Macromolecular System With Low Molecular Weight (e.g., Cyanine Dyes, Coumarine Dyes, Tetrathiafulvalene) (epo) Patents (Class 257/E51.047)
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Patent number: 8586975Abstract: A photoelectric conversion element includes a first electrode, a second electrode, and a photoelectric conversion element provided between the first electrode and the second electrode. The photoelectric conversion element includes a polymer. The polymer includes at least one light absorber which absorbs light and generates at least one kind of carrier. An end part of the polymer combines with a surface, which faces the second electrode, of the first electrode.Type: GrantFiled: January 27, 2012Date of Patent: November 19, 2013Assignee: Seiko Epson CorporationInventor: Takashi Miyazawa
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Patent number: 8587192Abstract: An organic electroluminescence device includes: a cathode; an anode; and a single-layered or multilayered organic thin-film layer provided between the cathode and the anode. In the organic electroluminescence device, the organic thin-film layer includes at least one emitting layer, and the at least one emitting layer contains: at least one phosphorescent material; and a host material represented by the following formula (1).Type: GrantFiled: December 7, 2011Date of Patent: November 19, 2013Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kazuki Nishimura, Toshihiro Iwakuma, Kenichi Fukuoka, Chishio Hosokawa, Masahiro Kawamura, Mitsunori Ito, Yoriyuki Takashima, Toshinari Ogiwara
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Publication number: 20130228755Abstract: An organic light-emitting diode including a buffer layer including an amine-based compound.Type: ApplicationFiled: September 28, 2012Publication date: September 5, 2013Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Se-Jin Cho, Chang-Ho Lee, Dae-Yup Shin, Young-Mok Son, Il-Soo Oh, Hee-Joo Ko, Jin-Young Yun, Bo-Ra Lee, Seok-Hwan Hwang, Young-Kook Kim, Yoon-Hyun Kwak
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Patent number: 8487527Abstract: The present invention relates to organic light emitting devices (OLEDs) comprising an electroluminescent material layer comprising a mixture of at least two materials having different electron and hole transport capacities, and an electron transport layer comprising a triazine. Display devices comprising the OLEDs are also disclosed.Type: GrantFiled: May 4, 2005Date of Patent: July 16, 2013Assignee: LG Display Co., Ltd.Inventors: Hany Aziz, Zoran D. Popovic, Jennifer A. Coggan, Nan-Xing Hu
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Patent number: 8455113Abstract: A light-emitting layer emits light having an emission spectrum having a primary peak in the range of wavelengths of 430 to 480 nm. The light-emitting layer contains a host compound and a dopant compound. The dopant compound has an electron affinity of 2.93 eV or more higher that is than the host compound. The dopant compound in the lowest excited triplet state has an energy of 1.95 eV or less that is lower than the host compound in the lowest excited triplet state. The dopant compound has a smaller band gap than the host compound. The dopant compound is a hydrocarbon compound.Type: GrantFiled: December 7, 2009Date of Patent: June 4, 2013Assignee: Canon Kabushiki KaishaInventors: Naoki Yamada, Jun Kamatani, Tomona Yamaguchi, Akihito Saitoh
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Patent number: 8350004Abstract: A tubular or spherical nanostructure composed of a plurality of peptides, wherein each of the plurality of peptides includes no more than 4 amino acids and whereas at least one of the 4 amino acids is an aromatic amino acid.Type: GrantFiled: November 7, 2011Date of Patent: January 8, 2013Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Meital Reches, Ehud Gazit
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Patent number: 8318323Abstract: Provided are a polycyclic compound of a compound having such a structure that two benzene rings bond to a central benzene ring each other to form a fused ring and another fused ring bonds to a terminal thereof, and an organic electroluminescence device including one or more organic thin film layers containing a light emitting layer between a cathode and an anode, in which at least one of the organic thin film layers includes the polycyclic compound of the present invention. The organic electroluminescence device has high luminous efficiency, no defect in pixels, and long lifetime. In addition, provided is a polycyclic compound realizing the organic electroluminescence device.Type: GrantFiled: September 2, 2009Date of Patent: November 27, 2012Assignee: Idemitsu Kosan Co., Ltd.Inventors: Tomoki Kato, Masaki Numata, Kazuki Nishimura, Toshihiro Iwakuma, Chishio Hosokawa, Kei Yoshida
