Colloidal nanocrystals with high photoluminescence quantum...

Compositions – Inorganic luminescent compositions – Zinc or cadmium containing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C423S509000, C423S566100, C252S30140R, C252S30140S, C252S30160R

Reexamination Certificate

active

06869545

ABSTRACT:
The present invention provides new compositions containing colloidal nanocrystals with high photoluminescence quantum yields, new synthetic methods for the preparation of highly luminescent colloidal nanocrystals, as well as methods to control the photoluminescent properties of colloidal nanocrystals. The new synthetic methods disclosed herein allow photoemission brightness (quantum yield) to be correlated with certain adjustable nanocrystal growth parameters associated with a given synthetic scheme.

REFERENCES:
patent: 5260957 (1993-11-01), Hakimi et al.
patent: 5575940 (1996-11-01), Lofftus
patent: 6207229 (2001-03-01), Bawendi et al.
patent: 6326144 (2001-12-01), Bawendi et al.
patent: 6576291 (2003-06-01), Bawendi et al.
patent: 6607829 (2003-08-01), Bawendi et al.
patent: 6617583 (2003-09-01), Bawendi et al.
patent: 20020066401 (2002-06-01), Peng et al.
patent: 20020071952 (2002-06-01), Bawendi et al.
Rotman, David, “Quantum Dot Com,”Technology Review, Jan./Feb. 2000, pp. 51-57.
Wang, Y. Andrew et al., “Stabilization of Inorganic Nanocrystals by Organic Dendrons,”J. Am. Chem Soc., vol. 124, No. 10, 2002, pp. 2293-2298.
Brust,Mathias et al., “Synthesis of Thiol-derivatised Gold Nanoparticles in a Two-phase Liquid-Liquid System,”J. Chem. Soc. Chem. Commun., 1994, pp. 801-802.
Alivisatos, A.P., “Semiconductor Clusters, Nanocrystals, and Quantum Dots.”Science, vol. 271, Feb. 16, 1996, pp. 933-937.
Alivisatos, A.P., et al., “Organization of ‘nanocrystal molecules’ using DNA,”Nature, vol. 382, Aug. 15, 1996, pp. 609-611.
Peng, Xiaogang, et al., “Synthesis and Isolation of a Homodimer of Cadmium Selenide Nanocrystals,”AAngew. Chem. Int. Ed., vol. 36, 1997, pp. 145-147.
Weiss, Peter, “Connect the Dots: Transforming sunlight into electricity by means of quantum dust,”Science News, vol. 157, Jun. 17, 2000, pp. 392-394.
Shi, Jing, et al., [Abstract] “Magnetic Clusters in Molecular Beams, Metals, and Semiconductors,” Science, vol. 271, Feb. 16, 1996, pp. 937-938.
Research Summary, http://web.mit.edu/chemistry
anoclusters/research.html, Jul. 31, 2000.
Artemyev, Mikhail V., et al., “Light Trapped in a Photonic Dot: Microspheres Act as a Cavity for Quantum Dot Emission,”Nano Letters, vol. 1, No. 6, 2001, pp. 309-314.
Brennan, J.G., et al., “Bulk and Nanostructure Group II-VI Compounds from Molecular Organometallic Precursors,”Chem. Mater., vol. 2, No. 4, 1990, pp. 403-409.
Bruchez Jr., Marcel, et al., “Semiconductor Nanocrystals as Fluorescent Biological Labels,”Science, vol. 281, Sep. 25, 1998, pp. 2013-2016.
Chan, Warren C. W., et al., “Quantum Dot Bioconjugates for Ultrasensitive Nonisotopic Detection,”Science, vol. 281, Sep. 25, 1998, pp. 2016-2018.
Cumberland, Scott L., et al., “Inorganic Clusters as Single-Source Precursors for Preparation of CdSe, ZnSe, and CdSe/ZnS Nanomaterials,”Chem. Mater., vol. 14, No. 4, 2002, pp. 1576-1584.
Dabbousi, B.O., et al., “(CdSe)ZnS Core-Shell Quantum Dots: Synthesis and Characterization of a Size Series of Highly Luminescent Nanocrystallites,”J. Phys. Chem. B, vol. 101, No. 46, 1997, pp. 9463-9475.
Hines, Margaret A., et al., “Bright UV-Blue Luminescent Colloidal ZnSe Nanocrystals,”J. Phys. Chem. B, vol. 102, No. 19, 1998, pp. 3655-3657.
