85 results about "Donor group" patented technology

The subject invention pertains to metal organic frameworks (MOF) having zeolite-net-like topology, their methods of use, and their modes of synthesis. The ZMOFs are produced by combining predesigned tetrahedral building, generated in situ using heterochelation, with polyfunctional ligands that have the commensurate angle and the required donor groups for the chelation. Each molecular building block is contrasted of a single metal ion and ligands with both heterochelation functionality and bridging functionality. Advantageously, zeolite-net-like MOFs of the subject invention are porous and contain large functional cavities, which is useful for encapsulating large molecules.

An organic dye used in a dye-sensitized solar cell is described, having general formula (1):

D-Sp1-Ch-Sp2-Acc-Y  (1)

wherein the groups D, Ch, Acc and Y are conjugate with each other, the group D is a donor group, the group Ch is a chromophore rendering low HOMO-LUMO gap or a polyaromatic chromophore, the group Acc is an acceptor group, the group Y is an anchoring group, and each of Sp1 and Sp2 represents a single bond or a spacer group allowing conjugation between the groups D and Ch or between the groups Ch and Acc.

The present invention relates to multifunctional steroid compounds combining a steroid component with SOD mimic component and optionally also with NO donor component, and to their use in treating and preventing disorders associated with oxidative stress and free radical injury, or disorders in which treatment with steroids is indicated, whereas such combination increases the efficacy of treatment and reduces side effects associated with steroid treatment. The invention further relates to methods and devices for administering the compounds.

An absorbent dressing is described which comprises a crosslinked hydrophilic gel absorbent layer comprising a first component polymer comprising a plurality of polymerized monomer units having pendent hydrophilic groups, and pendent Michael donor groups; and a crosslinking agent comprising at least two Michael acceptor groups.

A method for catalytic polymerization of alpha-olefin monomers using an ultra-high activity non-metallocene pre-catalyst featuring an amine bis(phenolate) ligand-metal chelate, having general formulas of [{(O)1R1R2R3R4(C6)1(CH2)1(RnY-T)N(CH2)2(C6)2R5R6R7R8(O)2}MX1X2] and [{(O)1R1R2R3R4(C6)1(CH2)1(RnY-T)N(CH2)2(C6)2R5R6R7R8(O)2}MX3], where, M, O, and N, are metal, oxygen, and, nitrogen; X1, X2, and X3, are ligands bonded to M; R1 through R8 are radicals; (RnY-T) is an optional non-donor or donor group bonded to N. The relatively stable and simply synthesized pre-catalyst is activated by a co-catalyst under mild reaction conditions, producing exceptionally reactive polymerization of a wide variety of alpha-olefin monomers, and forming a variety of poly(alpha-olefin) products, having high molecular weight and low molecular weight distribution (PDIs close to 1). Living polymerization is performed at or above room temperature, along with achieving block co-polymerization of alpha-olefin monomers at room temperature, and producing polymers and oligomers having a wide range of molecular weights. The catalyst formed during reaction remains "alive' for as long as 31 hours, for producing a polymer with a molecular weight as high as 450,000 grams/mole.

Fluorophore compounds and methods for their use are disclosed. The fluorophores contain a 2-dicyanomethylen-3-cyano-2,5-dihydrofuran (DCDHF) moiety and one or more donor groups conjugated to the 2-dicyanomethylen-3-cyano-2,5-dihydrofuran group. The donor groups can contain atoms with free electron pairs such as oxygen, sulfur, nitrogen, or phosphorous. The fluorophore compounds can be used to label and detect biological molecules and biological structures either in vivo or in vitro.

The invention discloses a derivative with electroluminescent and electrochromic characteristics and a complex thereof. Specifically, a series of mono-branched and poly-branched structures are obtained by taking 4-phenyl terpyridyl as a terminal group and connecting electron-attracting groups (such as nitro, aldehyde group and carboxyl group) or push donor groups (such as hydroxyl, a diphenylamine derivative and a triphenylamine derivative). A general formula is shown in the specifications. The triple pyridine derivative disclosed by the invention has superior light stability, superior thermal stability and remarkable electroluminescent characteristic; a metal complex of the derivative has remarkable triplet luminous characteristic, and can be applied to an OLED (Organic Light Emitting Diode) luminous material; and more importantly, the metal complex has superior electrochromic characteristic, and is suitable to be taken as a smart off-color material.

The present invention provides crosslinkable compositions useful in the preparation of hydrophilic gels, and are prepared from polymers having pendent hydrophilic groups, and pendant Michael donor groups, and crosslinked by polyacryl Michael acceptor compounds.

