99 results about "Charge-transfer complex" patented technology

An organic device has a hole current-electron current conversion layer which comprises a laminate of an electron transportation section and a hole transportation section. The electron transportation section includes a charge transfer complex formed upon an oxidation-reduction reaction between a reduced low work function metal and an electron-accepting organic compound, the reduced metal being produced upon an in-situ thermal reduction reaction caused upon contact, through lamination or mixing by co-deposition, of an organic metal complex compound or an inorganic compound containing at least one metal ion selected from ions of low work function metals having a work function of not more than 4.0 eV, and a thermally reducible metal capable of reducing a metal ion contained in the organic metal complex compound or the inorganic compound in vacuum to the corresponding metal state, and the electron transportation section having the electron-accepting organic compound in the state of radical anions. The hole transportation section includes an organic compound having an ionization potential of less than 5.7 eV and an electron-donating property and an inorganic or organic substance capable of forming a charge transfer complex upon its oxidation-reduction reaction with the organic compound, the organic compound and the inorganic or organic substance being contacted through lamination or mixing, and the electron-donating organic compound is in the state of radical cations.

An organic device, including an organic compound having charge-transporting ability (i.e., transporting holes and / or electrons) and / or including organic light emissive molecules capable of emitting at least one of fluorescent light or phosphorescent light, has a charge transfer complex-contained layer including a charge transfer complex formed upon contact of an organic hole-transporting compound and molybdenum trioxide via a manner of lamination or mixing thereof, so that the organic hole-transporting compound is in a state of radical cation (i.e., positively charged species) in the charge transfer complex-contained layer.

A radiation curable coating composition is provided and includes an effective amount of cationic photoinitiator, in combination with a charge transfer complex, the charge transfer complex comprising at least one electron withdrawing reactant component and at least one electron donating reactant component free radically reactive therewith, the electron withdrawing reactant component comprising an unsaturated nitrogen containing compound and the electron donating reactant component comprising an unsaturated compound having at least one vinyl ether group, the electron donating reactant component may be separate from or structurally incorporated within the electron withdrawing reactant component and an effective amount of a cationic photoinitiator. A photopolymerization process employing the composition is also provided.

Specific core-shell binders and magnetic additives for use in ink-jet printing ink compositions are provided. One class of specific core / shell binders has the general formula [AmBnC'p]x, where A and B are hydrophobic components in which A exhibits a glass transition temperature Tg between about -150° and +25° C. and B exhibits a glass transition temperature greater than 25° C., C' is a component that forms hydrophilic or water-soluble component in the polymer chain, and has an ionic or non-ionic structure, m<30 wt %, n>40 wt %, and p<30 wt %, with the total of m+n+p=100 wt %, and x=1 to 100,000. The molecular weight (weight average) of the polymer is between about 1,000 and 2,000,000. The polymers useful in the practice of the invention are prepared by emulsifying the monomers and then conducting a free-radical polymerization in water. The foregoing binder polymer is used in conjunction with magnetic additives comprising either (a) inorganic magnetic compound containing at least one of iron, cobalt, and nickel or (b) organic magnetic complexes containing at least one of iron, cobalt, and nickel or (c) organic charge transfer complexes that exhibit magnetic properties. The ratio of binder (I) to colorant (pigment) is greater that 1 to 10. The concentration of the magnetice additive is within the range of 1 to 30 wt %. The general ink formulation comprises: 5 to 50 wt % water-miscible solvent; 0.5 to 10 wt % colorant; 1 to 30 wt % magnetice additive; and water.

The invention discloses a colorless and transparent polyimide resin material. 1,2,3,4-cyclohexanetetracarboxylic dianhydride is chosen as dianhydride monomer or comonomer to carry out polycondensation reaction with primary diamine, so that the polyimide resin material is prepared. Because the 1,2,3,4-cyclohexanetetracarboxylic dianhydride comonomer has a distorted molecular structure, a large free volume exists between polymer molecular chains, and thereby the formation of charge transfer complex (CTC) in and between polyimide molecules is inhibited; and meanwhile, because of the introductionof a lipid structure, the electron-stimulated transition mode in the polyimide molecular chains is changed, the absorption of the aromatic polyimide in the visible light region is remarkably weakened, and thereby the transparency of the polymer is greatly increased. The ultraviolet light transmission cutoff wavelength of a produced polyimide film is 280nm to 380nm, the light transmissivity at 450nm is 86 to 94 percent, moreover, the glass-transition temperature is 250 DEG C to 400 DEG C, and the polyimide resin material has a good application prospect in the fields of flexible substrate materials for solar cells, flexible transparent conducting film substrate materials, liquid crystal display materials and the like.