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Patent number: 8304762Abstract: To provide an organic semiconductor of tetrathiafulvalene derivative and an organic thin-film transistor formed therefrom, the tetrathiafulvalene derivative being readily formed into a stable thin film and the organic thin-film transistor having a high mobility and being driven at a low threshold voltage, an organic semiconductor includes a hexamethylenetetrathiafulvalene compound represented by the formula (1) below, and an organic thin-film transistor having a thin film obtained therefrom (where R1 and R2 each independently denote an alkyl group which may have a C1-10 branched structure).Type: GrantFiled: August 31, 2009Date of Patent: November 6, 2012Assignees: Tokyo Institute of Technology, Nissan Chemical Industries, Ltd.Inventors: Takehiko Mori, Masato Kanno
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Patent number: 8273467Abstract: An organic electroluminescent device, which comprises: a pair of electrodes; and an organic compound layer including a light-emitting layer between the pair of electrodes, wherein the organic compound layer comprises a compound represented by formula (I): wherein Z1, Z2, Z3 and Z4 each independently represents an atom selected from the group consisting of carbon, nitrogen, sulfur and oxygen and necessary for forming an unsaturated 6-membered ring skeleton, the atom may have a hydrogen atom or a substituent; a bond in the unsaturated 6-membered ring indicates a single bond or a double bond; and R1 represents a substituent.Type: GrantFiled: February 28, 2007Date of Patent: September 25, 2012Assignee: FUJIFILM CorporationInventors: Satoshi Sano, Tatsuya Igarashi, Masaru Kinoshita
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Patent number: 8237154Abstract: Disclosed herein are a composite light-emitting material, which includes two or more light-emitting materials selected from an inorganic phosphor, a semiconductor nanocrystal and an organic dye in which the surfaces of the two or more light-emitting materials are coated; and a light-emitting device comprising the same, so as to improve the luminous efficiency and lifetime.Type: GrantFiled: January 9, 2007Date of Patent: August 7, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Eun Joo Jang, Shin Ae Jun, Jung Eun Lim
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Patent number: 8222592Abstract: The present invention provides a dye loaded zeolite material comprising: a) at least one zeolite crystal having straight through uniform channels each having a channel axis parallel to, and a channel width transverse to, a c-axis of crystal unit cells; b) closure molecules having an elongated shape and consisting of a head moiety and a tail moiety, the tail moiety having a longitudinal extension of more than a dimension of the crystal unit cells along the c-axis and the head moiety having a lateral extension that is larger than said channel width and will prevent said head moiety from penetrating into a channel; c) a channel being terminated, in generally plug-like manner, at least at one end thereof located at a surface of the zeolite crystal by a closure molecule hose tail moiety penetrates into said channel and whose head moiety substantially occludes said channel end while projecting over said surface; and d) an essentially linear arrangement of luminescent dye molecules enclosed within a terminated channType: GrantFiled: February 18, 2011Date of Patent: July 17, 2012Assignee: UniversitaetInventor: Gion Calzaferri
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Patent number: 8216697Abstract: The present invention relates to an OLED device including a cathode, an anode, and having therebetween a light-emitting layer, further including, between the cathode and the light emitting layer, a first layer containing a fluoranthene-macrocyclic compound. The fluoranthene-macrocyclic compound includes a fluoranthene nucleus having the 7,10-positions connected by a linking group. The fluoranthene nucleus can be further substituted, provided substituents in the 8- and 9-positions cannot combine to form a five-membered ring group. The OLED device includes at least one layer, between the light-emitting layer and the cathode, containing an alkali metal material. It provides improvement in features such as efficiency and drive voltage.Type: GrantFiled: February 13, 2009Date of Patent: July 10, 2012Assignee: Global Oled Technology LLCInventors: William J. Begley, Natasha Andrievsky
