Forms of Cadmium|
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
|Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.|
Recent Research & Development for Cadmium
- Concentrations of arsenic, cadmium and lead in selected foodstuffs from Serbian market basket: Estimated intake by the population from the Serbia. Skrbic B, Zivancev J, Mrmoš N. Food Chem Toxicol. 2013 May 24. doi:pii: S0278-6915(13)00332-3. 10.1016/j.fct.2013.05.026.
- A baseline study of metals in cod (Gadus morhua) from the North Sea and coastal Norwegian waters, with focus on mercury, arsenic, cadmium and lead. Julshamn K, Duinker A, Nilsen BM, Nedreaas K, Maage A. Mar Pollut Bull. 2013 May 22. doi:pii: S0025-326X(13)00200-2. 10.1016/j.marpolbul.2013.04.018.
- Identification of quantitative trait loci for cadmium accumulation and distribution in rice (Oryza sativa). Yan YF, Lestari P, Lee KJ, Kim MY, Lee SH, Lee BW. Genome. 2013 Apr;56(4):227-32. doi: 10.1139/gen-2012-0106. 2013 Apr 3.
- Apocynin Ameliorates Cadmium-Induced Hypertension Through Elevation of Endothelium Nitric Oxide Synthase. Nwokocha CR, Baker A, Douglas D, McCalla G, Nwokocha M, Brown PD. Cardiovasc Toxicol. 2013 May 24.
- Gender differences in the evaluation of coronary artery disease with a cadmium-zinc telluride camera. Gimelli A, Bottai M, Quaranta A, Giorgetti A, Genovesi D, Marzullo P. Eur J Nucl Med Mol Imaging. 2013 May 24.
- Relationship between occupational exposure to cadmium, transaminases and ?-GT in workers exposed to urban stressors. Tomei F, Ciarrocca M, Rosati MV, Casale T, Di Pastena C, Nieto HA, Antuono V, Iannattone G, Tomei G, Caciari T. Ann Ig. 2013 Jul-Aug;25(4):353-63. doi: 10.7416/ai.2013.1937.
- Shape dependent plasmonic response and directed self assembly in a new semiconductor building block, indium doped cadmium oxide (ICO). Gordon TR, Paik T, Klein DR, Naik GV, Caglayan H, Boltasseva A, Murray CB. Nano Lett. 2013 May 23.
- [Distribution characteristics of soil cadmium in different textured paddy soil profiles and its relevance with cadmium uptake by crops]. Qin YS, Zhan SJ, Yu H, Tu SH, Wang ZY. Guang Pu Xue Yu Guang Pu Fen Xi. 2013 Feb;33(2):476-80. Chinese.
- Dual Regulation of Cadmium-Induced Apoptosis by mTORC1 through Selective Induction of IRE1 Branches in Unfolded Protein Response. Kato H, Katoh R, Kitamura M. PLoS One. 2013 May 16;8(5):e64344. doi: 10.1371/journal.pone.0064344. Print 2013.
- The effect of cadmium on the coagulation and fibrinolytic system in women with uterine endometrial cancer and myoma. Nasiadek M, Kilanowicz A, Darago A, Lazarenkow A, Michalska M. Int J Occup Med Environ Health. 2013 May 20.
- Band Gap Engineering of Zinc Selenide Thin Films Through Alloying with Cadmium Telluride. Al-Kuhaili MF, Kayani A, Durrani SM, Bakhtiari IA, Haider MB. ACS Appl Mater Interfaces. 2013 May 20.
- Removing cadmium by nano-pore zeolites to decrease aggressive behavior, stress, and hyperactivity. Faghir H, Hassanvand A, Gharibzadeh S. J Neuropsychiatry Clin Neurosci. 2013 Mar 1;25(2):E73. doi: 10.1176/appi.neuropsych.12060145. No abstract available.
- Transcriptional regulation of glutathione biosynthesis genes, ?-glutamyl-cysteine ligase and glutathione synthetase in response to cadmium and nonylphenol in Chironomus riparius. Nair PM, Park SY, Chung JW, Choi J. Environ Toxicol Pharmacol. 2013 Apr 15;36(2):265-273. doi: 10.1016/j.etap.2013.04.001.
