113 results about "Luminescent Agents" patented technology

A value document system, a method for identifying a value document of a value document system, and a luminescent substance set, wherein the value document system includes at least a first value document and a second value document. The first value document has a security feature composed of a combination of at least a first and a second luminescent substance of a first or a second substance class. The second value document has a security feature with at least a first luminescent substance of the first or second substance class. The security feature of the first value document has at least a different intensity ratio of the emission, a different decay time ratio and / or a different decay time sum in two adjacent spectral ranges compared with the security feature of the second value document.

A solution is proposed for testing a luminescence imaging apparatus (105). A corresponding testing device (110) comprises one or more seats (320) and one or more containers (325), each filled with a liquid comprising at least one luminescence substance and accommodated in a corresponding seat (320); the seats (320) have corresponding windows (330) for imaging the luminescence substance of the containers (325) accommodated therein. The seats (320) are slanted with respect to a resting surface (310) of the testing device (110). A holder (305) for use in the testing device (100) is further provided. A luminescence imaging apparatus (105) for use with the testing device (110) is also proposed. Moreover, a system (100) comprising a luminescence imaging apparatus (105) and this testing device (110) is proposed.

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.

A light-emitting apparatus with high emission efficiency is provided. A light-emitting apparatus including a light-emitting device A and a light-emitting device B is provided. The light-emitting device A includes a first electrode A, a second electrode A, a light-emitting layer A interposed between the first electrode A and the second electrode A, and a first layer A interposed between the first electrode A and the light-emitting layer A. The light-emitting device B includes a first electrode B, a second electrode B, a light-emitting layer B interposed between the first electrode B and the second electrode B, a first layer B interposed between the first electrode B and the light-emitting layer B, and a second layer B interposed between the first electrode B and the light-emitting layer B. The light-emitting layer A contains a light-emitting substance A. The light-emitting layer B contains a light-emitting substance B. An emission peak wavelength of the light-emitting substance A is shorter than an emission peak wavelength of the light-emitting substance B. The first layer A and the first layer B contain the same material. An ordinary refractive index of the second layer B is lower than an ordinary refractive index of the first layer A by a value 0.15 or more, with respect to the emission peak wavelength of the light-emitting substance B.

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).

The invention provides chiral photonic crystal toner as well as a preparation method and application thereof. The chiral photonic crystal toner is composed of chiral photonic crystal particles and a luminous substance loaded on the chiral photonic crystal particles, the preparation method comprises the following steps: mixing a liquid crystal polymer monomer, a chiral dopant and a luminescent substance, polymerizing to obtain a luminescent substance-loaded chiral photonic crystal polymer film, and crushing to obtain the chiral photonic crystal toner, the chiral photonic crystal particles have chiral structural colors, and the chiral structural colors are generated in a chiral photonic forbidden band. The chiral photonic crystal toner provided by the invention has the characteristics of chiral structural color and circular polarization luminescence, and can greatly improve the security of information anti-counterfeiting encryption when being applied to an anti-counterfeiting technology.

A display device includes first to third light-emitting devices. The first light-emitting device includes a first anode, a first cathode, and a first light-emitting layer between the first anode and the first cathode. The second light-emitting device includes a second anode, a second cathode, and a second light-emitting layer between the second anode and the second cathode. The third light-emitting device includes a third anode; a third cathode; and a third light-emitting layer and a fourth light-emitting layer between the third anode and the third cathode. The fourth light-emitting layer is between the third light-emitting layer and the third cathode and is in contact with the third light-emitting layer. The first to third light-emitting devices have different emission colors. The first and third light-emitting layers include a first light-emitting substance. The second and fourth light-emitting layers include a second light-emitting substance. A peak wavelength of an emission spectrum of the first light-emitting substance and a peak wavelength of an emission spectrum of the second light-emitting substance are different from each other.

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 luminescent printing ink for security printing includes a fluorescent substance and a phosphorescent substance which each luminesce in the visible spectral range when excited with non-visible excitation light. The printing ink contains one or more capsule luminescent pigment varieties, each of which has a core, a shell encapsulating the core and a luminescent substance present in the core. The fluorescent substance and the phosphorescent substance are each present as a luminescent substance in the core of one or more of the capsule luminescent pigment varieties so that the capsule luminescent pigments form fluorescent capsule luminescent pigments and / or phosphorescent capsule luminescent pigments. The luminescences of the fluorescent and the phosphorescent capsule luminescence pigments have the same light-fastness and the same chemical stability, and their luminescences visually produce a substantially matching colour impression.

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.

The present invention relates to a luminescent material and a Mini-LED device prepared by the luminescent material; the luminescent material is formed by compounding a porous material and a luminescent substance, and has a chemical formula of: N@AX·aPbX2·bMX2, where N denotes the porous material, @ denotes compounding, and AX·aPbX2·bMX2 denotes the luminescent substance, where A is at least one of Cs and Rb, X is at least one of Cl, Br, and I; M is at least one of Mg, Ca, Sr, Ba, Zn, and Cu. and 0.7<a≤1, 0<b≤0.3, and 0.7<a+b<1. The luminescent material has an excellent luminescence property, higher moisture stability, oxygen stability, light stability, and heat stability. High-performance Mini-LED devices can be prepared using the luminescent material prepared in the present application in combination with a blue Mini-LED chip.

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 present invention relates to a long afterglow luminescent organic microsphere, which comprises A) at least one light absorber and B) at least one luminescent agent, wherein the luminescent agent is a monomeric non-polymeric compound and has a molecular weight of less than 10000 g mol ‑1 , C) at least one photochemical buffer of formula (I), and #imgabs0#D) a carrier medium for absorbing components A) to C); wherein the light absorber and the luminescent agent are compounds with different structures, and the content of the carrier medium is 30% to 99%, more preferably 35% to 95% and most preferably 40% to 90% based on the total mass of the four components A) to D). The organic microspheres according to the present invention are particularly suitable for immunochromatographic detection technology. In addition, the present invention also relates to test paper, probe and detection method for immunochromatographic detection.

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.

The present invention discloses a bPAG detection method based on aptamer sandwich-RPA reaction and its application. The detection method comprises an aptamer that can specifically bind to bovine pregnancy-associated glycoprotein (bPAG) as shown in SEQ ID No.1, a forward primer as shown in SEQ ID No.2, and a reverse primer as shown in SEQ ID No.3. Based on the sandwich principle, the aptamer is used as a recognition probe and an amplification template to perform a recombinase polymerase isothermal amplification reaction, and the signal is directly or indirectly amplified by a luminescent substance or biotin on the amplified product, and bPAG is qualitatively and quantitatively detected. The bPAG detection method provided by the present invention is simple to operate, has low detection cost, high detection sensitivity, and short detection time, and can be used for laboratory and field detection of early pregnancy in dairy cows.

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.