129 results about "Polythiophene derivative" patented technology

The invention provides a water-soluble thiophene monomer and a water-soluble polythiophene derivative as well as preparation methods of the water-soluble thiophene monomer and the water-soluble polythiophene derivative. The preparation method of the water-soluble thiophene monomer n-(3-thiophene oxo)-alkyl-triethyl ammonium bromide (n is 2-6) comprises the following steps: reacting methanol with metal sodium in N-methylpyrrolidone, then reacting with 3-bromothiophene, and purifying so as to obtain 3-methoxythiophene; reacting 3-methoxythiophene with n-bromo-1-alkanol (n is 2-6), and purifying so as to obtain 3-(n-bromo-alkoxyl)-thiophene; and reacting 3-(n-bromo-alkoxyl)-thiophene with triethylamine in acetonitrile, and purifying so as to obtain the water-soluble thiophene monomer. According to the invention, the chloroform solution of the water-soluble thiophene monomer is polymerized in the presence of anhydrous ferric trichloride used as a catalyst so as to obtain the water-soluble polythiophene derivative. The water-soluble polythiophene derivative prepared in the invention not only retains good optical and electrical properties of polythiophene but also has water solubility, and is convenient for processing and manufacturing of organic photovoltaic devices.

A conductive polymer film having an antistatic function and an electromagnetic wave shielding function, and also having excellent optical properties such as transparency even if the film is arranged in the interior of LCD. The conductive polymer film comprises a polymer film and a conductive polymer adhered to the surface thereof, wherein the conductive polymer comprises polythiophene or polythiophene derivatives, the polymer film comprises an acetyl cellulose material or a norbornene material, a layer of the conductive polymer has a thickness of 3 μm or less, and the conductive polymer film has a visible light transmission of 78% or more and a surface resistivity of 103-1012 Ω / square.

Novel methods allowing for the simple optical and electrochemical detection of double-stranded oligonucleotides are disclosed. The methods are rapid, selective and versatile. Advantageously, they do not require any chemical reaction on the probes or on the analytes since they are based on different electrostatic interactions between cationic poly (3-alkoxy-4-methylthiophene) derivatives and single-stranded or double-stranded (hibridized) oligonucleotides.

An EL element is provided in which a conjugate polymer that has a polythiophene derivative, a polyaniline derivative, a polypyrrole derivative or a polyfuran derivative as a fundamental skeleton and is soluble in an organic solvent is oxidized in its main chain with a dopant of an electron-accepting organic molecule that does not contain an acid component, and the doped conjugate polymer is used as a material to form a hole injecting layer. The polymer, being soluble in an organic solvent, can be formed in film even on a substrate high in the water repellency; that is, it can be easily formed in film on a TFT substrate and the like indispensable for an active matrix display device. Furthermore, since a dopant that does not contain an acid component is used, influence on an organic thin film and an electrode that are in contact with the hole injecting layer can be suppressed to the minimum level.

The present invention discloses a soluble polythiophene derivative containing highly coplanar repeating units. The coplanar characteristic of the TPT (thiophene-phenylene-thiophene) units improves the degree of intramolecular conjugation and intermolecular π-π interaction. The polythiophene derivative exhibits good carrier mobility and is suitable for use in optoelectronic devices such as organic thin film transistors (OTFTs), organic light-emitting diodes (OLEDs), and organic solar cells (OSCs).

The invention belongs to the technical field of lithium ion batteries, and particularly relates to an electrode material with thermosensitive properties, and a preparation method thereof. The electrode material comprises a core formed by a lithium metal oxide, and a shell formed by a thiophene derivative, wherein the weight of the thiophene derivative accounts for 0.1-8% of the total weight of the electrode material, and the Curie temperature of the thiophene derivative is 90-130 DEG C. Compared with the prior art, the electrode material with the core-shell structure, which is formed in a manner that the lithium metal oxide is coated with the thiophene derivative, has the advantages that the thermosensitive properties are excellent, that is, each active particle has the positive temperature coefficient characteristic; and when the internal temperature of a battery adopting the electrode material rises up to the Curie temperature of the material, the resistance of the electrode material can be sharply increased, so that a conductive network among the electrode material particles is blocked, the electron transfer speed is greatly reduced, the battery can be effectively prevented from further temperature rises, and the battery safety is further improved.

The present invention relates to a new type oligothiofuran derivative and its preparation method and application. Its preparation method includes the following steps: firstly, adding the THF solutionof DOCnT into THF solution of LDA; then adding dry ice and dilute hydrochloric acid into the reaction solution, filtering to remove THF and water; adding the obtained product into 1,2-dichloroethane solution of sulfoxide chloride, and removing solvent; making the produce and octadecyl amine produce reaction in dichloromethane solution, removing solvent to obtain crude product; then using silicon gel column to make separation so as to obtain pure product. Said derivative application lies in that said derivative and solvent are mixed, heated, dissolved, cooled so as to obtain gel, said gel can implement reversible metachrosis.

According to example embodiments, a method includes dispersing carbon nanotubes in a mixed solution containing a solvent, the carbon nanotubes, and a dispersant, the carbon nanotubes including semiconducting carbon nanotubes, the dispersant comprising a polythiophene derivative including a thiophene ring and a hydrocarbon sidechain linked to the thiophene ring. The hydrocarbon sidechain includes an alkyl group containing a carbon number of 7 or greater. The hydrocarbon sidechain may be regioregularly arranged, and the semiconducting carbon nanotubes are selectively separated from the mixed solution. An electronic device includes semiconducting carbon nanotubes and the foregoing described polythiophene derivative.