Abstract: A process is provided for precise self-assembly and re-arrangement of a three-dimensional terpyridine-based coordination complex. A plurality of terpyridine-containing ligands are reacted with at least one metal ion, in a pre-selected molar ratio, to form a self-assembled three-dimensional terpyridine-based coordination complex having a first configuration. A triggering event, such as exposure to light or dilution, causes the coordination complex to re-arrange to form at least two smaller, substantially identical, three-dimensional terpyridine-based coordination complexes, each having a second configuration that is different from the first configuration. Upon application of a second triggering event, such as concentration, the re-arrangement is reversed.

Abstract: Metallotriangle-based nanomolecules are formed by a one-step self-assembly of specifically chosen shaped poly-ligand monomers, the poly-ligand monomers coordinating with metal ions through coordinating ligands. The poly-ligand monomers are defined by vertex groups having arms extending therefrom and ending in coordinating ligands. Based on the desired metallotriangle-based nanomolecule structure to be assembled, specifically shaped poly-ligand monomers and metal ions are chosen and mixed in appropriate ratios so that coordinating ligands bind to metal ions and the poly-ligand monomers thus spontaneously self-assemble into the desired metallotriangle-based nanomolecule structure.

Abstract: A process is provided for precise self-assembly and re-arrangement of a three-dimensional terpyridine-based coordination complex. A plurality of terpyridine-containing ligands are reacted with at least one metal ion, in a pre-selected molar ratio, to form a self-assembled three-dimensional terpyridine-based coordination complex having a first configuration. A triggering event, such as exposure to light or dilution, causes the coordination complex to re-arrange to form at least two smaller, substantially identical, three-dimensional terpyridine-based coordination complexes, each having a second configuration that is different from the first configuration. Upon application of a second triggering event, such as concentration, the re-arrangement is reversed.

Abstract: Metallotriangle-based nanomolecules are formed by a one-step self-assembly of specifically chosen shaped poly-ligand monomers, the poly-ligand monomers coordinating with metal ions through coordinating ligands. The poly-ligand monomers are defined by vertex groups having arms extending therefrom and ending in coordinating ligands. Based on the desired metallotriangle-based nanomolecule structure to be assembled, specifically shaped poly-ligand monomers and metal ions are chosen and mixed in appropriate ratios so that coordinating ligands bind to metal ions and the poly-ligand monomers thus spontaneously self-assemble into the desired metallotriangle-based nanomolecule structure.

Abstract: The present invention provides an example for the construction of stable quantum dots, such as CdS quantum dots, on the surface of carbon nanotubes (CNTs) templated and stabilized, such as by attached 1?3 C-branched amide-based dendrons. The construction and method of preparation is applicable to both single- and multi-walled carbon nanotubes, other types of appropriately modified polymeric and oligomeric materials, along with the use of many other types of dendrons, and other materials capable of forming quantum dots.

Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.

Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.

Abstract: The invention is directed to quantum dot nanoparticles and methods of preparation. Using regioselective dendritic functionalized cellulose, quantum dots may be embedded in the modified cellulosic material. The quantum dot nanoparticles provide use for biotechnology or biomedicinal applications. Photooptical properties and morphology for use in as well as its biocompatibility were investigated.

Abstract: The invention relates to the formation of synthesized fractal constructs and the methods of chemical self-assembly for the preparation of a non-dendritic, nano-scale, fractal constructs or molecules. More particularly, the invention relates to fractal constructs formed by molecular self-assembly, to create synthetic, nanometer-scale fractal shapes. In an embodiment, a nanoscale Sierpinski hexagonal gasket is formed. This non-dendritic, perfectly self-similar fractal macromolecule is comprised of bisterpyridine building blocks that are bound together by coordination to (36) Ru and (6) Fe ions to form a nearly planar array of increasingly larger hexagons around a hollow center.

Abstract: The invention is directed to a method of preparing polymeric metallomacrocycles having measurable photo- and electroluminescence properties and devices using such materials. In an embodiment, an O-hexyl-3,5-bis(terpyridine)phenol ligand has been synthesized and transformed into a hexagonal Zn(II)-metallomacrocycle by a facile self-assembly procedure capitalizing on terpyridine-Zn(II)-terpyridine connectivity. The material is usable in an OLED device based on the photo- and electro-luminescence characteristics thereof.