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Patent number: 8179035Abstract: A method for selecting two different light-emitting materials for use in an OLED device, each of which produces different color light, which combine to produce white light. Each light emitting material has its own point on a chromaticity diagram, and the light-emitting materials are selected such that, when a line is drawn between the first point and the second point, it passes through a desired white area defined on a chromaticity diagram.Type: GrantFiled: December 19, 2007Date of Patent: May 15, 2012Assignee: Global OLED Technology LLCInventors: Jeffrey P. Spindler, Tukaram K. Hatwar, Michele L. Ricks
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Patent number: 8174182Abstract: A method for selecting two different light-emitting materials for use in an OLED device, each of which produces different color light, which combine to produce white light. Each light emitting material has its own point on a chromaticity diagram, and the light-emitting materials are selected such that, when a line is drawn between the first point and the second point, it passes through a desired white area defined on a chromaticity diagram.Type: GrantFiled: November 17, 2004Date of Patent: May 8, 2012Assignee: Global OLED Technology LLCInventors: Jeffrey P. Spindler, Tukaram K. Hatwar, Michele L. Ricks
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Patent number: 8129713Abstract: A photoelectric conversion element includes a first electrode, a second electrode, and a photoelectric conversion element provided between the first electrode and the second electrode. The photoelectric conversion element includes a polymer. The polymer includes at least one light absorber which absorbs light and generates at least one kind of carrier. An end part of the polymer combines with a surface, which faces the second electrode, of the first electrode.Type: GrantFiled: January 19, 2007Date of Patent: March 6, 2012Assignee: Seiko Epson CorporationInventor: Takashi Miyazawa
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Patent number: 8026662Abstract: It is an object to provide an organic light-emitting element having two or more light-emitting layers, wherein degradation of each constituent material for the light-emitting layer is reduced to improve reliability of the element. The present invention provides an organic light-emitting element having a laminated structure with a first mixed light-emitting layer 4 composed of a hole transport material, an electron transport material and a dopant which determines a color of an emitted light, and a second mixed light-emitting layer 5 composed of a hole transport material, an electron transport material and a dopant which determines a color of an emitted light, and also provides an image display device which uses the organic light-emitting element.Type: GrantFiled: February 14, 2005Date of Patent: September 27, 2011Assignee: Hitachi Displays, Ltd.Inventors: Shingo Ishihara, Sukekazu Aratani, Masaya Adachi, Takayuki Ouchi
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Publication number: 20110210320Abstract: The present invention relates to an anthracene derivative and an organic electroluminescent device using the same. More specifically, the present invention relates to: a novel compound which has a core (for example, an indenoanthracene core) where both an anthracene moiety with excellent device characteristics and a fluorene moiety with excellent fluorescent properties are fused, wherein substituents (for example, a heterocyclic group such as a benzimidazole group, a benzothiazole group, a benzoxazole group, a pyridinyl group or a bipyridinyl group) with an electron transfer capacity are substituted to the core; and an organic electroluminescence element which has improved luminous efficiency, brightness, thermal stability, driving voltage, and lifetime, by comprising an organic layer which is positioned between a positive electrode and negative electrode and contains the novel compound.Type: ApplicationFiled: September 1, 2009Publication date: September 1, 2011Applicant: DOOSAN CORPORATIONInventors: Chang-Ju Shin, Tae-Hyung Kim, Kyoung-Soo Kim, Jung-Sub Lee
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Patent number: 7998363Abstract: Provided are a light emitting layer including molten salt and an organic electroluminescent device comprising the light emitting layer. When the organic electroluminescent device is operated, a field induction charge separation layer is formed in the light emitting layer including the molten salt and thus, carrier injection is improved, thereby providing a light emitting layer having improved light emitting efficiency. An organic electroluminescent device including the light emitting layer has low operating voltage and long lifespan.Type: GrantFiled: November 20, 2006Date of Patent: August 16, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventors: Jong-Jin Park, Tae-Yong Noh
