University of North Texas

Texas Woman's University

Mohammad A Omary

Sreekar Marpu

Chi Yang

Teresa D Golden

Iain W H Oswald

Waleed K Yaseen

Manal A Rawashdeh-Omary

Ruaa M Almotawa

The embodiments described herein pertains to a new design method to produce copper, silver or gold based metal functional coordination polymers with excellent potential towards optoelectronic devices, gas storage and separation, optical sensors, and other applications.

Coordination polymers of coinage metals synthesis and uses thereof

The hydrophobic and corrosion resistive film of cross-linked poly(hexafluoroisopropyl methacrylate) was prepared by photopolymerization. The starting materials were a monomer of 1,1,1,3,3,3-hexafluoroisopropyl methacrylate, a photoinitiator of hydroxycyclohexyl phenyl ketone, and a cross-linker of poly(ethyleneglycol diacrylate). Photopolymerization was used to start polymerization and to cure the polymer film on an aluminum surface. Drop-casting was used to deposit the fluoropolymer onto an aluminum substrate (AA 3003). The fluoropolymer film has high corrosion protection when measured by potentiodynamic polarization and open circuit potential techniques in an aqueous solution of 3.5% NaCl. Fourier-transform infrared spectroscopy was used to monitor the polymerization process. The dynamic contact angle technique was used to measure the hydrophobicity for the fluorinated polymer coating. Thermal stability of the fluorinated polymer was measured using thermogravimetric analysis. Treatment with strong acid followed by contact angle measurements before and after the treatment confirmed the chemical resistance for the coated aluminum.

Fluorinated polymers for corrosion protection of metal

Size-tunable phosphorescent particles may be formed through self-assembly of biocompatible linear polymers, such as chitosan and other linear polymers, that bear positive surface charges, through polyelectrolytic complexation to a polyanionic metal phosphor, such as polyanionic gold(I) phosphor (AuP). The phosphorescent hydrogel nanoparticles and thin films thereof are useful for imaging, sensing of biological molecules, detection of hypoxia, and light-emitting devices. The phosphorescent hydrogel particles can be formed from a variety of linear polymers by physical cross-linking using polyelectrolytic light-emitting species, without the need for the phosphorescent complex to be entrapped in an existing microsphere or nanosphere polymer particle.

Phosphorescent nanoparticles and their uses in biosensing and bioimaging

The present invention includes photochemical method of making hybrid metal-polymer microparticles in an aqueous, biocompatible solution by providing a metal (I) composition and one or more polymeric materials; applying an electromagnetic radiation to the metal (I) composition; converting the metal (I) composition to a metal (0) composition; forming one or more hybrid metal-polymer microparticles from the metal (0); capping the one or more hybrid metal-polymer microparticles; and stabilizing the one or more hybrid metal-polymer microparticles with the one or more polymeric materials to prevent agglomeration.

Facile method for making non-toxic biomedical compositions comprising hybrid metal-polymer microparticles

Bidentate heteroleptic square planar complexes of (pyridyl)azolates possess optical and electrical properties that render them useful for a wide variety of optical and electrical devices and applications. In particular, the complexes are useful for obtaining white or monochromatic organic light-emitting diodes ('OLEDs'), including doping-free OLEDs. Preferred forms also demonstrate semiconducting behavior and may be useful in a variety of other applications. Within the general complexes of (pyridyl)azolates, the metal and the ligands may be varied to impart different optoelectronic properties.

Bidentate heteroleptic square planar complexes of (pyridyl)azolates

Fluorinated metal-organic frameworks ('FMOFs') are capable of adsorbing and desorbing hydrocarbons, namely, C6-C8 hydrocarbon oil components (n-hexane, cyclohexane, benzene and toluene). FMOFs can be arranged in a variety of configurations and have internal hollow channels and cavities. In FMOFs, hydrogen atoms have been substituted completely or partially with fluorine atoms or fluorinated groups in each linking organic ligand. These FMOFs can adsorb C6-C8 hydrocarbons, up to 500 kg/mas demonstrated for toluene, through a combination of superhydrophobicity and capillary action. No water adsorption was detectable even under extreme conditions including moist air near 100% relative humidity and immersion in water for multiple weeks, demonstrating far superior water resistance to BPL carbon and zeolites. These materials are stable and can be readily recycled by simple desorption many times. The FMOFs have applications in removal or containment of organics, particularly in the fields of oil spill cleanup and hydrocarbon storage.

Fluorinated metal-organic frameworks for hydrocarbon storage

Homoleptic square planar complexes [M(N&#x39b;N)], wherein two identical N&#x39b;N bidentate anionic ligands are coordinated to the M(II) metal center, including bidentate square planar complexes of triazolates, possess optical and electrical properties that make them useful for a wide variety of optical and electrical devices and applications. In particular, the complexes are useful for obtaining white or monochromatic organic light-emitting diodes ('OLEDs'). Improved white organic light emitting diode ('WOLED') designs have improved efficacy and/or color stability at high brightness in single- or two-emitter white or monochrome OLEDs that utilize homoleptic square planar complexes, including bis[3,5-bis(2-pyridyl)-1,2,4-triazolato]platinum(II) (&#x201c;Pt(ptp)&#x201d;).

Organic light-emitting diodes from homoleptic square planar complexes

Fluorinated metal-organic frameworks ('FMOFs') are capable of adsorbing and desorbing gases and molecules. The FMOFs can be arranged in a variety of configurations and have internal hollow channels and cavities. In the FMOFs, hydrogen atoms have been substituted completely or partially with fluorine atoms or fluorinated groups in each linking organic ligand. The FMOFs have high densities, leading to an enhanced volumetric capacity for gas storage.

Growing community of inventors

Denton, TX, United States of America

Mohammad A Omary