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Researchers Submit Patent Application, "Alignment of Nanomaterials and Micromaterials", for Approval

February 13, 2014

By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Lu, Yi (Champaign, IL); Lee, Jung Heon (Champaign, IL); Yigit, Mehmet Veysel (Urbana, IL), filed on November 13, 2007, was made available online on January 30, 2014.

No assignee for this patent application has been made.

News editors obtained the following quote from the background information supplied by the inventors: "Recent progress in materials science has led to the development of singly functional nanomaterials such as nanoparticles. The ordered assembly of multifunctional nanomaterials is central to the development of integrated circuits designed for nanoelectronics, photonics, magnetics, such as spintronics, biosensors, and programmable or autonomous molecular machines. Furthermore, such functional nanomaterials are envisioned for use in integrated circuits adapted for nanoscale sensor arrays (Hagleitner et al. 2001), field-programmable gate-arrays (Heath et al. 1998), and cellular nonlinear networks (Yang et al. 2001). At the present time, however, the implementation of multifunctional nanomaterials in these application areas is limited owing to the lack of predictable assembly methods for these materials.

"To enable the application of nanomaterials suitable to these areas, assembly methodologies for generating multifunctional nanomaterials are required. Furthermore, the assembly of multifunctional nanoparticles into hierarchical structures having unique spatial resolution and functional specificities will become necessary for the aforementioned applications. In particular, multifunctional nanomaterials with controlled spatial resolution and high specificity will be important to permit template-directed assembly using 'one-pot' procedures.

"Nucleic acid polymers represent attractive candidate templates upon which multifunctional nanomaterials may be assembled. Nucleic acid polymers form predictable two-dimensional secondary structures based upon the complementary base-pairing relationships established between the purine and pyrimidine nucleobases. Furthermore, nucleic acid polymers can form three-dimensional tertiary structures of predictable specificity, shape and form that rely upon the hydrogen-bonding interactions between the nucleobases as well as base-stacking interactions between individual base-pairs. Provided that the derivatization and subsequent functionalization of the nucleic acid polymer do not interfere with its ability to form secondary and tertiary structures, a nucleic acid polymer represents a suitable candidate template for the assembly of multifunctional nanomaterials.

"In general, however, nucleic acid polymers have not been extensively used as templates for nanomaterial development because no systematic approach existed whereby nanomaterials could be precisely aligned along the polymer. Owing to the redundant nature of the monomeric subunits that comprise a typical nucleic acid polymer, only the 5' and 3' termini represent unique structures of any given nucleic acid molecule. The internal phosphodiester bonds that link the individual nucleotides within a nucleic acid polymer are identical in chemical composition and are not readily amenable to modification in a site-specific manner. Furthermore, the nucleobases offer limited functional groups that are amenable to chemical modification, as most functional groups of nucleobases participate in hydrogen-bonding interactions which are responsible for the secondary and tertiary structures formed. While nucleic acid polymers can form predictable two-dimensional and three-dimensional structures, the paucity of available unique sites within nucleic acids has rendered them less than practical templates for the development of multifunctional nanomaterials."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "In a first aspect, the invention is a method for preparing a nanoassembly that includes the step of reacting an assembly template with at least one nanomaterial to form the nanoassembly.

"In a second aspect, the invention is a nanoassembly that includes an assembly template and a nanomaterial.

"In a third aspect, the invention is a multifunctional nanoassembly that includes an assembly template, a first nanomaterial, and a second nanomaterial.

"In the fourth aspect, the invention is a method for preparing a multifunctional nanoassembly having a first nanomaterial and a second nanomaterial, which includes the steps of reacting the first nanomaterial with an assembly template and of reacting the second nanomaterial with the assembly template.

"In a fifth aspect, the invention is a method for preparing a microassembly that includes reacting an assembly template with a micromaterial to form the microassembly.

"In a sixth aspect, the invention is an assembly that includes a polymer template and a material, where the material comprises at least one member selected from the group consisting of a nanomaterial and a micromaterial.

"In a seventh aspect, the invention is a multifunctional assembly that includes a polymer template, a first material, and a second material. The first and second materials include at least one member selected from the group consisting of a nanomaterial and a micromaterial.

"In an eighth aspect, the invention is a method for preparing a multifunctional assembly having a first material and a second material that includes reacting the first material with an assembly template and reacting the second material with the assembly template."

For additional information on this patent application, see: Lu, Yi; Lee, Jung Heon; Yigit, Mehmet Veysel. Alignment of Nanomaterials and Micromaterials. Filed November 13, 2007 and posted January 30, 2014. Patent URL:

Keywords for this news article include: Patents, Nanomaterial, Nanoparticle, Nanotechnology, Emerging Technologies.

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Source: Politics & Government Week

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