The present invention provides a novel chemiluminescent reagent producing chemiluminescence in the presence of hydrogen peroxide, extent of which depends on peroxidase concentration, chemiluminescent analysis method using the same, in particular useful for detection and quantitative analysis of various types of materials by measuring peroxidase enzyme activity or enzyme immunoassay with peroxidase enzyme as the marker.More particularly, the present invention provides a chemiluminescent reagent containing, as the major ingredients, a charge-transferring complex of N,N'-disubstituted-9,9'-bisacridinium salt and N,N-disubstituted carboxylic amide compound; chemiluminescent reagent containing further containing a specific aminoalcohol compound, in addition to the above; and method for measuring peroxidase activity at a high sensitivity in the presence of a peroxide, using the above chemiluminescent reagent.Moreover, the novel chemiluminescent reagent of the present invention can enhance sensitivity of the enzyme immunoassay with peroxidase enzyme as the marker by its chemiluminescent reaction.

An organic device, including an organic compound having charge-transporting ability (i.e., transporting holes and / or electrons) and / or including organic light emissive molecules capable of emitting at least one of fluorescent light or phosphorescent light, has a charge transfer complex-contained layer including a charge transfer complex formed upon contact of an organic hole-transporting compound and molybdenum trioxide via a manner of lamination or mixing thereof, so that the organic hole-transporting compound is in a state of radical cation (i.e., positively charged species) in the charge transfer complex-contained layer.

An organic light-emitting device includes a light-emitting layer including a host, a dopant, and a hole-trapping material, wherein the hole-trapping material is provided at 0.01 to less than 5% by volume relative to the light-emitting layer volume, has an oxidation potential that is selected so that it is less than the oxidation potential of the host in order to serve as a hole trap, has an oxidation potential that is selected so as to avoid formation of a certain charge transfer complex between the hole-trapping material and the host if the charge transfer complex causes a reduction in the electroluminescent efficiency of the dopant, and has an oxidation potential that is selected so as to avoid formation of the charge transfer complex between the hole-trapping material and the dopant.

A radiation polymerisable composition comprising: (A) a donor / acceptor component for forming a charge transfer complex said component being selected from the group consisting of: (i) a bifunctional compound having an electron donor group and an electron withdrawing group and a polymerisable unsaturated group; (ii) a mixture of (a) at least one unsaturated compound having an electron donor group and a polymerisable unsaturated moiety; and (b) at least one unsaturated compound having an electron acceptor group and a polymerisable unsaturated group; and (B) a Lewis acid.

A solid, ionically conductive, non-electrically conducting polymer material with a plurality of monomers and a plurality of charge transfer complexes, wherein each charge transfer complex is positioned on a monomer.

A nonvolatile memory has a problem in that applied voltage is high. This is because a carrier needs to be injected into a floating gate through an insulating film by a tunneling effect. In addition, there is concern about deterioration of the insulating film by performing such carrier injection. An object of the present invention is to provide a memory in which applied voltage is lowered and deterioration of an insulating film is prevented. One feature is to use a layer in which an inorganic compound having a charge-transfer complex is mixed with an organic compound as a layer functioning as a floating gate of a memory. A specific example is an element having a transistor structure where a layer in which an inorganic compound having a charge-transfer complex is mixed with an organic compound and which is sandwiched between insulating layers is used as a floating gate.

