72 results about "Luminescent Agents" patented technology

The invention relates to the field of sensors, and discloses a solid electrolyte for ammonia gas detection, an electrochemical luminescence sensor, a preparation method and a detection method, and the solid electrolyte for ammonia gas detection comprises the following raw materials: a second electrolyte, a luminescent substance, an optional first electrolyte and an optional binder. The solid electrolyte for ammonia gas detection provided by the invention can realize ppb-level NH3 selective detection with high sensitivity, wide linear response range and low detection limit at room temperature for an electrochemical luminescence sensor for detecting ammonia gas. The electrochemical luminescence sensor for detecting the ammonia gas can be used for sensing the ammonia gas through a cyclic voltammetry method and a constant potential-luminescence technology, and ppb-level high-sensitivity and high-selectivity ammonia gas detection is realized.

The driving voltage of a light-emitting device is lowered to improve the emission efficiency. The light-emitting device includes a first electrode, a second electrode, a light-emitting layer, and a first layer. The light-emitting layer is positioned between the first electrode and the second electrode. The first layer is positioned between the first electrode and the light-emitting layer. The light-emitting layer contains a light-emitting substance. The first layer contains a first organic compound. The HOMO level of the first organic compound is lower than or equal to −5.40 eV. The first organic compound provides a light-emitting device represented by General Formula (G1) below (Note that Q is O or S in General Formula (G1). One of A and B represents a group represented by General Formula (g1) above, and the other of A and B and R1 to R31 each independently represent any of H, D, an alkyl group, a cyclic saturated hydrocarbon group, an alkoxy group, a cyano group, halogen, a haloalkyl group, and an aromatic hydrocarbon group. Note that R9 and R10 may be bonded to each other to form a spirocyclic structure).

This invention relates to a fully automated rapid silicate concentration detection method, comprising: S1, establishing a standard curve based on a silicate standard solution; S2, performing fully automated rapid silicate concentration detection based on the standard curve; S1 includes: S11, preparing the standard solution; S12, performing automatic sample injection and detection; S13, signal acquisition and processing; S14, fitting the standard curve; S15, verifying and storing the standard curve; S16, performing anti-interference verification, including: adding interfering substances to the standard solution to verify the reliability of the curve; S2 includes: S21, performing range calibration using the standard solution before sample measurement, setting the photomultiplier tube's high voltage value to V1 to achieve the standard measurement range; S22, preparing reagent A (2% ammonium molybdate), reagent B (4% dilute sulfuric acid), and reagent C (basic luminescent agent) required for fully automated rapid silicate concentration detection; S23, performing fully automated rapid silicate concentration detection based on the standard curve. A corresponding fully automated rapid silicate detector is also disclosed.

Provided is a light-emitting device with high reliability. The light-emitting device includes a first electrode formed on an insulating surface, a second electrode facing the first electrode, and an EL layer between the first electrode and the second electrode, one of the first electrode and the second electrode is an anode, and the other is a cathode, the EL layer includes a light-emitting layer, a first layer, and a second layer, the first layer and the second layer are between the light-emitting layer and the cathode, the first layer is between the first electrode and the second layer, the second layer is between the first layer and the second electrode, the light-emitting layer contains a first light-emitting substance and a second light-emitting substance, the first light-emitting substance is a substance capable of converting triplet excitation energy into light emission, the second light-emitting substance is a fluorescent light-emitting substance, the light emission peak wavelength of the first light-emitting substance is shorter than the light emission peak wavelength of the second light-emitting substance, and the GSP_Slope of the second layer is greater than the GSP_Slope of the first layer.

The present invention relates to a system of at least two types of switchable capsule luminescent pigments, wherein the capsule luminescent pigments are polymer particles with a diameter of 0.1-1000 µm, each containing at least one luminescent substance and a photochemically switchable absorber, wherein a first type of capsule luminescent pigment comprises a first luminescent substance emitting in a first color in the VIS spectral range; a second type of capsule luminescent pigment comprises a second luminescent substance emitting in a second color in the VIS spectral range, wherein the first and the second color are different;and the two capsule luminescent pigments each comprise the same photochemically switchable absorber, wherein the photochemically switchable absorber has a first and a second switching state, and the absorption spectrum of the photochemically switchable absorber in the second switching state strongly overlaps with the excitation spectra of the first and the second luminescent substance. The present invention further relates to a switchable luminescent printing ink comprising a system of at least two types of switchable capsule luminescent pigments as described herein, and to a security document, preferably a banknote, with a switchable luminescent print comprising a system of at least two types of switchable capsule luminescent pigments as described herein.

