Abstract: The present invention provides a labeling method for improving signal intensity of time-resolved fluorescence; and the labeling method can be applied in the detection of olaquindox or gentamicin. The olaquindox antibody complex immunolabelled by time-resolved fluorescence prepared in the present invention has a more stable structure, stronger fluorescence signal, and higher detection sensitivity.

Abstract: The present disclosure provides a compound having a structure represented by Formula 1, where X1-X4 are each independently selected from a carbon atom or a nitrogen atom, and at least two of X1-X4 are each a nitrogen atom; R1-R4 are independently absent or selected from hydrogen, C1-C20 alkyl, C1-C20 alkoxy, C1-C20 alkylthio, C1-C20 alkylamino, C6-C30 aryl, or C2-C30 heteroaryl; m is 1 or 2; n and q are each independently selected from 0, 1, or 2, n+q?1, and m+n+q=3; Ar is C6-C30 aryl. The molecular structure of the compound has a nitrogen-containing multidentate ligand suitable to form complexes with metal Yb or LiQ to form a metal organic complex having multidentate bondings. When applied to an OLED device, it can effectively lower the turn-on voltage and operating voltage, improve the efficiency, and prolong lifetime of the OLED device.

Abstract: A quinoxaline compound and application thereof are described. In an example, the quinoxaline compound has a high glass transition temperature and molecular thermal stability, suitable HOMO and LUMO energy levels, and high electron mobility, and can effectively improve luminous efficiency and service life of an organic electroluminescent device after being applied to preparation of the device.

Abstract: A heterocyclic compound containing heteroatom substituted fluorene is provided in the present disclosure. The heterocyclic compound includes a structure: Y1 is selected from O or S; X1, X2, X3, X4, X5, X6, X7, and X8 are independently selected from CRa or N; X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19, X20, X21, X22, X23, and X24 are independently selected from CR1 or N; Ra is independently selected from hydrogen, deuterium, tritium, halogen, nitrile, cyano, nitro, hydroxyl, carbonyl, ester, carboxyl, imide, amide, C1-C20 alkoxy, C1-C20 alkyl, C3-C20 cycloalkyl, C2-C20 alkenyl, C3-C20 cycloalkenyl, silyl, boron, phosphine oxide, phosphine, sulfonyl, amine, C6-C30 aryl, C3-C30 heteroaryl, or a ring structure; Y2, and Y3 are independently selected from O, S or NR2; Ar1 and Ar2 are independently selected from aryl or heteroaryl; and R1 and R2 are independently selected from hydrogen, deuterium, C1-C20 alkyl, C6-C30 aryl, or C3-C30 heteroaryl.

Abstract: A compound is provided as having a structure of Formula I: where X1 and X2 are each independently a nitrogen atom or a C—R group, C is a carbon atom, R is a hydrogen atom, a deuterium atom, a halogen atom, or a cyano group, CR, and at least one of X1 and X2 is N; L1, L2, and L3 are each independently a single bond, a substituted or unsubstituted aryl group, or substituted or unsubstituted aryl heteroaryl group; and Ar1, Ar2 are each independently a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group.

Abstract: A compound is provided as having the structure of Formula I, where: A and B are each independently a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; L1, L2 are each independently a single bond, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; Ar1, Ar2, Ar3, and Ar4 are each independently a hydrogen atom, a deuterium atom, a cyano group, a nitro group, an amino group, a hydroxy group, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.

Abstract: The present disclosure relates to a compound, a material for an organic electroluminescent device and an application thereof. The compound provided by the present disclosure has a relatively high refractive index and can effectively improve the light extraction efficiency and the external quantum efficiency of an organic electroluminescent device when used in the organic electroluminescent device especially as a material for the capping layer. The compound has a relatively high refractive index in the region of visible light (400-750 nm), which is conducive to improving the light-emitting efficiency. The compound has a relatively large extinction coefficient in the ultraviolet region (less than 400 nm), which is conducive to absorbing harmful light and protecting eyesight and has a relatively small extinction coefficient in the region of blue light (400-450 nm) and hardly absorbs blue light, which is conducive to improve the light-emitting efficiency.

Abstract: A long-distance high-voltage cable fault degree detection method. A cable fault positioning curve is obtained by using a frequency-domain reflection method, and a cable fault positioning compensation curve is determined by means of theoretical calculation in combination with the parameters of a frequency-domain incident signal, cable structure parameters, and characteristic parameters of each layer of materials of the field test; furthermore, a cable fault diagnosis curve is determined on the basis of the cable fault positioning curve and the cable fault positioning compensation curve, the severity of the fault is determined by means of the amplitude of a peak point of the cable fault diagnosis curve, and the accuracy of long-distance high-voltage cable fault degree diagnosis is effectively improved.

Abstract: The present application discloses a compound, a display panel and a display device. The compound has the structure shown in Formula 1. The compound of the present application can improve the light extraction efficiency and luminous efficiency, especially the external quantum efficiency of a device, and can also effectively reduce the color shift of the device at multi-angle display.

Abstract: Provided are a phenanthrene compound and use thereof, wherein the phenanthrene compound has the structure represented by Formula I. The phenanthrene organic compound contains a heteroarylamine structure, and at least one of Ar2 and Ar3 is selected from substituted or unsubstituted C2-C20 nitrogen-containing fused-ring heteroaryl having an electron-withdrawing property. All active sites of phenanthrene are substituted and passivated, and the phenanthrene has a stable chemical structure and high thermal stability. The phenanthrene compound thus has a high glass transition temperature and a high refractive index in the visible-light field, and when applied to the CPL layer of an organic electroluminescent device, can effectively improve the light extraction efficiency of the organic electroluminescent device, thereby improving the luminescence efficiency and service life of the organic electroluminescent device.