Abstract: The present invention relates to a catalyst-containing nanofiber composition, comprising a ceramic nanofiber having a plurality of metal catalysts wherein the metal catalysts exist as dispersed particles partially embedded in the nanofiber and cover from about 1% to about 90% of the surface area of the ceramic nanofiber.

Abstract: The invention relates to the formation of synthesized fractal constructs and the methods of chemical self-assembly for the preparation of a non-dendritic, nano-scale, fractal constructs or molecules. More particularly, the invention relates to fractal constructs formed by molecular self-assembly, to create synthetic, nanometer-scale fractal shapes. In an embodiment, a nanoscale Sierpinski hexagonal gasket is formed. This non-dendritic, perfectly self-similar fractal macromolecule is comprised of bisterpyridine building blocks that are bound together by coordination to (36) Ru and (6) Fe ions to form a nearly planar array of increasingly larger hexagons around a hollow center.

Abstract: The invention is directed to a method of preparing polymeric metallomacrocycles having measurable photo- and electroluminescence properties and devices using such materials. In an embodiment, an O-hexyl-3,5-bis(terpyridine)phenol ligand has been synthesized and transformed into a hexagonal Zn(II)-metallomacrocycle by a facile self-assembly procedure capitalizing on terpyridine-Zn(II)-terpyridine connectivity. The material is usable in an OLED device based on the photo- and electro-luminescence characteristics thereof.

Abstract: The invention relates to the formation of synthesized fractal constructs and the methods of chemical self-assembly for the preparation of a non-dendritic, nano-scale, fractal constructs or molecules. More particularly, the invention relates to fractal constructs formed by molecular self-assembly, to create synthetic, nanometer-scale fractal shapes. In an embodiment, a nanoscale Sierpinski hexagonal gasket is formed. This non-dendritic, perfectly self-similar fractal macromolecule is comprised of bisterpyridine building blocks that are bound together by coordination to 36 Ru and 6 Fe ions to form a nearly planar array of increasingly larger hexagons around a hollow center.

Abstract: In accordance with the present invention, there is provided a method for preparing a reversible, self-assembly of an imbedded hexameric metallomacrocycle within a macromolecular superstructure. The method occurs by an intramolecular mechanism in which a macromolecular skeleton possesses multiple ligands capable of reversible assembly-disassembly triggered by the presence of metal ions.

Abstract: In accordance with the present invention, there is provided a method of preparing higher generation 1?3 C-branched polyamide dendrons. The combination of commercially available acryloyl chloride with 1?3 C-branched amines, e.g., di-tert-butyl 4-[2-(tert-butoxycarbonyl)ethyl]-4-aminoheptanedioate, resulted in generally high yields of acryl amides, which upon treatment with other reagents, generated the desired higher generation dendrons. These second and third generation dendrons were fully characterized and compared to the samples prepared from a convergent synthesis.

Abstract: A method for forming cascade polymers specifically utilizing the amine monomer of the formula The monomer is made by initially reacting nitromethane and CH2?CHCO2—TBu by nucleophilic addition to form the triester nitrotrialkanoate of the formula and then reducing the nitrosubstituent to afford the said amine monomer.

Abstract: There is provided a method and nanocomposite for the reversible assembly of nanotubes, such as oxidized single wall carbon nanotubes, based on metal coordination. The method produces a thermally stable, neutral nanocomposite possessing enhanced mechanical, electrical, physical and chemical properties for example. Disassembly can be provided by treatment with a competing ligand compound.

Abstract: A compound consists of a fractal-like, plain or organometallic array useful for energy storage devices. A dendrimer useful in the synthesis of the fractal-like compound includes a single ligating moiety bound to a surface of each quadrant of the dendrimer. A method of making metallo-based (macro) molecules includes the steps of combining monomers selected from the group consisting of bipyridal- and terpyridal-based ligands with connecting metals and self assembling macrocycles wherein the monomes are interconnected by the metals.

Abstract: The present invention provides an example for the construction of stable quantum dots, such as CdS quantum dots, on the surface of carbon nanotubes (CNTs) templated and stabilized, such as by attached 1?3 C-branched amide-based dendrons. The construction and method of preparation is applicable to both single- and multi-walled carbon nanotubes, other types of appropriately modified polymeric and oligomeric materials, along with the use of many other types of dendrons, and other materials capable of forming quantum dots.