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Patent number: 7990046Abstract: A material for electroluminescent devices which comprises a compound in which a heterocyclic group having nitrogen is bonded to carbazolyl group and an organic electroluminescent device having at least one organic thin film layer which is sandwiched between the cathode and the anode and contains the above material in at least one layer, are provided. The material can provide organic electroluminescent devices emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.Type: GrantFiled: March 13, 2003Date of Patent: August 2, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiro Iwakuma, Chishio Hosokawa, Hidetsugu Ikeda, Seiji Tomita, Takashi Arakane
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Patent number: 7989812Abstract: To provide a high throughput film deposition means for film depositing an organic EL material made of polymer accurately and without any positional shift. A pixel portion is divided into a plurality of pixel rows by a bank, and a head portion of a thin film deposition apparatus is scanned along a pixel row to thereby simultaneously apply a red light emitting layer application liquid, a green light emitting layer application liquid, and a blue light emitting layer application liquid in stripe shapes. Heat treatment is then performed to thereby form light emitting layers luminescing each of the colors red, green, and blue.Type: GrantFiled: April 5, 2006Date of Patent: August 2, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Kunitaka Yamamoto, Masaaki Hiroki, Takeshi Fukunaga
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Patent number: 7982391Abstract: An organic electroluminescent device comprising two electrodes and at least one organic compound layer disposed between the electrodes, wherein a luminescent layer is included in the organic compound layers, the luminescent layer includes a fluorescent compound, at least one of the organic compound layers comprises an amplifying agent, the fluorescent compound emits fluorescent light upon application of voltage, the amplifying agent is capable of amplifying a number of singlet excitons and of amplifying luminescence intensity, and an amount of the amplifying agent is such an amount that at least 51% of light components emitted by the device upon the application of voltage is fluorescent light, wherein the fluorescent compound is selected from the group consisting of a distyryl arylene derivative, an oligoarylene derivative, an nitrogen-containing aromatic heterocyclic compound, a sulfur-containing heterocyclic compound, a metal complex, an oxo-substituted heterocyclic compound, an organosilicon compound and aType: GrantFiled: December 23, 2004Date of Patent: July 19, 2011Assignee: Fujifilm CorporationInventors: Tatsuya Igarashi, Toshihiro Ise
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Patent number: 7952269Abstract: An organic light-emitting device is provided which has an optical output with a high efficiency, a high luminance and a long life and which includes a pair of electrodes including an anode and a cathode, and at least one layer comprising an organic compound provided between the pair of electrodes, wherein at least one layer having a light-emitting region of the at least one layer comprising the organic compound comprises a first compound represented by the general formula (1): and a second compound having a bandgap larger than a bandgap of the first compound.Type: GrantFiled: November 16, 2005Date of Patent: May 31, 2011Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Masataka Yashima, Akihito Saitoh, Naoki Yamada, Akihiro Senoo, Kazunori Ueno
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Patent number: 7829204Abstract: A material for organic electroluminescence device with specific structure having poor symmetry. An an organic electroluminescence device comprising a cathode, an anode and an organic thin film layer which is sandwiched between the cathode and the anode and comprises at least one layer, wherein at least one layer in the organic thin film layer contains a material for the organic electroluminescence device described above. An organic electroluminescence device with excellent efficiency of light emission, without pixel defects and which is superior in heat resistance is obtained.Type: GrantFiled: December 13, 2004Date of Patent: November 9, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiro Iwakuma, Seiji Tomita, Mitsunori Ito
