58 results about "Benzoanthracene" patented technology

Provided is a method for determining polyaromatic hydrocarbons in a smokeless tobacco product by utilization of on-line solid phase extraction high performance liquid chromatography. Polyaromatic hydrocarbons comprise the following 13 species: naphthalene, 1-methylnaphthalene, 2-methylnaphthalene, fluorene, phenanthrene, anthracene, fluoranthene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenzo(a,h)anthracene, and benzo(g,h,i)perylene. The method is characterized in that a triangular flask loaded with cyclohexane is employed to extract polyaromatic hydrocarbons in a smokeless tobacco product, and the content of polyaromatic hydrocarbons in the smokeless tobacco product is analyzed and determined by utilization of on-line solid phase extraction high performance liquid chromatography. The method is advantageous in that the method is employed to detect a content of polyaromatic hydrocarbons in a smokeless tobacco product, the method is rapid and effective, the pre-treatment is simple, the average relative standard deviation is less than 5%, and the average recovery rate of each index is from 83.6%-104.1%. The method has characteristics of rapidness, accuracy, high sensitivity and good repeatability.

Dibenzoanthracene derivatives are each substituted by an amino compound group at least one of 9-position and 14-position of a dibenzo[a,c]anthracene skeleton and represented by the following formula (1) or (2):wherein X1, X2 and X each independently represents a substituted or unsubstituted arylene or divalent heterocyclic group; A, B, C and D each independently represents a substituted or unsubstituted alkyl, aryl heterocyclic group, and between the adjacent groups, may be fused together to form rings; and Y1 to Y12 and R1 each independently represents a hydrogen atom, a halogen atom, an alkoxy group, or a substituted or unsubstituted alkyl, aryl or heterocyclic group, and, when Y1 to Y12 and R1 are other than a hydrogen atom or a halogen atom, Y1 to Y12 and R1 may be fused together between the adjacent groups to form rings.

A naphthalene derivative represented by the following formula (1) is provided. In the formula (1), Ar1 to Ar6 each represent a substituted or unsubstituted aromatic hydrocarbon cyclic group having 6 to 18 carbon atoms forming a ring. The substituted or unsubstituted aromatic hydrocarbon cyclic group has none of anthracene skeleton, pyrene skeleton, aceanthrylene skeleton and naphthacene skeleton. R1 to R3 each represent an alkyl group, a cycloalkyl group, an alkoxy group, a cyano group, a silyl group or a halogen atom. R1 to R3 each may be bonded in any position of a main-chain naphthalene skeleton or a main-chain benzene skeleton. a and b each represent an integer in a range of 0 to 4. l, m, n and p each represent 0 or 1.

