Quantum Materials Corp. (fka QTMM)

[puravida19]

High Points of the Feb 4, 2010 Patent
Synthesis of Uniform Nanoparticle Shapes with High Selectivity

A Layman’s translation of science to English, FWIW

Rice University Patent link here

BACKGROUND

[0008]more cost-effective method of production and better shape selectivity

[0009]synthesis of nanoparticle tetrapods of high yield with reproducibility, particularly suitable for CdSe tetrapods, easy to produce, environmentally friendly and economically viable
methods may be applicable for synthesis of other shapes and/or other compositions, in the areas of petroleum refining, chemicals production, environmental cleanup, or in electronic industry for printable circuitry and sensors.

[0010] patent covers non-spherical nanoparticles, made a certain way, with a certain group of chemicals and separating them from the chemical mixture

[0011-0018] methods can make other nanoparticles using other metal or non-metal sources (in many combinations – this protects future uses of the process or method)

[0019-0021] the claim of 75-100 percent nanoparticle product isolated from the mixture – Tetrapods can be made with 80, 85, 90, 95 or more percent selectivity. Other materials can make nanoparticles with high selectivity too.

[0022] Tetrapod arm length and width can be specifically controlled with high selectivity and Tetrapods can be made with high uniformity of arm length

[0023] New discovery that ammonium compounds are an improvement on current methodology using “charge interactions” rather than “coordination/covalent bonding”.

DESCRIPTION OF EMBODIMENTS OF THE INVENTION

[0033]Quaternary ammonium compounds can induce shape formation of CdSe Tetrapod quantum dots, with uniform arm lengths and high selectivity. Both the formation of QD and the shape are affected by use of these compounds.

[0034-0044] describes the specific processes and results of experiments

[0045]Tetrapod QD shape and size control with high selectivity and size uniformity demonstrated for the first time with certain compounds in new method! Additionally, it is a ‘greener’ technology and can be scalable!

[0046-0061] description of experiments

[0062] Summary of claims

[0064] Patent embodiments should not preclude variations and modifications which should also be included to include other forms of nanoparticles, for example, some which might have a higher quantum yield (bet. 5-10%) of fluorescence than other QD of corresponding compositions.

[0065] The tetrapods do not need size sorting due to uniformity, the cost of the synthesis is reduced by 200 times and is scalable, and the compounds a biodegradable and safe, and so are green and environmentally friendly.


Note: not included in the patent are claims for efficiency. Patent covers materials, method and conversion rate plus possible variations to come. If anything is left out you think is important, please post it to the board and we will add it to this post.

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