A light-emitting device includes a first electrode over an insulating surface, a second electrode facing the first electrode, and an EL layer between the first electrode and the second electrode. One of the first electrode and the second electrode is an anode, and the other is a cathode. The EL layer includes a light-emitting layer, a first layer, and a second layer. The first layer and the second layer are positioned between the light-emitting layer and the cathode. The first layer is positioned between the first electrode and the second layer. The second layer is positioned between the first layer and the second electrode. The light-emitting layer includes a first light-emitting substance and a second light-emitting substance. The first light-emitting substance is a substance capable of converting triplet excitation energy into light emission. The second light-emitting substance is a fluorescent substance. An emission peak wavelength of the first light-emitting substance is shorter than an emission peak wavelength of the second light-emitting substance. A GSP_Slope of the second layer is larger than a GSP_Slope of the first layer.

A luminescent substance (1) having the empirical formula EA2-xSExSi5 -xAlxN8:RE is specified, where - EA is an element or a combination of elements selected from the group of divalent elements, - SE is an element or a combination of elements selected from the group of rare earth elements, - RE is an activator element, and - 0 ≤ x ≤ 2. Also specified is a method for producing a luminescent substance (1), and an optoelectronic component (10).

The present invention relates to a capsule luminescence pigment comprising a luminescent substance and a photochemically switchable absorber as a molecular switch, wherein the luminescent substance and the photochemically switchable absorber are dissolved and / or dispersed as separate molecules in a polymer particle, the luminescent substance has an energy transfer level relevant for luminescence, the photochemically switchable absorber has a first absorption spectrum in a first switching state and a second absorption spectrum in a second switching state, wherein the energy transfer level relevant for the luminescence of the luminescent substance falls significantly into an absorption band of the photochemically switchable absorber in the second switching state, so that significantly more intense luminescence of the luminescent substance occurs in the first switching state than in the second switching state of the photochemically switchable absorber.The present invention further relates to a switchable luminescent printing ink comprising a capsule luminescent pigment as described herein and to a security document, preferably a banknote, comprising an imprint with a first switchable luminescent printing ink as described herein.

A light-emitting device having favorable heat resistance is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the first anode and the cathode. The EL layer includes a light-emitting layer and a first layer. The first layer is positioned between the light-emitting layer and the cathode. The light-emitting layer and the first layer are in contact with each other. The light-emitting layer contains a first organic compound, a second organic compound, and a light-emitting substance. The first layer contains a third organic compound. The first organic compound and the third organic compound each have an electron-transport property. The second organic compound has a hole-transport property. The light-emitting substance emits red light. The first organic compound is represented by General Formula (G100). The third organic compound is represented by General Formula (G300).

A pneumatic vehicle tire which includes a sealant layer at least on the inner surface opposite the tread. The sealant layer has a radially inward-facing surface running in the axial direction substantially parallel to the belt package. Also provided is a process for detecting a pneumatic vehicle tire with a sealant layer and to a process for recycling a pneumatic vehicle tire with sealant. The sealant layer has at least one luminescent agent on its radially inward-facing surface. The tire is detected via the luminescent agent.

The invention discloses construction and application of a biosensor for triggering controlled release based on adjacent induced DNA strand displacement, and belongs to the technical fields of electrochemical luminescence, biological analysis and nano science. According to the invention, by integrating adjacent induced DNA strand displacement and controlled release strategies, the ultra-sensitive self-closing dual-mode biosensor taking the Au-Ag nanocluster as a luminous body is developed, and the ultra-sensitive self-closing dual-mode biosensor is used for trace detection of neuron-specific enolase. Due to the synergistic characteristic between the double metals, the Au-Ag nanocluster has high electrochemical luminescence (ECL) efficiency. Meanwhile, the reduction of S2O8 < 2-> is catalyzed by cyclic conversion between Fe < 2 + > / Mn < 3 + > and Fe < 3 + > / Mn < 4 + >, and a large amount of SO4 <-> is generated for ECL emission. The specific binding between the target antigen and the antibody can drive DNA strand displacement to open a blocked hole, so that the electrochemical probe falls off and the probe is quenched to release, the self-closing of an electrochemical signal and an ECL signal is realized, the detection sensitivity and accuracy of the sensor are effectively improved, and the sensor is suitable for immunoassay of various biomarkers.

