公开(公告)号：US20230271838A1

公开(公告)日：2023-08-31

申请号：US18112751

申请日：2023-02-22

申请人： NATIONAL RESEARCH COUNCIL OF CANADA

发明人： Jianfu DING ,  Zhao LI ,  Chang GUO ,  Francois LAPOINTE ,  Jianying OUYANG ,  Patrick Roland Lucien MALENFANT

IPC分类号： C01B32/174 ,  B82Y30/00 ,  B82Y40/00 ,  G01N27/30

CPC分类号： C01B32/174 ,  B82Y30/00 ,  B82Y40/00 ,  G01N27/308 ,  C01B2202/02

摘要： A composite material suitable for use in sensing and catalysis applications with conjugated polymers non-covalently bound to the carbon nanotubes. The conjugated polymers have alternating aromatic (Ar) units and bipyridine (BPy) units. Metal nanoparticles having a size that is between about 0.3 nm and about 5 nm are bound to the conjugated polymers at respective BPy units, thereby anchoring the metal nanoparticles to the carbon nanotubes. Thus, a metal salt solution was added into the polymer/carbon nanotube solution to form a metal-BPy complex, which is in situ photo reduced to metal nanoparticles. Therefore, the formed nanoparticles are tightly anchored to the nanotube and can be self-regenerated by room light to offer the material a high performance and durability.

公开(公告)号：US20210293734A1

公开(公告)日：2021-09-23

申请号：US17267184

申请日：2019-08-13

申请人： National Research Council of Canada

发明人： Chang GUO ,  Jianying OUYANG ,  Zhao LI ,  Jianfu DING ,  Patrick Roland Lucien MALENFANT

IPC分类号： G01N27/12 ,  C08G61/12 ,  C01B32/174 ,  C01B32/172

摘要： A compound of Formula (0): where Ar is one or more substituted or unsubstituted aromatic units, R is independently H, F, CN, a C1-C20 linear or branched aliphatic group or a C1-C20 linear 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. CO2 sensors, TFTs) in which the CNTs are functionalized with the compound.

公开(公告)号：US20240341108A1

公开(公告)日：2024-10-10

申请号：US18293522

申请日：2022-08-08

申请人： National Research Council of Canada

发明人： Zhao LI ,  Jianying OUYANG ,  Jianfu DING ,  Patrick R. L. MALENFANT

IPC分类号： H10K30/65 ,  H10K30/80 ,  H10K71/13 ,  H10K71/40 ,  H10K85/20 ,  H10K101/30 ,  H10K101/40

CPC分类号： H10K30/65 ,  H10K30/865 ,  H10K71/13 ,  H10K71/40 ,  H10K85/211 ,  H10K85/221 ,  H10K2101/30 ,  H10K2101/40

摘要： A composition for use in a photo-active device has: a charge transfer network of single walled carbon nanotubes (SWCNT) having at least 95 wt % of semiconducting single walled carbon nanotubes (sc-SWCNT) based on total weight of the SWCNT, the sc-SWCNT containing at least 30 wt % of one chiral type of sc-SWCNT based on total weight of the sc-SWCNT; and, a solution processible electron trapping material of a fullerene compound, the electron trapping material in contact with the charge transfer network of SWCNT. The composition is readily prepared from solution processible components and is highly sensitive in a narrow wavelength band. The composition is particularly useful in photoconductors and phototransistors that operate on the infrared region of the electromagnetic spectrum.

公开(公告)号：US20150203752A1

公开(公告)日：2015-07-23

申请号：US14560383

申请日：2014-12-04

申请人： National Research Council of Canada

发明人： Kui YU ,  Jianying OUYANG

IPC分类号： C09K11/88 ,  C09K11/56 ,  C09K11/70

CPC分类号： C09K11/883 ,  B82Y30/00 ,  C09K11/565 ,  C09K11/70 ,  C30B7/14 ,  C30B29/46 ,  C30B29/48

摘要： A method of synthesizing colloidal semiconductor nanocrystals involves contacting a source of at least one semiconductor cation element (Group 11-14, more preferably Group 12-14, more preferably 12 or 14, more preferably Cd, Zn, Hg or Pb, most preferably Cd) with a source of at least one Group 15, or 16 element in the presence of a ligand forming compound containing a carboxylic acid moiety in a reaction medium comprising a solvent that is substantially noncoordinating with respect to the at least one cation, the ligand forming compound and the source of at least one cation element having a molar ratio of 1:1 or less. The cation element source is preferably bonded to two low carbon acids. Some of the low carbon acids are substituted with the ligand forming compound to produce a cation precursor that is more soluble in the noncoordinating solvent. The method produces novel ensembles of colloidal semiconductor nanocrystals that have narrow linewidth absorption and bandgap photoluminescence spectra indicating that the colloidal semiconductor nanocrystals are of substantially a single size. The single size families are produced for CdSe, CdTe, CdS, CdSeTe, and CdP.

摘要翻译： 合成胶态半导体纳米晶体的方法包括使至少一种半导体阳离子元素（第11-14族，更优选第12-14族，更优选12或14，更优选Cd，Zn，Hg或Pb，最优选Cd ），在包含相对于至少一个阳离子基本上不配位的溶剂的反应介质中，在含有羧酸部分的配体形成化合物的存在下，具有至少一个第15族或16族元素的源，所述配体形成 化合物和至少一种摩尔比为1:1或更低的阳离子元素的来源。 阳离子元素源优选与两个低碳酸键合。 一些低碳酸被形成配体的化合物取代，以产生更易溶于非配位溶剂的阳离子前体。 该方法产生具有窄线宽吸收和带隙光致发光光谱的胶体半导体纳米晶体的新颖集合，表明胶体半导体纳米晶体基本上是单一尺寸。 单个尺寸的系列产品用于CdSe，CdTe，CdS，CdSeTe和CdP。