Abstract: Methods for preparing nc-Ge/GeO2 composites by under reductive thermal processing conditions are described. Also described are methods of preparing freestanding nc-Ge via release from the nc-Ge/GeO2 composites.

Abstract: Novel aromatic ether-containing monomers are described along with processes for their preparation and their polymerization into corresponding aromatic ether-containing polyfluorenes. These polyfluorenes exhibited stable blue-emission and therefore have application in polymer light-emitting devices.

Abstract: The present invention relates to a method of preparing silicon germanium alloy nanocrystals by the simultaneous thermal disproportionation of a siliceous material and GeX2 in a conventional tube furnace. Also included is a method of preparing free standing silicon germanium nanocrystals by the acid etching product of the product of the thermal disproportionation of a siliceous material and GeX2.

Abstract: Methods for preparing nanocrystalline-Si/SiO2 composites by treating hydrogen silsesquioxane (HSQ) under reductive thermal curing conditions are described. Also described are methods of preparing silicon nanoparticles by acid etching the nanocrystalline-Si/SiO2 composites.

Abstract: The present disclosure relates to a method of preparing silicon carbon nanocrystals (SiC-NCs) in a size-dependent manner by reacting a compound of the Formula I: R1Si(X1)3, with a compound of the Formula II Si(X2)4(II) under conditions for the hydrolysis and condensation of the compound of the Formula I and the compound of the Formula II to form a siloxane polymer comprising repeating units of the Formula III: —[(R1SiO1.5)x(SiO2)y]—, followed by thermal processing of the siloxane polymer under conditions to form SiC-NC's. Optionally the SiC-NC's are liberated to provide free standing SiC-NC's.

Abstract: The present disclosure relates to a method of preparing silicon carbon nanocrystals (SiC-NCs) in a size-dependent manner by reacting a compound of the Formula I: R1Si(X1)3, with a compound of the Formula II Si(X2)4(II) under conditions for the hydrolysis and condensation of the compound of the Formula I and the compound of the Formula II to form a siloxane polymer comprising repeating units of the Formula III: —[(R1SiO1.5)x(SiO2)y]—, followed by thermal processing of the siloxane polymer under conditions to form SiC-NC's. Optionally the SiC-NC's are liberated to provide free standing SiC-NC's.

Abstract: Novel aromatic ether-containing monomers are described along with processes for their preparation and their polymerization into corresponding aromatic ether-containing polyfluorenes. These polyfluorenes exhibited stable blue-emission and therefore have application in polymer light-emitting devices.

Abstract: Methods for preparing nc-Ge/GeO2 composites by under reductive thermal processing conditions are described. Also described are methods of preparing freestanding nc-Ge via release from the nc-Ge/GeO2 composites.

Abstract: The present invention relates to a method of preparing silicon germanium alloy nanocrystals by the simultaneous thermal disproportionation of a siliceous material and GeX2 in a conventional tube furnace. Also included is a method of preparing free standing silicon germanium nanocrystals by the acid etching product of the product of the thermal disproportionation of a siliceous material and GeX2.

Abstract: Methods for preparing nanocrystalline-Si/SiO2 composites by treating hydrogen silsesquioxane (HSQ) under reductive thermal curing conditions are described. Also described are methods of preparing silicon nanoparticles by acid etching the nanocrystalline-Si/SiO2 composites.

Abstract: The present disclosure relates to method of forming organosiloxane nanofibers on substrates, in particular by contacting an activated substrate with a vapor comprising vinyltrichlorosilane. The disclosure relates to the substrates thus formed and to various uses thereof. The disclosure further relates to a general method of preparing hydrophilic siloxane nanofibers on a substrate comprising by annealing any substrate coated with organosiloxane nanofibers under conditions to remove substantially all of the organic portions of the organosiloxane nanofibers.

Abstract: A metal article is produced by: (1) providing an aluminum master substrate, the surface of which may be smooth or patterned; (2) making the aluminum master substrate cathodic, in an acid or acid salt solution which will not etch aluminum, at a current density of between about 10 to 500A/sq. ft., at solution temperatures of up to about 50.degree.C; (3) coating the surface of the aluminum master substrate with a thin metal layer and (4) dissolving the aluminum master substrate, to provide a metal foil article that is a negative duplicate of the smooth or patterned aluminum master substrate surface.