National Research Council of Canada

Other

Ballard Power Systems Corporation

Her Majesty the Queen in Right Et Al.

Jianfu Ding

Zhao Li

Patrick Roland Lucien Malenfant

Patrick Malenfant

Ye Tao

Jacques Lefebvre

Michael Day

Tyler B Norsten

Yinghua Qi

Yuning Li

Michael D Guiver

Chantal Paquet

Charles Stone

Benoit Simard

Bhavana A Deore

Jia Jiang

Steven Holdcroft

Arnold Kell

Carmen Chuy

Xiangyang Liu

Jianping Lu

Andrea Victoria Firth

Ming Zhou

Farid Bensebaa

Claire Callender

Fuyong Cheng

Jianying Ouyang

François Lapointe

Mei Li

Marie D'lorio

Naiheng Song

Pascal Vuillaume

Anne E Morrison

Chang Guo

Pascal L'Ecuyer

Futian Liu

Mike Day

Marie D'iorio

Zhao Ll

A compound of Formula (0): where Ar is one or more substituted or unsubstituted aromatic units, R is independently H, F, CN, a C-Clinear or branched aliphatic group or a C-Clinear or branched aliphatic acyl group, and n is an integer 3 or greater, is useful for sorting and dispersing carbon nanotubes (CNTs) and for producing printed electronic devices (e.g. COsensors, TFTs) in which the CNTs are functionalized with the compound.

Indigo-based polymers for use in SWCNTs electronics

The present application relates to thin film transistors having a semiconducting channel comprising a network of carbon nanotubes that are electrically coupled to a source electrode and a drain electrode and electrically insulated from, but capacitively coupled to, a gate electrode, wherein a polymeric layer encapsulates the carbon nanotubes. The polymeric layer can comprise a first monomeric unit and optionally a second monomeric unit, wherein the first monomeric unit, the second monomeric unit and the relative amounts thereof are optionally selected to provide at least one target electrical property of the thin film transistor. The present application also relates to methods for manufacturing such thin film transistors as well as a methods of selecting a polymeric layer to provide a desired threshold voltage for such thin film transistors.

Thin film transistors comprising carbon nanotube networks encapsulated by a polymeric layer and methods for the manufacture thereof

A printable molecular ink that is can be treated (e.g. dried or curable) and sintered using broad spectrum ultraviolet light is provided to produce electrically conductive traces on a low temperature substrate, for example PET. The ink includes a silver or copper carboxylate, an organic amine compound, and may include a thermal protecting agent.

UV-sinterable molecular ink and processing thereof using broad spectrum UV light

A single-walled carbon nanotube composition includes single-walled carbon nanotubes substantially enriched in semiconducting single-walled carbon nanotubes in association with a polymer having one or more oligoether side groups. The oligoether side groups render the composition dispersable in polar organic solvents, for example alkyl carbitols, permitting formulation of ink compositions containing single-walled carbon nanotubes substantially enriched in semiconducting single-walled carbon nanotubes. Such ink compositions may be readily printed using common printing methods, such as inkjet, flexography and gravure printing.

Hydrophylic semiconducting single-walled carbon nanotube inks

Processes for selectively dispersing semi-conducting single-walled carbon nanotubes (sc-SWCNTs) in a solvent. One process comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs, in which the amine partially displaces the conjugate polymer associated with the sc-SWNTs dispersed in the solvent. Another process comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs, with the proviso that the amine excludes EDTA. Also, a process for displacement of a conjugated polymer from the surface of semi-conducting single-walled carbon nanotubes (sc-SWCNTs) dispersed in a solvent, which comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs.

Method for polymer removal from single-walled carbon nanotubes

A method for modulation of yield and semiconducting (sc)-purity of single-walled carbon nanotubes (SWCNTs) in a conjugated polymer extraction (CPE) process, the method comprising addition of an n-type dopant or a p-type dopant to the CPE process, wherein: the n-type dopant has a reduction potential of between &#x2212;4.2 eV and &#x2212;3.0 eV; and the p-type dopant has a reduction potential of between &#x2212;6.0 eV and &#x2212;4.5 eV.

Doping agents for use in conjugated polymer extraction process of single walled carbon nanotubes

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).

Decomposable S-tetrazine based polymers for single walled carbon nanotube applications

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. In addition, disclosed herein is use of an s-tetrazine based polymer for purification of semiconducting single-walled carbon nanotubes (sc-SWCNTs).

Decomposable s-tetrazine based polymers for single walled carbon nanotube applications

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. Therefore, this two-step hybrid process provides sc-SWCNT materials with a super high purity, as well as both a high sc-purity (for example greater than 99%) and a high yield (up to about 20% or higher).

Process for purifying semiconducting single-walled carbon nanotubes

Compounds of Formula (I): (formula (I)) where: Xand Xare 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, NR, RC&#x2014;CRor RC&#x2550;CR, wherein Rand Rare 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. 

Fluorinated monomers, oligomers and polymers for use in organic electronic devices

Copolymers of formula (I): where each A is S, Se or C&#x2550;C; each x is an integer from 1 to 4; each R1 is independently H, F, CN or a C-Clinear 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.

Tetrazine monomers and copolymers for use in organic electronic devices

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.

Hybrid nanocomposite semiconductor material, and method of producing inorganic semiconductor therefor

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.

Thermally crosslinkable materials and multi-layered devices therefrom

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 &#x3b1;-methyl polystyrene. Such polymers are useful in proton exchange membranes.

Fluorinated comb-shaped polymers

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Ottawa, Canada

Jianfu Ding