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Publication number: 20100213444Abstract: To provide an organic semiconductor of tetrathiafulvalene derivative and an organic thin-film transistor formed therefrom, the tetrathiafulvalene derivative being readily formed into a stable thin film and the organic thin-film transistor having a high mobility and being driven at a low threshold voltage, an organic semiconductor includes a hexamethylenetetrathiafulvalene compound represented by the formula (1) below, and an organic thin-film transistor having a thin film obtained therefrom (where R1 and R2 each independently denote an alkyl group which may have a C1-10 branched structure).Type: ApplicationFiled: August 31, 2009Publication date: August 26, 2010Inventors: Takehiko MORI, Masato Kanno
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Patent number: 7745988Abstract: A 3,6-diphenylcarbazole compound, which has a specific formula and realizes an organic electroluminescent device having high durability and high luminous efficiency. An electroluminescent device which includes an anode; a cathode which faces the anode; and at least one layer including a luminescent layer, optionally a hole transporting layer and an electron transporting layer, which is located between the anode and the cathode, wherein the at least one layer includes the 3,6-diphenylcarbazole compound.Type: GrantFiled: September 3, 2004Date of Patent: June 29, 2010Assignee: Ricoh Company, LimitedInventors: Masaomi Sasaki, Masafumi Torii, Toshiya Sagisaka, Takashi Okada, Shinichi Kawamura, Chihaya Adachi, Yuuichiroh Kawamura, Kenji Muneuchi
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Patent number: 7714501Abstract: It is an object of the present invention to provide a light emitting element which can reduce defective operation due to crystallization of a compound. One of the light emitting elements of the present invention has a layer, which generates electrons, between a first electrode and a second electrode. The layer generating electrons includes a phenanthroline derivative represented by the general formula (1) and a metal oxide. The metal oxide shows an electron donating property to the phenanthroline derivative represented by the general formula (1). Herein, in the general formula (1), R1 to R5 individually represents an alkyl group having 1 to 4 carbon atoms or a halogen group, and further at least one of R1 to R5 represents a halogen group.Type: GrantFiled: November 21, 2005Date of Patent: May 11, 2010Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Ryoji Nomura, Daisuke Kumaki, Satoshi Seo, Hisao Ikeda, Junichiro Sakata
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Publication number: 20100025669Abstract: The invention is directed to an amine-based compound represented by Formula 1, an organic light emitting device with an organic film including the same, and a flat panel display device including the organic light emitting device.Type: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Inventors: Seok-Hwan Hwang, Yoon-Hyun Kwak, Young-Kook Kim, Jeoung-In Yi, Jong-Hyuk Lee
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Patent number: 7651789Abstract: To provide an organic electroluminescent device which suppresses crystallization of a material to be used in an organic electroluminescent device and which is good in luminous characteristics, device drive durability and storage stability, the organic electroluminescent device has at least one organic layer including a light emitting layer between a pair of electrodes, wherein the light emitting layer contains a compound represented by formula (1) defined in the specification and a light emitting material.Type: GrantFiled: February 18, 2005Date of Patent: January 26, 2010Assignee: Fujifilm CorporationInventors: Jun Ogasawara, Masayuki Mishima
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Patent number: 7649211Abstract: The present invention provides a light-emitting element including an electron-transporting layer and a hole-transporting layer between a first electrode and a second electrode; and a first layer and a second layer between the electron-transporting layer and the hole-transporting layer, wherein the first layer includes a first organic compound and an organic compound having a hole-transporting property, the second layer includes a second organic compound and an organic compound having an electron-transporting property, the first layer is formed in contact with the first electrode side of the second layer, the first organic compound and the second organic compound are the same compound, and a voltage is applied to the first electrode and the second electrode, so that both of the first organic compound and the second organic compound emit light.Type: GrantFiled: May 25, 2007Date of Patent: January 19, 2010Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Nobuharu Ohsawa