Abstract: Provided is a compound represented by formula 1, and a display panel and a display apparatus including the compound. In formula 1, L1 and L2 are each independently selected from the group consisting of a single bond, C6-C30 aryl, and C4-C30 heteroaryl; a and b are each independently selected from 0, 1, 2, 3, or 4; D1 and D2 are each independently a nitrogen-containing electron donor unit selected from the group consisting of carbazolyl and derivative groups thereof, acridinyl and derivative groups thereof, diarylamino and derivative groups thereof, and triarylamino and derivative groups thereof; and c and d are each independently selected from 0, 1, 2, 3, or 4, and c+d?1.

Abstract: A heterocyclic compound containing heteroatom substituted fluorene and an optoelectronic device are provided. The heterocyclic compound includes a structure in Formula I: where Y is selected from O or S; at least one of X1, X2, X3, X4, X5, X6, X7 and X8 is a N atom, and rest are CR2; L1, L2, and L3 are independently selected from single bond, substituted or unsubstituted aromatic groups; Ar1 and Ar2 are independently selected from substituted or unsubstituted aromatic groups or heteroaryl groups; R1 is selected from a hydrogen atom, a deuterium atom, or an aromatic group or a heteroaryl group condensed with adjacent groups; and R2 is selected from a hydrogen atom, a deuterium atom, a substituted or unsubstituted C1-C5 alkyl group, a halogen, a cyano group, or an amino group.

Abstract: The present disclosure provides a heterocyclic compound and an organic electroluminescence device. The heterocyclic compound has a structure as shown in formula I.

Abstract: Provided are a heterocyclic arylamine compound, an organic electroluminescent device and a display panel. The heterocyclic arylamine compound has a structure represented by Formula I. The structure of the heterocyclic arylamine compound is designed so that the heterocyclic arylamine compound has relatively high molecular polarizability, relatively high refractive index and relatively high crystallinity and may be used as a material of a capping layer to prepare a top-emitting OLED device, and the prepared OLED device has relatively high current efficiency and long lifetime.

Abstract: The present invention provides a labeling method for improving signal intensity of time-resolved fluorescence; and the labeling method can be applied in the detection of olaquindox or gentamicin. The olaquindox antibody complex immunolabelled by time-resolved fluorescence prepared in the present invention has a more stable structure, stronger fluorescence signal, and higher detection sensitivity.

Abstract: Provided are an organic compound and an application thereof The organic compound has good thermal stability and film formability and an appropriate glass transition temperature Tg, which is conducive to forming a stable and uniform thin film during thermal vacuum evaporation and reducing phase separation, maintaining the stability of a device. When used as a host material of a light-emitting layer and/or a material of a hole transport layer of an organic electroluminescent device, the organic compound has balanced hole and electron transport performance and can obtain a relatively wide carrier recombination region, improving the luminescence efficiency of the device.

Abstract: The present disclosure relates to a compound, a material for an organic electroluminescent device and an application thereof. The compound has a structure represented by Formula (1). The compound has a relatively high refractive index in the region of visible light (400-750 nm), which is conducive to improving the light-emitting efficiency.

Abstract: A compound, a material for an organic electroluminescent device and an application thereof are disclosed herein. The compound has a structure represented by Formula (1). The compound has a relatively high refractive index and can effectively improve the light extraction efficiency. The external quantum efficiency of the compound makes it suitable for use as a capping layer when used in an organic electroluminescent device. The compound has a relatively high refractive index in the region of visible light (400-750 nm), which is advantageous for improving the light-emitting efficiency. The compound has a relatively large extinction coefficient in the ultraviolet region (less than 400 nm), which is advantageous for absorbing harmful light and protecting eyesight. Meanwhile, a deuterium atom may be introduced into the compound to significantly improve the device lifetime.

Abstract: A heterocyclic compound containing heteroatom substituted fluorene is provided in the present disclosure. The heterocyclic compound includes a structure: Y1 is selected from O or S; X1, X2, X3, X4, X5, X6, X7, and X8 are independently selected from CRa or N; X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19, X20, X21, X22, X23, and X24 are independently selected from CR1 or N; Ra is independently selected from hydrogen, deuterium, tritium, halogen, nitrile, cyano, nitro, hydroxyl, carbonyl, ester, carboxyl, imide, amide, C1-C20 alkoxy, C1-C20 alkyl, C3-C20 cycloalkyl, C2-C20 alkenyl, C3-C20 cycloalkenyl, silyl, boron, phosphine oxide, phosphine, sulfonyl, amine, C6-C30 aryl, C3-C30 heteroaryl, or a ring structure; Y2, and Y3 are independently selected from O, S or NR2; Ar1 and Ar2 are independently selected from aryl or heteroaryl; and R1 and R2 are independently selected from hydrogen, deuterium, C1-C20 alkyl, C6-C30 aryl, or C3-C30 heteroaryl.

Abstract: Provided are a compound, a material for an organic electroluminescent device and an application thereof. The compound has a structure which is formed by substituting at any substitutable position of a structure represented by Formula I with at least one cyano group. The compound has a relatively high refractive index in the region of visible light (400-750 nm) and a reduced extinction coefficient K. When used in the organic electroluminescent device especially as a material for a capping layer, the compound can effectively improve the light extraction efficiency of an organic optoelectronic device, improve external quantum efficiency (EQE), implement display at various angles, and can effectively alleviate a color cast.