- Exogenous treatment with indole-3-acetic acid and salicylic acid alleviates cadmium toxicity in wheat seedlings. Agami RA, Mohamed GF. Ecotoxicol Environ Saf. 2013 May 16. doi:pii: S0147-6513(13)00156-5. 10.1016/j.ecoenv.2013.04.013.
- Cadmium interferes with maintenance of auxin homeostasis in Arabidopsis seedlings. Hu YF, Zhou G, Na XF, Yang L, Nan WB, Liu X, Zhang YQ, Li JL, Bi YR. J Plant Physiol. 2013 May 14. doi:pii: S0176-1617(13)00103-X. 10.1016/j.jplph.2013.02.008.
- Cadmium in blood of Tunisian men and risk of bladder cancer: interactions with arsenic exposure and smoking. Feki-Tounsi M, Olmedo P, Gil F, Khlifi R, Mhiri MN, Rebai A, Hamza-Chaffai A. Environ Sci Pollut Res Int. 2013 May 15.
- Bone char: a clean and renewable phosphorus fertilizer with cadmium immobilization capability. Siebers N, Leinweber P. J Environ Qual. 2013 Mar-Apr;42(2):405-11. doi: 10.2134/jeq2012.0363.
- Phosphorylation of FOXO3a by PI3K/Akt pathway in HK-2 renal proximal tubular epithelial cells exposed to cadmium. Fujiki K, Inamura H, Matsuoka M. Arch Toxicol. 2013 May 15.
- Variation in Rice Cadmium Related to Human Exposure. Meharg AA, Norton G, Deacon C, Williams P, Adomako EE, Price A, Zhu Y, Li G, Zhao FJ, McGrath S, Villada A, Sommella A, De Silva PM, Brammer H, Dasgupta T, Islam MR. Environ Sci Technol. 2013 May 23.
- [Phytoavailability and chemical speciation of cadmium in different Cd-contaminated soils with crop root return]. Zhang J, Yu LL, Xin SZ, Su DC. Huan Jing Ke Xue. 2013 Feb;34(2):685-91. Chinese.
Recent Research & Development for Tellurides
- Gender differences in the evaluation of coronary artery disease with a cadmium-zinc telluride camera. Gimelli A, Bottai M, Quaranta A, Giorgetti A, Genovesi D, Marzullo P. Eur J Nucl Med Mol Imaging. 2013 May 24. [Epub ahead of print]
- Band Gap Engineering of Zinc Selenide Thin Films Through Alloying with Cadmium Telluride. Al-Kuhaili MF, Kayani A, Durrani SM, Bakhtiari IA, Haider MB. ACS Appl Mater Interfaces. 2013 May 30. [Epub ahead of print]
- Reply: cadmium-zinc-telluride SPECT in very morbidly obese patients routinely provides high-diagnostic-quality myocardial perfusion imaging. Kaufmann P, Gaemperli O. J Nucl Med. 2013 Apr;54(4):661-2. No abstract available.
- Phase transformation and thermoelectric properties of bismuth-telluride nanowires. Hsin CL, Wingert M, Huang CW, Guo H, Shih TJ, Suh J, Wang K, Wu J, Wu WW, Chen R. Nanoscale. 2013 Jun 7;5(11):4669-72. doi: 10.1039/c3nr00876b. Epub 2013 Apr 25.
- Synthesis, characterization and enhanced thermoelectric performance of structurally ordered cable-like novel polyaniline-bismuth telluride nanocomposite. Chatterjee K, Mitra M, Kargupta K, Ganguly S, Banerjee D. Nanotechnology. 2013 May 31;24(21):215703. doi: 10.1088/0957-4484/24/21/215703. Epub 2013 Apr 26.
- Synthesis and thermoelectric properties of compositional-modulated lead telluride-bismuth telluride nanowire heterostructures. Fang H, Feng T, Yang H, Ruan X, Wu Y. Nano Lett. 2013 May 8;13(5):2058-63. doi: 10.1021/nl400319u. Epub 2013 Apr 15.
- Shedding light on vacancy-doped copper chalcogenides: shape-controlled synthesis, optical properties, and modeling of copper telluride nanocrystals with near-infrared plasmon resonances. Kriegel I, Rodríguez-Fernández J, Wisnet A, Zhang H, Waurisch C, Eychmüller A, Dubavik A, Govorov AO, Feldmann J. ACS Nano. 2013 May 28;7(5):4367-77. doi: 10.1021/nn400894d. Epub 2013 Apr 22.