Hines, Margaret A., et al., “Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe Nanocrystals,”J. Phys. Chem., vol. 100, No. 2, 1996, pp. 468-471.
Hoheisel, W., et al., “Threshold for quasicontinuum absorption and reduced luminescence efficiency in CdSe nanocrystals,”J. Chem. Phys., vol. 101, No. 10, 1994, pp. 8455-8460.
Jun, Young-wook, et al., “Controlled Synthesis of Multi-armed CdS Nanorod Architectures Using Monosurfactant System,”J. Am. Chem. Soc., vol. 123, No. 21, 2001, pp. 5150-5151.
Klimov, V. I., “Optical Gain and Stimulated Emission in Nanocrystal Quantum Dots,”Science, vol. 290, Oct. 13, 2000, pp. 314-317.
Labella, V. P., et al., “Atomic Structure of the GaAs(001)-(2×4) Surface Resolved Using Scanning Tunneling Microscopy and First-Principles Theory,”Physical Review Letters, vol. 83, No. 15, Oct. 11, 1999, pp. 2989-2992.
Lee, Jinwook, et al., “Full Color Emission from II-VI Semiconductor Quantum Dot-Polymer Composites”Adv. Mater.,vol. 12, No. 15, Aug. 2, 2000, pp. 1102-1105.
Lemon, Buford I., et al., “Preparation and Characterization of Dendrimer-Encapsulated CdS Semiconductor Quantum Dots,”J. Am. Chem. Soc., vol. 122, No. 51, 2000, pp. 12886-12887.
Murray, C.B., et al., “Synthesis and Characterization of Nearly Monodispensers CdE (E=S, Se, Te) Semiconductor Nanocrystallites,”J. Am. Chem. Soc., vol. 115, 1993, pp. 8706-8715.
Norris, D.J., et al., “High-Quality Manganese-Doped ZnSe Nanocrystals,”Nano Letters, vol. 1, No. 1, 2001, pp. 3-7.
Peng, Xiaogang, et al., “Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photstabiliy and Electronic Accessibility,”J. Am. Chem. Soc., vol. 119, No. 30, 1997, pp. 7019-7029.
Peng, Xiaogang, et al.; “Kinetics of II-VI and III-V Colloidal Semiconductor Nanocrystal Growth: ‘Focusing ’ of Size Distributions,”J. Am. Chem. Soc., vol. 120, No. 21, 1998, pp. 5343-5344.
Peng, Xiaogang, et al., “Shape control of CdSe nanocrystals,”Nature, vol. 404, Mar. 2, 2000, pp. 59-61.
Peng, Z. Adam, et al., “Formation of High-Quality CdTe, CdSe, and CdS Nanocrystals Using CdO as Precursor,”J. Am. Chem. Soc., vol. 123, No. 1, 2001, pp. 183-184.
Peng, Z. Adam, et al., “Mechanisms of the Shape Evolution of CdSe Nanocrystals,”J. Am. Chem. Soc., vol. 123, No. 7, 2001, pp. 1389-1395.
Pickett, Nigel L., et al., “Syntheses of Semiconductor Nanoparticles Using Single-Molecular Precursors,”The Chemical Record, vol. 1, 2001, pp. 467-479.
Talapin, Dmitri V., et al., “Highly Luminescent Monodisperse CdSe and CdSe/ZnS Nanocrystals Synthesized in a Hexadecylamine-Trioctylphosphine Mixture,”Nano Letters, vol. 1, No. 4, 2001, pp. 207-211.
Qu, Lianhua, et al., “Alternative Routes toward High Quality CdSe Nanocrystals,”Nano Letters, vol. 1, No. 6, 2001, pp. 333-337.
Vossmeyer, T., et al., “CdS Nanoclusters: Synthesis, Characterization, Size Dependent Oscillator Strength, Temperature Shift of the Excitonic Transition Energy, and Reversible Absorbance Shift,”J. Phys. Chem, vol. 98, No. 13, 1994, pp. 7665-7673.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Colloidal nanocrystals with high photoluminescence quantum... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Colloidal nanocrystals with high photoluminescence quantum..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Colloidal nanocrystals with high photoluminescence quantum... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3423836

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.