- High performance ambipolar organic field-effect transistors based on indigo derivatives
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A bio-inspired organic semiconductor 5,5′-diphenylindigo shows excellent and well-balanced ambipolar transistor properties; its hole and electron mobilities are 0.56 and 0.95 cm2 V-1 s-1, respectively. The enhanced performance is attributed to the extended π-π overlap of the phenyl groups as well as the characteristic packing pattern that is a hybrid of the herringbone and brickwork structures. The ambipolar transistor characteristics are analyzed considering its operating regions, where a large unipolar saturated region appears due to the difference of the electron and hole threshold voltages.
- Pitayatanakul, Oratai,Higashino, Toshiki,Kadoya, Tomofumi,Tanaka, Masaki,Kojima, Hirotaka,Ashizawa, Minoru,Kawamoto, Tadashi,Matsumoto, Hidetoshi,Ishikawa, Ken,Mori, Takehiko
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- THIOINDIRUBINS
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Disclosed herein inter alia are compositions and methods for treating cancer using thioindirubin derivatives.
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Paragraph 0407; 0410-0412
(2019/03/17)
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- PHOTOPROTECTIVE COMPOSITIONS CONTAINING MALASSEZIA-DERIVED COMPOUNDS AND/OR CHEMICAL ANALOGS THEREOF
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The present invention relates to compounds, compositions, and methods for modulating skin pigmentation and treating or preventing UV-induced skin damage, erythema, aging of the skin, sunburn, and hyperpigmentation in a subject. The compounds, compositions, and methods of the present invention generally involve Malassezia-derived compounds, including malassezin and indirubin, and/or chemical analogs thereof. Other applications of the compounds and compositions disclosed herein include, but are not limited to, improving hyperpigmentation caused by a hyperpigmentation disorder, inducing melanocyte apoptosis, and modulating arylhydrocarbon receptor (AhR) activity, melanogenesis, melanin production, melanosome biogenesis, melanosome transfer, melanocyte activity, and melanin concentration.
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Paragraph 1219
(2019/11/04)
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- Araf51 with improved transglycosylation activities: One engineered biocatalyst for one specific acceptor
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A random mutagenesis of the arabinofuranosyl hydrolase Araf51 has been run in order to have access to efficient biocatalysts for the synthesis of alkyl arabinofuranosides. The mutants were selected on their ability to catalyze the transglycosylation reaction of p-nitrophenyl α-l-arabinofuranoside (pNP-Araf) used as a donor and various aliphatic alcohols as acceptors. This screening strategy underlined 5 interesting clones, each one corresponding to one acceptor. They appeared to be much more efficient in the transglycosylation reaction compared to the wild type enzyme whereas no self-condensation or hydrolysis products could be detected. Moreover, the high specificity of the mutants toward the alcohols for which they have been selected validates the screening process. Sequence analysis of the mutated enzymes revealed that, despite their location far from the active site, the mutations affect significantly the kinetics properties as well as the substrate affinity of these mutants toward the alcohol acceptors in the transglycosylation reaction.
- Pennec, Alizé,Daniellou, Richard,Loyer, Pascal,Nugier-Chauvin, Caroline,Ferrières, Vincent
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supporting information
p. 50 - 55
(2015/02/19)
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- An iodine effect in ambipolar organic field-effect transistors based on indigo derivatives
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5,5′-Diiodoindigo (4) exhibits excellent ambipolar transistor properties with hole/electron mobilities of μh/μe = 0.42/0.85 cm2 V-1 s-1. The halogen substituted indigos show decreasing tilt angles from F to I in the crystals. In addition, the iodine-iodine interaction provides extraordinarily large interchain interaction. However, the X-ray diffraction suggests that the indigo molecules are arranged approximately perpendicular to the substrate in the thin films, probably due to the extra iodine-iodine interaction. The remarkable performance is ascribed to this characteristic supramolecular interaction.
- Pitayatanakul, Oratai,Iijima, Kodai,Ashizawa, Minoru,Kawamoto, Tadashi,Matsumoto, Hidetoshi,Mori, Takehiko
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supporting information
p. 8612 - 8617
(2015/08/24)
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- Araf51 with improved transglycosylation activities: One engineered biocatalyst for one specific acceptor
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A random mutagenesis of the arabinofuranosyl hydrolase Araf51 has been run in order to have access to efficient biocatalysts for the synthesis of alkyl arabinofuranosides. The mutants were selected on their ability to catalyze the transglycosylation reaction of p-nitrophenyl α-l-arabinofuranoside (pNP-Araf) used as a donor and various aliphatic alcohols as acceptors. This screening strategy underlined 5 interesting clones, each one corresponding to one acceptor. They appeared to be much more efficient in the transglycosylation reaction compared to the wild type enzyme whereas no self-condensation or hydrolysis products could be detected. Moreover, the high specificity of the mutants toward the alcohols for which they have been selected validates the screening process. Sequence analysis of the mutated enzymes revealed that, despite their location far from the active site, the mutations affect significantly the kinetics properties as well as the substrate affinity of these mutants toward the alcohol acceptors in the transglycosylation reaction.
- Pennec, Aliz,Daniellou, Richard,Loyer, Pascal,Nugier-Chauvin, Caroline,Ferrires, Vincent
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supporting information
p. 50 - 55
(2015/02/19)
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- A novel and efficient method for the synthesis of 1 H -indol-3-yl acetates
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A catalyst-free method for the synthesis of 1H-indol-3-yl acetates from 1H-indoles is described. The reaction takes place in the presence of (diacetoxyiodo)benzene (DIB) and potassium hydroxide as the base under mild conditions (MeCN, 35°C, 1.5 h). This represents a simple and efficient new method for 1H-indol-3-yl acetate synthesis.
- Liu, Kexin,Wen, Ping,Liu, Jin,Huang, Guosheng
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experimental part
p. 3623 - 3626
(2010/12/20)
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