Abstract: A process for purifying semiconducting single-walled carbon nanotubes (sc-SWCNTs) extracted with a conjugated polymer, the process comprising exchanging the conjugated polymer with an s-tetrazine based polymer in a processed sc-SWCNT dispersion that comprises the conjugated polymer associated with the sc-SWCNTs. The process can be used for production of thin film transistors and chemical sensors. In addition, disclosed herein is use of an s-tetrazine based polymer for purification of semiconducting single-walled carbon nanotubes (sc-SWCNTs).

Abstract: A two-step sc-SWCNT enrichment process involves a first step based on selective dispersion and extraction of semi-conducting SWCNT using conjugated polymer followed by a second step based on an adsorptive process in which the product of the first step is exposed to an inorganic absorptive medium to selectively bind predominantly metallic SWCNTs such that what remains dispersed in solution is further enriched in semiconducting SWCNTs. The process is easily scalable for large-diameter semi-conducting single-walled carbon nanotube (sc-SWCNT) enrichment with average diameters in a range, for example, of about 0.6 to 2.2 nm. The first step produces an enriched sc-SWCNT dispersion with a moderated sc-purity (98%) at a high yield, or a high purity (99% and up) at a low yield. The second step can not only enhance the purity of the polymer enriched sc-SWCNTs with a moderate purity, but also further promote the highly purified sample to an ultra-pure level.

Abstract: Compounds of Formula (I): (formula (I)) where: X1 and X2 are the same or different and each is independently Cl, Br, I, a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; and, Y is O, S, Se, NR1, R1C—CR2 or R1C?CR2, wherein R1 and R2 are the same or different and are each independently H or an organic group, are useful as monomers to produce oligomers or polymers that are useful in organic electronic devices.

Abstract: Copolymers of formula (I): where each A is S, Se or C?C; each x is an integer from 1 to 4; each R1 is independently H, F, CN or a C1-C20 linear or branched aliphatic group; Ar is one or more substituted or unsubstituted aromatic units; and, n is an integer 5 or greater, can be formed into films or membranes that are useful as active layers in organic electronic device, such as PV solar cells, providing high power conversion efficiencies and good thermal stability. Such copolymers may be synthesized from monomers of formula (II): by Stille or Suzuki coupling reactions. Such monomers may be synthesized by a variation of the Pinner synthesis.

Abstract: Compounds of Formula (I): (formula (I)) where: X1 and X2 are the same or different and each is independently Cl, Br, I, a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; and, Y is O, S, Se, NR1, R1C—CR2 or R1C?CR2, wherein R1 and R2 are the same or different and are each independently H or an organic group, are useful as monomers to produce oligomers or polymers that are useful in organic electronic devices.

Abstract: Copolymers of formula (I): where each A is S, Se or C?C; each x is an integer from 1 to 4; each R1 is independently H, F, CN or a C1-C20 linear or branched aliphatic group; Ar is one or more substituted or unsubstituted aromatic units; and, n is an integer 5 or greater, can be formed into films or membranes that are useful as active layers in organic electronic device, such as PV solar cells, providing high power conversion efficiencies and good thermal stability. Such copolymers may be synthesized from monomers of formula (II): by Stille or Suzuki coupling reactions. Such monomers may be synthesized by a variation of the Pinner synthesis.

Abstract: Hybrid semiconductor materials have an inorganic semiconductor incorporated into a hole-conductive fluorene copolymer film. Nanometer-sized particles of the inorganic semiconductor may be prepared by mixing inorganic semiconductor precursors with a steric-hindering coordinating solvent and heating the mixture with microwaves to a temperature below the boiling point of the solvent.

Abstract: The invention disclosed relates to cross-linkable composites of boronic acid or a boronic acid derivative such as a boronate, and an organic or organo-metallic moiety having a functionality such as hole transporting, electron transporting and light emitting, to cross-linked composites and to methods for making same. Multi-layer materials and optoelectronic devices including such cross-linked composites are also disclosed.

Abstract: Hybrid semiconductor materials have an inorganic semiconductor incorporated into a hole-conductive fluorene copolymer film. Nanometer-sized particles of the inorganic semiconductor may be prepared by mixing inorganic semiconductor precursors with a steric-hindering coordinating solvent and heating the mixture with microwaves to a temperature below the boiling point of the solvent.