The invention discloses a transparent polyimide material. The transparent polyimide material is obtained by performing condensation polymerization on a 1,4-bi(3,4-dicarboxylic phenoxy)cyclohexane dianhydride monomer and a binary primary amine monomer. Because the dianhydride monomer is in an alicyclic structure, the formation of a charge transfer complex in polyimide molecules and between molecules can be effectively suppressed, and the transparent performance of the polymer is greatly improved; and meanwhile, according to the phthalic anhydride structures at two ends, the high reactivity of the dianhydride is kept. The glass transition temperature of the polyimide film is 200 to 300 DEG C, the ultraviolet absorption cutoff wavelength is 340 to 380nm, the light transmissivity at 450nm is 70 to 90 percent, and the transparent polyimide material has good application prospect in the fields of flexible substrate materials of solar cells, flexible transparent conductive film substrate materials, liquid crystal display materials and the like. The invention also discloses a dianhydride monomer which can be used for preparing the transparent polyimide resin material.

The present invention provides an organic electroluminescent device that can keep a stable luminescent characteristic for a long period. An organic electroluminescent device includes at least an anode 2, a charge generating layer 3, a luminescent layer 4 and a cathode 5 in this order. The charge generating layer 3 has an area 3a containing an electron transporting material at the anode side, and an area 3b containing a hole transporting material and a material capable of forming a charge transfer complex with the hole transporting material by an oxidation-reduction reaction at the cathode side, the hole transporting material and the material being laminated or mixed. The hole transporting material is in a radical cation state.

The present invention provides an organic electroluminescent device that can keep a stable luminescent characteristic for a long period. An organic electroluminescent device includes at least an anode 2, a charge generating layer 3, a luminescent layer 4 and a cathode 5 in this order. The charge generating layer 3 has an area 3a containing an electron transporting material at the anode side, and an area 3b containing a hole transporting material and a material capable of forming a charge transfer complex with the hole transporting material by an oxidation-reduction reaction at the cathode side, the hole transporting material and the material being laminated or mixed. The hole transporting material is in a radical cation state.

The invention provides a polyimide film which is prepared from a polymer of a first repeating unit shown as formula I. The invention further provides two preparation methods of the polyimide film. In the preparation methods, the polyimide film is synthesized and prepared by taking diphenyl sulfide dianhydride as a dianhydride monomer and 2,2'-bis-trifluoromethyl-4,4'-diamino biphenyl as a diamine monomer, wherein the diphenyl sulfide dianhydride is relatively weak in electronegativity of a thioether bond and relatively weak in electron absorbance and can bend a main chain of the polymer, so that the diphenyl sulfide dianhydride has the function of reducing formation of a charge transfer complex in a polyimide molecule; a trifluoromethyl substituent is introduced at a 2,2'-position of the 2,2'-bis-trifluoromethyl-4,4'-diamino biphenyl to generate a non-coplanar structure, so that a conjugated unit can be weakened. The two monomers are easy to synthesize and relatively low in cost, so that the polyimide film is relatively high in visible light transmittance, excellent in thermal and mechanical properties and low in production cost.

The invention is concerned with the low cost high efficient organic field effect transistor and it's making method, which belongs to the organic field effect transistor technique, with the source-drain electrode structure made from low work content material such as silver or copper, that forms the organic charge transfer complex salt layer on the surface of the organic semiconductor and the source-drain electrode. The making method includes: disposing the grid electrode and the isolating layer, and disposing the source-drain electrode on the isolating layer; decorating the source-drain electrode to cover the surface with the organic charge transfer complex salt layer; the last, disposing the organic semiconductor material on the complex salt layer. The invention insures the connection between the under metal electrode and the semiconductor for the efficient charge carrier injection.

The invention relates to an electrode for oxygen reduction comprising a porous organic material and at least one inherently conducting polymer such as a charge transfer complex or a conductive polymer, optionally combined with a non-conducting polymer. A current conductor may be located intermediate the porous organic material and the inherently conductive polymer. The electrode is suitable for use with an ion-conducting membrane and fuel such as hydrogen, an alcohol or borohydride to form a fuel-cell. The electrode is also suitable for use with an anode, such as a reactive metal and an electrolyte to form a battery.

The invention provides an alkaline phosphatase activity assay method with high-efficiency signal amplifying function based on in-situ formation of optical active nanometer material mimic enzyme. Hydrolysate products of ALP like catechol or salicylic acid can be combined to the surface of TiO2 nanometer material specially to form charge transfer complex, so that the TiO2 nanometer material can express efficient mimic enzymatic activity under irradiation of visible light. Compared with conventional nanometer mimic enzyme, the optical active mimic enzyme is generated in situ by catalytic reaction of natural enzyme and has excellent biocompatibility without high-concentration H2O2 during use. The optical active nanometer mimic enzyme generated in situ by catalytic reaction of alkaline phosphatase can generate high-efficiency signal amplifying function for activity assay of alkaline phosphatase, so that detection limit of ALP activity is up to 0.01 U / L. The alkaline phosphatase activity assay method has the advantages of simplicity, flexibility and fastness.