The present invention relates to a system of at least two types of switchable capsule-luminescent pigments, wherein the capsule-luminescent pigments are polymer particles having a diameter of 0.1-1000 µm, each containing at least one luminescent substance and a photochemically switchable absorber, wherein a first type of capsule-luminescent pigment comprises a first luminescent substance emitting a first color in the VIS spectral range; a second type of capsule-luminescent pigment comprises the first luminescent substance and a second luminescent substance emitting a second color in the VIS spectral range, the first and the second colors being different from one another; and the two capsule-luminescent pigments each comprise the same photochemically switchable absorber, said photochemically switchable absorber having a first and a second switching state, wherein the absorption spectrum of said photochemically switchable absorber in the second switching state significantly overlaps the emission spectrum of the first luminescent substance. The present invention also relates to a switchable luminescent printing ink, comprising a system of at least two types of switchable capsule-luminescent pigments as described herein, and to a value document, preferably a banknote, having a switchable luminescent print that comprises a system of at least two types of switchable capsule-luminescent pigments as described herein.

The application relates to the technical field of organic photoelectric materials, in particular to a heterocyclic compound and an organic electroluminescent device thereof. The application provides a heterocyclic compound which has a higher triplet energy level than a light-emitting substance, proper HOMO and LUMO and good electron migration capacity, can improve the light-emitting efficiency of a device, reduce the driving voltage of the device and prolong the service life of the device, and is a kind of excellent OLED material.

The invention discloses an ionic elastomer photoelectric sensor based on triplet-triplet annihilation up-conversion and a preparation method of the ionic elastomer photoelectric sensor, and belongs to the technical field of functional materials and photoelectric sensing. The photosensitizer and the luminescence agent form a triplet state-triplet state annihilation up-conversion system. The preparation method comprises the following steps: respectively forming the ionic conductive phase and the optical active phase, mixing the ionic conductive phase and the optical active phase to form a homogeneous system, and curing and molding through photo-initiation polymerization. Under the optical excitation condition of a specific wave band, the ion elastomer can generate measurable electric signal output, so that conversion from an optical signal to an electric signal is realized. The flexible photoelectric sensor can be prepared by curing the material on the surface of an electrode, can work under the condition of no external bias voltage or low bias voltage, has the characteristics of good wavelength selectivity, excellent flexibility and stretchability and the like, and has an application prospect in the fields of wearable sensing and flexible electronics.

A scheme is presented for imaging a field of view (103) comprising a target (115) containing luminescent substances. A corresponding method (500) comprises setting (512-552) an analysis region (225; 260) to a portion of a luminescent image (205; 205F) surrounding a suspicious representation of the target (115) and segmenting (554-556) the analysis region (225; 260) into a detection zone (230d; 265d) of luminescent substances and a non-detection zone (230n; 265n); then displaying (558-586) the luminescent image (205; 205F) with the detection zone (230d; 265d) highlighted according to a validation indicator based on a segmentation quality. A computer program (400) for implementing the method (500) and a corresponding computer program product are also presented. Moreover, a corresponding system (100) is presented. Further presented are a surgical method, a diagnostic method and a therapeutic method based on the same scheme.

The application relates to the technical field of quantum dot materials, in particular to a high-stability quantum dot composite material and a preparation method thereof. Quantum dot microspheres are formed by coating Ag-In-Zn-S quantum dots with silica to form core-shell structure microspheres, then the quantum dot microspheres, polydimethylsiloxane and silica are blended in ethyl acetate, uniform fluorescent suspension is formed through ultrasonic stirring, then the fluorescent suspension is sprayed onto the surface of a substrate, and the composite material is obtained through drying. The green I-III-VI multi-component quantum dot microspheres are used as the light-emitting substance, the excellent light-emitting stability is realized by combining the microspherization with the hierarchical porous structure constructed on the surface of the substrate. The spraying process is simple in equipment, low in cost and green in environment protection. The obtained composite material not only has good light-emitting characteristics, but also effectively isolates water vapor, chemical corrosion and other harsh environments through the multi-scale hierarchical porous structure formed on the substrate, thereby excellent thermal stability, chemical stability and weather resistance are exhibited.

In order to improve the resolution of a light-emitting substance image excited by X-rays, provided is a microscope (100) provided with an X-ray irradiation unit and an observation optical system. The X-ray irradiation unit (10) generates a patterned X-ray sheet beam (1) for illuminating an object to be observed (7). The patterned X-ray sheet beam has an intensity pattern (2) in which the intensity varies repeatedly with respect to a position in a certain direction included in the spread in a partial region (32) in the sheet region (3) having the spread. The observation optical system (50) receives radiation having an observation wavelength from an observation region (4) disposed so as to include at least a part of the partial region. The embodiment of the invention also provides a shooting method of the light-emitting substance image.