The invention describes novel diuretic compounds comprising at least one heterocyclic nitric oxide donor group, or pharmaceutically acceptable salts thereof, and novel composition comprising at least one diuretic compound comprising at least one heterocyclic nitric oxide donor group, and optionally, at least one nitric oxide enhancing compound and/or at least one therapeutic agent. The invention also provides novel compositions and kits comprising at least one diuretic compound of the invention comprising at least one heterocyclic nitric oxide donor group, and optionally, at least one nitric oxide enhancing compound and/or at least one therapeutic agent. The invention also provides methods for (a) treating conditions resulting from excessive water and/or electrolyte retention; (b) treating cardiovascular diseases; (c) treating renovascular diseases; (d) treating diabetes; (e) treating diseases resulting from oxidatives stress; (f) treating endothelial dysfunctions; (g) treating diseases caused by endothelial dysfunctions; (h) treating cirrhosis; (j) treating pre-eclampsia; (k) treating osteoporosis; (l) treating nephropathy; (m) treating peripheral vascular diseases; (n) treating portal hypertension; (o) treating central nervous system disorders; and (p) treating sexual dysfunctions. The heterocyclic nitric oxide donors are preferably furoxans, sydnonimines, oxatriazole-5-ones and/or oxatriazole-5-imines.

The invention provides di-polyindenyl thiophene derivatives and the uses of the same. The di-polyindenyl thiophene derivatives have a chemical structure of a formula (I), wherein G1, G2, G3 and G4 are substituted or unsubstituted aromatic groups having 6 to 40 carbon atoms or fatty groups having 1 to 10 carbon atoms respectively, A is an electron acceptor group, and D is an electronic donor group. The di-polyindenyl thiophene derivatives can be used in dye-sensitized solar cells and have high photoabsorption coefficient, and can be used as sensitizing dye for the dye-sensitized solar cells. Due to high superimposability of the adsorption spectra of the derivatives and the solar spectrum, the derivatives achieve high photoelectric transformation efficiency when used in the dye-sensitized solar cells.

Green to transmissive soluble electrochromic polymers are conjugated polymers having a plurality of repeating units where repeating units are a plurality of substituted dioxyheterocycle based donor groups coupled to an acceptor group. The conjugated polymer absorbs radiation within a first band of the visible spectrum and a second band of the visible spectrum when in a neutral state resulting in a green color and is transmissive when in an oxidized state. The polymers are soluble allowing processing of films and coatings from solution.

An organic thin film transistor that can control the threshold voltage and reduce leakage current includes: a gate electrode; an organic semiconductor layer insulated from the gate electrode; a source electrode and a drain electrode insulated from the gate electrode and electrically connected to the organic semiconductor layer; a gate insulating layer interposed between the gate electrode and the organic semiconductor layer; and a hole control layer that is interposed between the gate insulating layer and the organic semiconductor layer. The hole control layer includes a compound having a hole-donor group or a compound having a hole-acceptor group.

The invention relates to a donor-acceptor compound light-emitting material based on a dicyanopyrazine and dicyanobenzopyrazine derivative, and an electroluminescent device for preparation, and belongsto the technical field of organic electroluminescence. According to the present invention, the dicyanopyrazine and dicyanobenzopyrazine derivative as the good electron acceptor nucleus can be linkedto different donor groups through a Suzuki reaction or Ullmann reaction to synthesize a series of electron donor-acceptor type organic small molecule light-emitting materials, wherein the materials have characteristics of large rigid planar skeleton, good thermal stability and high TADF fluorescence quantum yield, can achieve deep red light emission and near infrared light emission, are used for preparing deep red light and near infrared electroluminescent devices, and further have characteristics of simple synthesis, high yield, easy purification and the like. According to the present invention, the electroluminescent device has one or a plurality of light-emitting layers, and at least one layer of the light-emitting layer of the electroluminescent device contains one or a plurality of the compounds of the present invention, wherein further 0.1-100.0% by mass of the compound of the present invention is doped in the main body material so as to prepare the light emitting layer.

The present invention relates to a crosslinkable composition crosslinkable by Real Michael Addition (RMA) reaction comprising a component with at least 2 activated unsaturated groups (hereafter referred to as the RMA acceptor groups) and a component with at least 2 acidic protons C-H in activated methylene or methine groups (hereafter referred to as the RMA donor groups) which components can react to form a crosslinked network. The composition comprises: f. Component(s) A having at least 2 acidic C-H donor groups in activated methylene or methine and having a pKa(A) between 10.5 and 14; g. Component(s) B having at least 2 activated unsaturated acceptor groups, wherein a molar ratio R of acceptor groups to donor groups is between 3:1 to 1:6 and which component(s) B react with component(s) A by Real Michael Addition (RMA) to form a crosslinked network; h. basic component(s) C being a salt of a basic anion X- from an acidic X-H group containing compound wherein X is N, P, O, S or C: iv. in an amount xc between 0.001 and 1 meq/(gr of components A, B, C, D), v. anion X- being a Michael Addition donor reactable with component B and vi. anion X- is characterized by a pKa(C) of the corresponding acid X-H of more than two units lower than the pKa(A) of the majority component A and being lower than 10.5; i. optional component(s) D comprising one or more acidic X'-H groups wherein X' is N, P, O, S or C: v. X' being a same or different group as group X in component C, vi. the X'- anion being a Michael Addition donor reactable with component B, vii. the pKa(D) of the X'-H group in component D being more than two units lower than pKa(A) of the majority component A and being lower than 10.5, viii. the equivalent ratio Rd/c of acidic X'-H groups in component D over basic anion X- in component C is between 1% and 5000%.