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Patent number: 7598667Abstract: Arylamine compounds having at least one spiro bond are provided to the layers of an electroluminescent device. The compounds act as hole transporting and luminescent host materials for both fluorescent and phosphorescent emission. Electroluminescent devices employing the arylamine compounds exhibit excellent luminous efficiency, heat resistance and device life.Type: GrantFiled: April 26, 2004Date of Patent: October 6, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hisayuki Kawamura, Tetsuya Inoue, Chishio Hosokawa
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Patent number: 7427445Abstract: Disclosed is a compound represented by the following formula 1 as a light emitting material: wherein each of R0, R1 and R2 is the same as defined herein. An organic light emitting device including a first electrode, an organic film having one or more layers and a second electrode, laminated successively, is also disclosed. At least one layer of the organic film includes at least one compound represented by formula 1. The organic light emitting device shows excellent characteristics in terms of light emitting efficiency, life time and thermal stability.Type: GrantFiled: November 3, 2004Date of Patent: September 23, 2008Assignee: LG Chem, Ltd.Inventors: Jae Soon Bae, Min Soo Kang
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Patent number: 7399537Abstract: The invention is to provide an organic EL device having a long life time that can reduce the driving voltage of the organic EL device, and to provide a material having a small ionization potential and exhibiting a large hole mobility by using as a layer or a zone. The organic electroluminescence device comprises a pair of electrodes and an organic light emitting layer sandwiched in the electrodes, characterized in that a hole transporting zone provided between the electrodes comprises the phenylenediamine derivative represented by the specific structural formulae, and the phenylenediamine derivative has a hole mobility of 10?4 cm2/V·s or more upon using as a layer or a zone, with the organic light emitting layer containing a charge injection auxiliary.Type: GrantFiled: August 11, 2005Date of Patent: July 15, 2008Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hisayuki Kawamura, Chishio Hosokawa
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Patent number: 7372012Abstract: The present invention provides a dye loaded zeolite material comprising: a) at least one zeolite crystal having straight through uniform channels each having a channel axis parallel to, and a channel width transverse to, a c-axis of crystal unit cells; b) closure molecules having an elongated shape and consisting of a head moiety and a tail moiety, the tail moiety having a longitudinal extension of more than a dimension of the crystal unit cells along the c-axis and the head moiety having a lateral extension that is larger than said channel width and will prevent said head moiety from penetrating into a channel; c) a channel being terminated, in generally plug-like manner, at least at one end thereof located at a surface of the zeolite crystal by a closure molecule hose tail moiety penetrates into said channel and whose head moiety substantially occludes said channel end while projecting over said surface; and d) an essentially linear arrangement of luminescent dye molecules enclosed within a terminated channType: GrantFiled: July 5, 2005Date of Patent: May 13, 2008Assignee: Universitaet BernInventor: Gion Calzaferri
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Patent number: 7288605Abstract: A method and apparatus for the removal of free, emulsified, or dissolved water from liquids of low volatility, such as oil, is shown. The liquid of low volatility is removed by contacting the fluid stream of concern with one side of a semi-permeable membrane. The membrane divides a separation chamber into a feed side into which the stream of fluid is fed, and a permeate side from which the water is removed. The permeate side of the chamber is maintained at a low partial pressure of water through presence of vacuum, or by use of a sweep gas.Type: GrantFiled: July 11, 2002Date of Patent: October 30, 2007Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Hartmut Krueger, Bert Fischer, Silvia Janietz, Armin Wedel, Juergen Wahl