The present invention relates to a capsule luminescence pigment comprising a luminescent substance and a photochemically switchable absorber as a molecular switch, wherein the luminescent substance and the photochemically switchable absorber are dissolved and / or dispersed as separate molecules in a polymer particle, the luminescent substance has an excitation spectrum, the photochemically switchable absorber has a first absorption spectrum in a first switching state and a second absorption spectrum in a second switching state, the first absorption spectrum of the photochemically switchable absorber does not significantly overlap with the excitation spectrum of the luminescent substance, and the second absorption spectrum of the photochemically switchable absorber significantly overlaps with the excitation spectrum of the luminescent substance, so that in the first switching state significantly more intense luminescence of the luminescent substance occurs than in the second switching state of the photochemically switchable absorber.The present invention further relates to a switchable luminescent printing ink comprising a capsule luminescent pigment as described herein and to a security document, preferably a banknote, comprising an imprint with a first switchable luminescent printing ink as described herein.

Objects of the present invention are to provide: a light-emitting element having a long lifetime and good emission efficiency and drive voltage. One embodiment of the invention is a light-emitting element including, between an anode and a cathode, at least a stack structure in which a first layer, a second layer, and a light-emitting layer are provided in order from the anode side. The first layer includes a first organic compound and an electron-accepting compound. The second layer includes a second organic compound having a HOMO level differing from the HOMO level of the first organic compound by from −0.2 eV to +0.2 eV. The light-emitting layer includes a third organic compound having a HOMO level differing from the HOMO level of the second organic compound by from −0.2 eV to +0.2 eV and a light-emitting substance having a hole-trapping property with respect to the third organic compound.

The reliability of a light-emitting device is improved. Provided is a light-emitting device including a light-emitting layer between a first electrode and a second electrode. The light-emitting layer contains a light-emitting substance and a first organic compound. A difference between a sum of energy of the first organic compound in a ground state and energy of an oxygen molecule in a ground state and energy of a transition state formed by the first organic compound and the oxygen molecule is greater than or equal to 1.84 eV. A difference between the energy of the transition state formed by the first organic compound and the oxygen molecule and energy of an oxygen adduct of the first organic compound in a ground state is less than or equal to 0.87 eV.

Provided is a light-emitting device having high luminous efficiency. The light emitting device includes an organic compound layer between an anode and a cathode. The organic compound layer includes at least a light-emitting layer and an electron injection layer. The light-emitting layer contains a light-emitting substance. The electron injection layer is a mixed layer of a first organic compound and a second organic compound. The first organic compound has strong basicity, and the second organic compound has an electron transport property. The electron injection layer has an ordinary light refractive index of 1.50 or more and less than 1.75 with respect to an arbitrary wavelength in the range of 455 nm or more and 465 nm or less.

Provided is a light-emitting device that has excellent characteristics. Also provided is a novel organic compound. The light-emitting device includes a first electrode, a second electrode, and a light-emitting layer, wherein: the light-emitting layer is located between the first electrode and the second electrode; the light-emitting layer includes a first organic compound and a light-emitting substance; and the first organic compound has deuterium in a partial structure that greatly contributes to a lowest triplet excited state.

The invention relates to the technical field of electrochemiluminescence and biology, in particular to an electrochemiluminescence biosensor based on a two-dimensional rubrene nano-luminescent material and a preparation method and application of the electrochemiluminescence biosensor. The two-dimensional rubrene nano luminescent material (2D-RNPs) is a high-performance luminescent nano material obtained by adopting lamellar graphdiyne (GDY) as a carrier, anchoring a luminescent substance rubrene on the surface of GDY through in-situ assembly and further loading PtNi nano particles. The electrochemical luminescence biosensor for detecting microRNA is constructed by using 2D-RNPs as an electrode modification material and combining a CRISPR / Cas12a system, and the sensor has high sensitivity, high specificity and high stability. The method can be applied to detection of miRNA in serum, cells and exosomes, has the characteristics of low cost, high sensitivity, rapidness and convenience, and provides a new analysis technology for early prevention and precise diagnosis and treatment of clinical diseases.

The laser irradiation portions of the N capillaries numbered n = 1, 2,..., N are arranged on the same plane, and when the laser irradiation intensity of each capillary is set as L(n) and the output intensity of each capillary obtained by the computer when the luminescent substance is present at the same concentration inside each capillary is set as H(n), based on the numerical correction obtained by the computer which varies according to the refractive index n3 of the separation medium according to 1.33 ≤ n3 ≤ 1.41, with respect to an arbitrary refractive index n3, the absolute value of the average value of the second derivative of H(n) is made smaller than the absolute value of the average value of the second derivative of L(n) (see FIG. 11).