The invention belongs to the technical field of functional polymer materials, and particularly relates to a high-transparent low-expansion polyimide film for flexible display and a preparation methodof the high-transparent low-expansion polyimide film. The high-transparent low-expansion polyimide film for flexible display is prepared from a beta-lithium nepheline inorganic nanometer filler with anegative expansion coefficient adding into a polyimide matrix through an in-situ polymerization method, addition of the beta-lithium nepheline inorganic nanometer filler increases the glass-transition temperature, and meanwhile, can reduce a thermal expansion coefficient; the polyimide matrix is obtained by a polycondensation reaction of 1,4-bis(3,4-dicarboxylic acid-5-trifluoromethyl acylamino benzene)cyclohexane dianhydride and aromatic diamine monomers, since dianhydride monomers simultaneously have fluorine-contained groups and alicyclic structures, formation of intermolecular and intramolecular charge transfer complexes can be effectively inhibited, the transparency of polymers is greatly improved, and meanwhile, contained acylamino can also lower a thermal expansion coefficient of polyimide; and according to the preparation method of the high-transparent low-expansion polyimide film, the production cost is low, and film forming performance is good.

The invention relates to a method for preparing a diamine monomer with an azo-pyrimidine structure and a method for preparing a polyimide polymer by adopting the diamine monomer with the azo-pyrimidine structure. The preparation method comprises the following steps: carrying out a coupling reaction on 4-substituted aniline and sodium phenate to obtain 4-hydroxy-4'-substituted azobenzene; and carrying out nucleophilic substitution on the 4-hydroxy-4'-substituted azobenzene and dibromoalkane to generate bromo-azobenzene, and reacting the bromo-azobenzene with 4,6-diamido-2-mercaptopyrimidine to obtain the diamine monomer; and carrying out condensation polymerization on the diamine monomer with dianhydride to obtain polyimide. The pyrimidine structure is introduced into the diamine monomer, so that the charge transfer complex effect of aromatic rings of polyimide is reduced, and the glass transition temperature of the polyimide is reduced; and the azo group has photo-induced anisotropy, and an azo unit is introduced into the polyimide by alkyl chains having different lengths, so that the heterogeneous degree of the azo group can be effectively regulated, and the application of the polyimide in alignment films and other optical fields can be improved to a great extent.

The switching element has a switching layer between a first electrode layer and a second electrode layer. The switching layer includes a charge transfer complex containing an electron donor and an electron acceptor. An insulating layer is provided between the first electrode layer and the switching layer, and contacts the switching layer. The switching layer switches from a high-resistance state to a low-resistance state upon application of a voltage greater than a first threshold value in a first bias direction. Thereafter, the switching layer maintains the low-resistance state when the applied voltage decreases beyond the first threshold value. When the applied voltage becomes not smaller than a second threshold value in a second bias direction or a reverse direction to the first bias direction, the switching layer switches from the low-resistance state to the high-resistance state. Thereafter, the switching layer maintains the high-resistance state when the applied voltage decreases beyond the second threshold value.

The invention discloses a chelating adsorbent for blood purification and a preparation method for the chelating adsorbent. The adsorbent comprises a macromolecular carrier which is grafted with a copolymer of maleic anhydride and styrene, vinyl acetate or vinyl pyrrolidone. According to an adsorbing material, a charge transfer complex can be formed by virtue of maleic anhydride and vinyl monomers and is grafted with a copolymer of maleic anhydride, so that the grafting amount of maleic anhydride is improved to a great extent; after the adsorbing material is hydrolyzed, the hydrophilicity of the adsorbing material can be improved so as to improve the blood compatibility. The maleic anhydride obtained by hydrolysis can be chelated with heavy metal ions in blood to form a relatively stable seven-membered ring structure, so that the selective absorption capacity on the heavy metal ions is improved, and therefore, other electrolyte cations are not greatly influenced while the heavy metal ions are removed from blood.