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Patent number: 7271406Abstract: Compounds and compositions are provided that can be used as electron transport agents in organic electronic devices such as organic electroluminescent devices. The compounds are non-polymeric and have an aromatic core conjugated to end capping groups. The aromatic core contains a phenylene group arylene or naphthalene group arylene having a pendant heteroaryl group that includes a —C?N— unit.Type: GrantFiled: April 15, 2003Date of Patent: September 18, 2007Assignee: 3M Innovative Properties CompanyInventors: James G. Bentsen, Nicholas P. Goplen, Yingbo Li, Ralph R. Roberts
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Publication number: 20070202358Abstract: An organic electroluminescent device, which comprises: a pair of electrodes; and an organic compound layer including a light-emitting layer between the pair of electrodes, wherein the organic compound layer comprises a compound represented by formula (I): wherein Z1, Z2, Z3 and Z4 each independently represents an atom selected from the group consisting of carbon, nitrogen, sulfur and oxygen and necessary for forming an unsaturated 6-membered ring skeleton, the atom may have a hydrogen atom or a substituent; a bond in the unsaturated 6-membered ring indicates a single bond or a double bond; and R1 represents a substituent.Type: ApplicationFiled: February 28, 2007Publication date: August 30, 2007Applicant: FUJIFILM CorporationInventors: Satoshi Sano, Tatsuya Igarashi, Masaru Kinoshita
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Patent number: 7259390Abstract: There is provided a liquid crystalline material, suitable for use as an organic semiconductor material, in which, even when the charge transport distance is long, the charge transport capability is satisfactory, the charge mobility is high, and the dependence of the charge transport properties upon field strength is small. The organic semiconductor material having rodlike low-molecular weight liquid crystallinity comprises: a core structure comprising L 6 ? electron rings, M 8 ? electron rings, N 10 ? electron rings, O 12 ? electron rings, P 14 ? electron rings, Q 16 ? electron rings, R 18 ? electron rings, S 20 ? electron rings, T 22 ? electron rings, U 24 ? electron rings, and V 26 ? electron rings, wherein L, M, N, O, P, Q, R, S, T, U, and V are each an integer of 0 (zero) to 6 and L+M+N+O+P+Q+R+S+T+U+V=1 to 6; and a terminal structure attached to at least one end of the core structure, the terminal structure being capable of developing liquid crystallinity.Type: GrantFiled: February 26, 2004Date of Patent: August 21, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Jun-Ichi Hanna, Hiroaki Iino, Hiroki Maeda
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Publication number: 20070176148Abstract: Provided are a light emitting layer including molten salt and an organic electroluminescent device comprising the light emitting layer. When the organic electroluminescent device is operated, a field induction charge separation layer is formed in the light emitting layer including the molten salt and thus, carrier injection is improved, thereby providing a light emitting layer having improved light emitting efficiency. An organic electroluminescent device including the light emitting layer has low operating voltage and long lifespan.Type: ApplicationFiled: November 20, 2006Publication date: August 2, 2007Inventors: Jong-Jin Park, Tae-Yong Noh
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Patent number: 7201975Abstract: A hole injection layer, a hole transport layer, a mixture luminescent layer, a hole blocking layer, an electron injection layer and a cathode are formed on an anode. The mixture luminescent layer includes TCTA as a luminescent substance, Ir(ppy) as a substance emitting light through a triplet excited state, and DCJTB as a luminescent substance emitting the light of a spectral component in the wavelength range of red.Type: GrantFiled: December 11, 2001Date of Patent: April 10, 2007Assignee: Sanyo Electric Co., Ltd.Inventor: Hiroyuki Fujii
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Patent number: 7157155Abstract: Materials containing one or more borazine rings are employed as materials for electroluminescent devices. The compounds have molecular structures represented by the following formula: in which R1–R6 are independently a metal; a whole or part of an optionally substituted borazine ring; hydrogen; halogen; hydroxyl; optionally substituted alkyl, cycloalkyl, aryl, acyl, alkoxy, acyloxy, amino, acylamino, aralkyl, cyano, carboxyl, thio, vinyl, styryl, aminocarbonyl, carbamoyl, aryloxycarbonyl, phenoxycarbonyl, or alkoxycarbonyl, as well as recognized donor and acceptor groups. The compounds have high thermal stability as well as hole and electron mobilities.Type: GrantFiled: January 9, 2004Date of Patent: January 2, 2007Assignee: The University of Hong KongInventors: Chi-Ming Che, Iona Hiu Tung Sham