The present invention relates to a system of at least two types of switchable capsule luminescent pigments, wherein the capsule luminescent pigments are polymer particles with a diameter of 0.1-1000 µm, each containing at least one luminescent substance and one photochemically switchable absorber, wherein a first type of capsule luminescent pigment comprises a first luminescent substance emitting in a first color in the VIS spectral range; a second type of capsule luminescent pigment comprises the first luminescent substance and a second luminescent substance emitting in a second color in the VIS spectral range, the first and second colors being different; and the two capsule luminescent pigments each comprise the same photochemically switchable absorber, wherein the photochemically switchable absorber has a first and a second switching state, and the absorption spectrum of the photochemically switchable absorber in the second switching state significantly overlaps with the emission spectrum of the first luminescent substance.The present invention further relates to a switchable luminescent printing ink comprising a system of at least two types of switchable capsule luminescent pigments as described herein, and to a security document, preferably a banknote, with a switchable luminescent print comprising a system of at least two types of switchable capsule luminescent pigments as described herein.

Objects of the present invention are to provide: a light-emitting element having a long lifetime and good emission efficiency and drive voltage. One embodiment of the invention is a light-emitting element including, between an anode and a cathode, at least a stack structure in which a first layer, a second layer, and a light-emitting layer are provided in order from the anode side. The first layer includes a first organic compound and an electron-accepting compound. The second layer includes a second organic compound having a HOMO level differing from the HOMO level of the first organic compound by from −0.2 eV to +0.2 eV. The light-emitting layer includes a third organic compound having a HOMO level differing from the HOMO level of the second organic compound by from −0.2 eV to +0.2 eV and a light-emitting substance having a hole-trapping property with respect to the third organic compound.

An analysis method includes: an inflow process of a solution containing a test object, a magnetic support on the surface of which a complex including an antibody labeled with a luminescent agent and recognizes the test object is formed, and a reaction aid to assist reaction of the luminescent agent in a flow cell; a process of capturing the magnetic support over a working electrode by a magnetic field; a process of making the luminescent agent illuminate by applying a voltage to the working electrode; and a process of measuring an amount of luminescence of the luminescent agent. The luminescent process includes: luminescence from action of a first neutral radical, produced from the reaction aid through a cation radical; and luminescence from action of a second neutral radical, produced not through a cation radical, on the luminescent agent. This increases the luminous efficiency of ECL and enhances detection sensitivity.

The invention relates to the technical field of multifunctional nanofibers, and discloses a difunctional polyethylene glycol terephthalate skin-core nano-micron fiber structure which comprises an inner core layer and an outer skin layer, the inner core layer is formed by compounding polyethylene glycol terephthalate and a polyethylene glycol type phase change material, and the outer skin layer is formed by compounding a polyethylene glycol type phase change material and a polyethylene glycol type phase change material; the outer skin layer is modified polyethylene glycol terephthalate, a luminescence agent Eu (CA) 3 (Phen) is doped, the mass percentage of the polyethylene glycol phase change material and the polyethylene glycol terephthalate is 10-60 wt%, and the molecular weight of polyethylene glycol in the polyethylene glycol phase change material is 600-6000. A polyethylene glycol phase change material is dissolved in hexafluoroisopropanol through an electrostatic spinning coaxial spinning technology to prepare an inner core layer spinning solution, the inner core layer spinning solution does not need to be used after being independently packaged, the process is simplified, the size does not need to be controlled, the performance is stable, and the preparation method is suitable for large-scale production.

When laser-irradiation portions of N capillaries with capillary numbers n=1, 2, . . . , and N are arranged on a same plane, a laser-irradiation intensity of each capillary is denoted by L(n), and an output intensity of each capillary by a computer when a light emitting substance having an equal concentration exists inside each capillary is denoted by H(n), an absolute value of an average value of a second derivative of H(n) becomes smaller than an absolute value of an average value of a second derivative of L(n) for any refractive index n3 of a separation medium in a range of 1.33≤n3≤1.41 by digital correction by the computer, which changes according to the refractive index n3 (see FIG. 11).

The present invention discloses a method for detecting hydroquinone in water using chemiluminescence. The chemiluminescence system consists of hydroquinone, peroxydisulfate, and sodium hydroxide. The core of the present invention is that when hydroquinone is added to a mixed solution of peroxydisulfate and sodium hydroxide, chemiluminescence can be generated, and the intensity of the chemiluminescence is positively correlated with the concentration of hydroquinone. A feature of the present invention is that the constructed hydroquinone-peroxydisulfate-sodium hydroxide chemiluminescence method does not require the addition of an additional fluorescent agent, and hydroquinone plays the dual role of a co-reactant and a luminescent agent. The chemiluminescence of the present invention can be used for the selective detection of hydroquinone.