The switching element has a switching layer between a first electrode layer and a second electrode layer. The switching layer includes a charge transfer complex containing an electron donor and an electron acceptor. An insulating layer is provided between the first electrode layer and the switching layer, and contacts the switching layer. The switching layer switches from a high-resistance state to a low-resistance state upon application of a voltage greater than a first threshold value in a first bias direction. Thereafter, the switching layer maintains the low-resistance state when the applied voltage decreases beyond the first threshold value. When the applied voltage becomes not smaller than a second threshold value in a second bias direction or a reverse direction to the first bias direction, the switching layer switches from the low-resistance state to the high-resistance state. Thereafter, the switching layer maintains the high-resistance state when the applied voltage decreases beyond the second threshold value.

The invention discloses transparent polyimide resin which is obtained through condensation polymerization of a 1, 4-bis(2, 3-dicarboxylphenoxy)cyclohexane dianhydride monomer and a primary diamine monomer. Phthalic anhydride structures at two ends of the dianhydride monomer keep the high reaction activity of dianhydride, and an alicyclic structure with a distorted middle space structure has relatively large free volume and steric hindrance, so that the formation of charge transfer complexes in polyimide molecules and among the molecules is effectively inhibited, and the transparency and glass transition temperature of a polymer are increased. The obtained polyimide resin has the glass transition temperature of 200-300 DEG C, the ultraviolet absorption cutoff wavelength of 370-380nm and the light transmissivity at the wavelength of 450nm of 75-90%. The transparent polyimide resin has a better application prospect in the fields such as flexible substrate materials of solar cells, substrate materials of flexible transparent conducting films, liquid crystal display materials and the like. The invention also discloses a dianhydride monomer which can be used for preparing the transparent polyimide resin.

The invention provides a high-yield preparation method of small-particle-size functional polymer nanospheres. The method adopts a self-stabilization precipitation polymerization manner and is used for polymerizing a charge transfer complex system consisting electron donor monomers and electron receptor monomers to realize high-yield preparation of the small-particle-size functional polymer nanospheres; functional crosslinked polymer microspheres can be prepared by introducing crosslinking monomers into the system, the particle size of the prepared polymer microspheres can be further reduced, and the yield can be increased; small-particle-size core-shell and hollow structure functional microspheres can be further prepared with small-particle-size polymer microspheres as templates. The method has a simple synthesis route and is safe and convenient to operate, the small-particle-size functional polymer nanospheres as well as polymer nanospheres adopting core-shell and hollow structures and other special structures can be prepared with high yield, and the prepared polymer microspheres are uniform in particle size, high in functional group content and applicable to industrial production of the functional polymer nnaospheres.

The invention relates to a transparent polyimide material and a preparation method thereof. According to the preparation method, tetrafluorophthalic acid and 3,5-dinitraniline are taken as raw materials and are subjected to two-step reaction of acylation and hydrogenation to generate a diamine monomer, namely 2-(3,5-diaminodiphenyl)-4,5,6,7-(tetrafluoroisoindoline)-1,3-dione, and the diamine monomer is reacted with aromatic diamine and dianhydride to generate polyimide. By introducing fluorine atoms and strong electron withdrawing groups into the structure of diamine, the generation of charge transfer complexes (CTC) in molecules is inhibited, and the transparency of polyimide is remarkably improved; the glass-transition temperature of prepared polyimide is 300-368 DEG C, and the light transmissivity of a thin film with the thickness of 10-12 microns at 450nm is 90%-96%; the prepared transparent polyimide material has the advantages of high transparency and glass-transition temperature and good dissolubility and heat resistance and has wide application prospects in the related fields of flexible transparent substrates, panel display and the like.

A polymeric material which exhibits an optically detectable response to changes in pressure. The material includes an elastomer selected from the group of a polyurethane, a polyacrylate, and a silicone, in combination with a photochemical system. The photochemical system may be in the form of an exciplex or a fluorescence resonance energy transfer. Both photochemical systems are reversible processes. Synthesis of the elastomer and the photochemical system produce a material which forms an excited charge transfer complex when subject to an increase in pressure and a less excited charge transfer complex as pressure is lowered.