- Cadmium telluride quantum dots cause oxidative stress leading to extrinsic and intrinsic apoptosis in hepatocellular carcinoma HepG2 cells. Nguyen KC, Willmore WG, Tayabali AF. Toxicology. 2013 Apr 5;306:114-23. doi: 10.1016/j.tox.2013.02.010. Epub 2013 Feb 26.
- Large enhancement of nonlinear optical response in a hybrid nanobiomaterial consisting of bacteriorhodopsin and cadmium telluride quantum dots. Rakovich A, Nabiev I, Sukhanova A, Lesnyak V, Gaponik N, Rakovich YP, Donegan JF. ACS Nano. 2013 Mar 26;7(3):2154-60. doi: 10.1021/nn3049939. Epub 2013 Mar 8.
- d-penicillamine capped cadmium telluride quantum dots as a novel fluorometric sensor of copper(II). Mohammad-Rezaei R, Razmi H, Abdolmohammad-Zadeh H. Luminescence. 2013 Feb 28. doi: 10.1002/bio.2484. [Epub ahead of print]
- Communication: Van der Waals corrections for an improved structural description of telluride based materials. Micoulaut M. J Chem Phys. 2013 Feb 14;138(6):061103. doi: 10.1063/1.4792195.
- Cadmium-zinc-telluride SPECT in very morbidly obese patients routinely provides high-diagnostic-quality myocardial perfusion imaging. Schwartz RG, Wexler O, Peterson B, Schwartz AM, Mis FJ, Mackin M. J Nucl Med. 2013 Apr;54(4):661. doi: 10.2967/jnumed.112.117960. Epub 2013 Jan 31. No abstract available.
- Simulation and experimental characterization of the point spread function, pixel saturation, and blooming of a mercury cadmium telluride focal plane array. Soehnel G, Tanbakuchi A. Appl Opt. 2012 Nov 20;51(33):7987-93. doi: 10.1364/AO.51.007987.
- Comparison between stress myocardial perfusion SPECT recorded with cadmium-zinc-telluride and Anger cameras in various study protocols. Verger A, Djaballah W, Fourquet N, Rouzet F, Koehl G, Imbert L, Poussier S, Fay R, Roch V, Le Guludec D, Karcher G, Marie PY. Eur J Nucl Med Mol Imaging. 2013 Feb;40(3):331-40. doi: 10.1007/s00259-012-2292-8. Epub 2012 Nov 27.
- Iron telluride nanorods-based system for the detection of total mercury in blood. Roy P, Lin ZH, Liang CT, Chang HT. J Hazard Mater. 2012 Dec;243:286-91. doi: 10.1016/j.jhazmat.2012.10.033. Epub 2012 Oct 23.
- Caesium diuranium hexa-telluride. Mesbah A, Ibers JA. Acta Crystallogr Sect E Struct Rep Online. 2012 Oct 1;68(Pt 10):i76. doi: 10.1107/S1600536812038512. Epub 2012 Sep 19.
- Thermoelectric characterization of bismuth telluride nanowires, synthesized via catalytic growth and post-annealing. Hamdou B, Kimling J, Dorn A, Pippel E, Rostek R, Woias P, Nielsch K. Adv Mater. 2013 Jan 11;25(2):239-44. doi: 10.1002/adma.201202474. Epub 2012 Nov 2.
- One-pot preparation of highly fluorescent cadmium telluride/cadmium sulfide quantum dots under neutral-pH condition for biological applications. Zhu Y, Li Z, Chen M, Cooper HM, Lu GQ, Xu ZP. J Colloid Interface Sci. 2013 Jan 15;390(1):3-10. doi: 10.1016/j.jcis.2012.08.003. Epub 2012 Oct 2.
- Imaging properties of small-pixel spectroscopic x-ray detectors based on cadmium telluride sensors. Koenig T, Schulze J, Zuber M, Rink K, Butzer J, Hamann E, Cecilia A, Zwerger A, Fauler A, Fiederle M, Oelfke U. Phys Med Biol. 2012 Nov 7;57(21):6743-59. doi: 10.1088/0031-9155/57/21/6743. Epub 2012 Oct 3.
- Sn-doped bismuth telluride nanowires with high conductivity. Mi G, Li L, Zhang Y, Zheng G. Nanoscale. 2012 Oct 21;4(20):6276-8.
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