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Patent number: 7151007Abstract: The present invention relates to a process for the preparation of doped organic semiconductor materials having an increased charge carrier density and effective charge carrier mobility, by doping with a dopant, a process in which after mixing the dopant into the organic semiconductor material, hydrogen, carbon monoxide, nitrogen or hydroxyl radicals are split off and at least one electron is transferred to the semiconductor material or from the semiconductor material. The process is distinguished by the fact that an uncharged organic compound is used as dopant. Doped organic semiconductor materials are obtainable by one of the processes. The semiconductor materials are distinguished by the fact that the doped layer contains cations of at least one organic compound, the uncharged form of the organic compound being unstable in air.Type: GrantFiled: August 17, 2004Date of Patent: December 19, 2006Assignee: NovaLED GmbHInventors: Ansgar Werner, Fenghong Li, Martin Pfeiffer
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Publication number: 20060251922Abstract: An OLED includes an anode, a light-emitting layer disposed over the anode, and a first electron-injecting layer disposed over the light-emitting layer, wherein the first electron-injecting layer includes at least one organic host material having a reduction potential less than ?1.0 V vs. a Saturated Calomel Electrode and at least one dopant material capable of reducing the organic host material. The OLED also includes a second electron-injecting layer disposed in contact with the first electron-injecting layer, wherein the second electron-injecting layer includes at least one organic material having a reduction potential greater than ?1.0 V vs. a Saturated Calomel Electrode, and a cathode disposed over the second electron-injecting layer.Type: ApplicationFiled: May 6, 2005Publication date: November 9, 2006Inventors: Liang-Sheng Liao, Wojciech Slusarek, Michele Ricks, Ralph Young, Dustin Comfort
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Publication number: 20060240280Abstract: An OLED includes an anode formed over a substrate, wherein the anode is a non-oxygen-treated anode and an anode modification layer formed in direct contact with the anode, wherein the anode modification layer includes one or more organic materials, each having an electron-accepting property and a reduction potential greater than 0.0 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials provide more than 50% by mole ratio of the anode modification layer. The OLED also includes an organic electroluminescent unit formed over the anode modification layer, wherein the organic electroluminescent unit includes at least a hole-transporting layer and a light-emitting layer, and a cathode formed over the organic electroluminescent unit.Type: ApplicationFiled: April 21, 2005Publication date: October 26, 2006Inventors: Liang-Sheng Liao, Kevin Klubek, Wojciech Slusarek
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Publication number: 20060240281Abstract: An OLED includes an anode formed over a substrate and a contaminant-scavenging layer formed over the anode, wherein the contaminant-scavenging layer includes one or more organic materials but not a hexaazatriphenylene derivative, each having an electron-accepting property and a reduction potential greater than ?0.1 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials provide more than 50% by mole ratio of the contaminant-scavenging layer. The OLED also includes an organic electroluminescent unit formed over the contaminant-scavenging layer, wherein the organic electroluminescent unit includes a hole-transporting layer, a light-emitting layer, and an electron-transporting layer, and a cathode formed over the organic electroluminescent unit.Type: ApplicationFiled: April 21, 2005Publication date: October 26, 2006Inventors: Liang-Sheng Liao, Kevin Klubek, Wojciech Slusarek, Tukaram Hatwar
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Publication number: 20060049397Abstract: The present invention relates to use of an organic matrix material for producing an organic semiconductor material, characterized in that the organic matrix material is comprised at least partly of a spirobifluorene compound, and the glass transition temperature of the organic matrix material is at least 120° C. and the highest occupied molecular orbital (HOMO) of the matrix material is at a maximum energy level of 5.4 eV; and also to an organic semiconductor material and electronic component.Type: ApplicationFiled: August 3, 2005Publication date: March 9, 2006Inventors: Martin Pfeiffer, Jan Blochwitz-Nimoth, Andrea Lux, Josef Salbeck