The present invention relates to multifunctional β-agonist compounds comprising a reactive oxygen species scavenger group and a nitric oxide donor, and their use for the treatment of respiratory diseases involving airway obstruction, such as asthma and chronic bronchitis. The invention further relates to methods and devices for administering the compounds.

The present invention relates to catalytic materials for hydrogenation or asymmetric hydrogenation. In particular, the invention relates to iron (II) complexes containing unsymmetrical tetradentate diphosphine (PNN′P) ligands with two different nitro gen donor groups useful for catalytic transfer hydrogenation or asymmetric transfer hydrogenation of ketones, aldehydes and imines.

The invention belongs to the fields of preparation and application sciences of organic photoelectric materials and specifically relates to a luminescent material with thermotropic delayed fluorescence, an application of the luminescent material and an electroluminescent device. The luminescent material with thermotropic delayed fluorescence, provided by the invention takes a carbazole derivative as a donor group, and a relatively small tripletenergy gap is achieved by molecular distortion, so that the reverse intersystem crossing from triplet excisions to singlet excisions is realized, and theutilization ratio of the excisions and the efficiency of the device are increased. By taking the luminescent material with thermotropic delayed fluorescence, provided by the invention, as a main luminescent material, the efficiency roll-off of the device can be reduced; and serving as an object luminescent material, the luminescent material with thermotropic delayed fluorescence is high in luminescent layer brightness, good in stability, high in luminescent efficiency and long in service life. If the luminescent material with thermotropic delayed fluorescence is used as an organic luminescentmedium, the device is reduced in efficiency roll-off, high in luminescent efficiency and long in service life.

A crosslinkable composition including a component A with at least 2 acidic protons C—H in activated methylene or methine groups (the RMA donor group), and a component B with at least 2 activated unsaturated groups (the RMA acceptor group), and a catalyst system C that contains, or is able to generate a basic catalyst capable of activating the RMA reaction between components A and B, characterised in that the cross-linkable composition further includes an X—H group containing component D that is also a Michael addition donor reactable with component B under the action of catalyst C, wherein X is N, P, O, S or wherein X is C as part of an acidic methyl (CH3) group. A component D and catalyst additive mixtures for the manufacture of RMA crosslinkable composition.

The present invention relates to a 8-hydroxyquinoline derivative containing dicyanomethylisophorous. Said invention is characterized by adopting the following steps: chemically modifying 8-hydroxyquinoline, introducing the structure containing dicyanomethylisophorone and utilizing the group capable of forming conjugated system or the group capable of introducing N atoms as donor group to form conjugated system with D-pi-A structure to form connection between two functional gruops of hydroxyquinolnie and dicyanomethylisopho-rone. The dicyan and 8-hydroxyquinoline metal complex in said compound can effectively reduce molecular LUMO track, raise electronic transmission performance of material, so that it is a n-type semiconductor material emitting red light.

Efficient near infrared fluorescent dye having a large Stokes shift and applications thereof in the fields of biological imaging and fluorescent labeling, and other fields are disclosed, and belong to the technical field of organic fluorescent dye and applications. The fluorescent dye adopts fumaronitrile as a basic receptor structure unit in the molecular structure. A donor unit having an electron-releasing ability is connected in a conjugated manner to one side through a double bond or connected in a conjugated manner to two sides through double bonds. The structure formula of the fluorescent dye is shown as follows. The fluorescent dye is novel near infrared fluorescent dye synthesized through a Heck reaction, wherein R represents a donor group. Research finds that the dye emits bright near infrared fluorescence under ultraviolet excitation, and the dye has good photobleaching resistance and a high solid quantum efficiency. The dye has the large Stokes shift, and therefore the dye can be used as a near infrared fluorescent material for the fields of biological imaging and fluorescent labeling, and other fields.

A compound has a structural formula shown as a formula (1): D-L1-Y-L2-A (1), wherein D is a substituted or unsubstituted donor group; the L1 and L2 are each independently a single bond, a substitutedor unsubstituted C6-C30 arylene group, or a substituted or unsubstituted C3-C30 heteroarylene group; the A is a substituted or unsubstituted receptor group; the Y has a structural formula shown as a formula (2) or (3); the X1 and X2 are the same or different and are independently selected from O, S or Se respectively; X3 is selected from C or Si; the R1 and R2 are respectively and independently selected from halogen, alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted C6-C30 arylamino or heteroarylamino, substituted or unsubstituted C6-C30 aryl or substituted or unsubstituted C3-C30 heteroaryl; the n1 is any integer from 0 to 5; and the n2 is any integer from 1 to 5.