Abstract: Fluorinated comb co-polymers have a main chain including a semi-rigid hydrophobic fluorinated poly(ether) backbone and comb segments in the form of flexible and monodisperse side chains that are more hydrophilic than the backbone. The side chains may be hydrophilic polymeric chains obtained from “living-type” polymerization, for example polymethacrylates, polyethylene oxides, polystyrenes. Hydrophilic functionality, for example, ionic groups may be selectively introduced onto the side chain post polymerization. The side chain may be sulfonated ?-methyl polystyrene. Such polymers are useful in proton exchange membranes.

Abstract: The invention relates to compounds of formula I: x+y+z=1 and x=0 to 1, y=0 to 1, z=0 to 1 and R is CH3 or CF3 and R1 and R2 each represent H or a functional group. These compounds show promise in films and as optical waveguide materials as well as bimodal interference coupler and arrayed waveguide grating demultiplexer materials.

Abstract: Fluorinated comb co-polymers have a main chain including a semi-rigid hydrophobic fluorinated poly(ether) backbone and comb segments in the form of flexible and monodisperse side chains that are more hydrophilic than the backbone. The side chains may be hydrophilic polymeric chains obtained from “living-type” polymerization, for example polymethacrylates, polyethylene oxides, polystyrenes. Hydrophilic functionality, for example, ionic groups may be selectively introduced onto the side chain post polymerization. The side chain may be sulfonated ?-methyl polystyrene. Such polymers are useful in proton exchange membranes.

Abstract: The invention disclosed relates to cross-linkable composites of boronic acid or a boronic acid derivative such as a boronate, and an organic or organo-metallic moiety having a functionality such as hole transporting, electron transporting and light emitting, to cross-linked composites and to methods for making same. Multi-layer materials and optoelectronic devices including such cross-linked composites are also disclosed.

Abstract: A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit: wherein n provides a molecular weight up to about 30,000 to 100,000, X represents one of following groups: none, ketone, sulfone, sulfide, ether, hexafluoroisopropylidene, ??-perfluoroalkylene, oxadiazole, and Y is 4,4?-(hexafluoroisopropylidene)-diphenyl, 4,4?-isopropylidene diphenyl, 3,3?-isopropylidene diphenyl, phenyl, or chlorinated phenol which process comprises reacting a bis(pentafluorophenyl) compound and a bisphenol or hydroquinone in the presence of a dehydrating agent and a polar aprotic solvent is disclosed. Polymers resulting from the process show good promise as new passive optic polymer waveguide materials.

Abstract: The invention relates to compounds of formula I: x+y+z=1 and x=0 to 1, y=0 to 1, z=0 to 1 and R is CH3 or CF3 and R1 and R2 each represent H or a functional group. These compounds show promise in films and as optical waveguide materials as well as bimodal interference coupler and arrayed waveguide grating demultiplexer materials.

Abstract: A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit: 1

Abstract: Ion-exchange materials comprising a polymeric backbone and a plurality of pendent styrenic or fluoridated styrenic macromonomers covalently bonded thereto, wherein the plurality of pendent styrenic or fluorinated styrenic macromonomers comprise a uniform number of styrenic or fluoridated styrenic monomer repeat units, and wherein predominantly all of the styrenic or fluoridated styrenic monomer repeat units have at least one charged group. Processes for making such material, as well as products related thereto, are also disclosed. In a representative embodiment, the ion-exchange material is utilized as a proton-exchange membrane (PEM) for use in a PEM fuel cell.

Abstract: Ion-exchange materials comprising a polymeric backbone and a plurality of pendent styrenic or fluorinated styrenic macromonomers covalently bonded thereto, wherein the plurality of pendent styrenic or fluorinated styrenic macromonomers comprise a uniform number of styrenic or fluorinated styrenic monomer repeat units, and wherein predominantly all of the styrenic or fluorinated styrenic monomer repeat units have at least one charged group. Processes for making such materials, as well as products related thereto, are also disclosed. In a representative embodiment, the ion-exchange material is utilized as a proton-exchange membrane (PEM) for use in a PEM fuel cell.