The present invention relates to an organic electronic device comprising, between an anode and a cathode, at least one layer selected from an electron injection layer, an electron transport layer or an electron generation layer, the layer comprising at least one compound of the following Formula (I), wherein the compound of Formula (I) comprises one or more moieties -(A)a-L and the remaining positions marked with * are hydrogen or substituents independently selected from the group consisting of deuterium, fluorine, RF, C1-C20 linear alkyl, C3-C20 branched alkyl, C1-C12 linear fluorinated alkyl, CN, RCN, C6-C20 aryl, C2-C20 heteroaryl, (P=O)R2; each R is independently selected from C1-C20 linear alkyl, C1-C20 alkoxy, C1-C20 thioalkyl, C3-C20 branched alkyl, C3-C20 cyclic alkyl, C3-C20 branched alkoxy, C3-C20 cyclic alkoxy, C3-C20 branched thioalkyl, C3-C20 cyclic thioalkyl, C6-C20 aryl and C2-C20 heteroaryl; A is selected from substituted or unsubstituted C6-C24 aryl or C2-C20 heteroaryl; in case that A is substituted, the respective substituents are independently selected from the group consisting of deuterium, fluorine, C1-C20 linear alkyl, C3-C20 branched alkyl, linear fluorinated C1-C12 alkyl, CN, C6-C20 aryl, and C2-C20 heteroaryl; L is selected from substituted or unsubstituted C2-C42 heteroaryl, substituted or unsubstituted C6-C24 aryl or a polar group selected from (formula (aa)), (formula (bb)) and (formula (cc)), wherein substituents, if present in the respective group L are independently selected from the group consisting of deuterium, fluorine, C1-C20 linear alkyl, C3-C20 branched alkyl, C3-C20 cyclic alkyl, C1-C20 linear alkoxy, C3-C20 branched alkoxy, C1-C12 linear fluorinated alkyl, C1-C12 linear fluorinated alkoxy, C3-C12 branched fluorinated cyclic alkyl, C3-C12 fluorinated cyclic alkyl, C3-C12 fluorinated cycle alkoxy, CN, RCN, C6-C20 aryl, C2-C20 heteroaryl, OR, SR, (C=O)R, (C=O)NR2, SiR3, (S=O)R (S=O)2R, (P=O)R2; each R independenfly selected fromC1-C20 linear alkyl, C1-C20 alkoxy, C1-C20 thioalkyl, C3-C20 branched alkyl, C3-C20 cyclic alkyl, C3-C20 branched alkoxy, C3-C20 cyclic alkoxy, C3-C20 branched thioalkyl, C3-C20 cyclic thioalkyl, C6-C20 aryl and C2-C20 heteroaryl, and a is an integer from o to 2, respective compounds as well as display and lightning devices comprising the same.

The invention discloses a method for measuring polycyclic aromatic hydrocarbons in cigarette cut tobacco by on-line solid phase extraction and high performance liquid chromatography. The polycyclic aromatic hydrocarbons refer to the following thirteen compounds: naphthalene, 1-methylnaphthalene, 2-methylnaphthalene, fluorene, phenanthrene, anthracene, fluoranthene, benzo (a) anthracene, benzo (b) fluoranthene, benzo (k) fluoranthene, benzo (a) pyrene, dibenzo (a,h) anthracene and benzo (g,h,i) perylene. The method is characterized in that the polycyclic aromatic hydrocarbons in the cigarette cut tobacco are extracted by adopting a triangular flask holding cyclohexane, and the content of the polycyclic aromatic hydrocarbons in the cigarette cut tobacco is measured by utilizing the on-line solid phase extraction and the high performance liquid chromatography. The method has the advantages that the content of the polycyclic aromatic hydrocarbons in the cigarette cut tobacco can be rapidly and efficiently detected; pretreatment is simple; average relative standard deviation is less than 5 percent, and the average recovery rate of all indexes is between 83.6 percent to 104.1 percent; the method has the characteristics of being rapid, accurate, high in sensitivity and high in repeatability.

A benzanthracene derivative having hydrogen atom at the 12-position, and an organic electroluminescence device having an organic thin film layer, which has one layer or a plurality of layers including at least a light emitting layer, is disposed between a cathode and an anode and contains the benzanthracene derivative in at least one layer in the organic thin film layer singly or as a component of a mixture. The electroluminescence device provides a great efficiency of light emission, has a long life and exhibits an excellent chromaticity.

The invention relates to a benzanthracene organic electroluminescent material, and a preparation method and application thereof. The invention solves the technical problems of low efficiency and short service life in the blue light material in the prior art. The benzanthracene organic electroluminescent material provided by the invention is prepared by reacting R1 / R2-substituted amine compound and 3-bromo-7,7-dimethyl-7H-benzanthracene. Due to the introduction of substituted groups, the material has the advantages of higher solubility and favorable film-forming properties, and is suitable for manufacturing an OLED (organic light-emitting diode) device. The preparation method of the material is simple and low in cost; and the toxic solvent used in the past organic material preparation process is changed into the common solvent methylbenzene, so that the operation is convenient, the product is easy to purify, and the yield is higher. The benzanthracene organic electroluminescent material can be used as a luminescent material, luminescent main body material or transmission material in an electroluminescent device, and has wide prospects.

The invention belongs to the technical field of analytical chemistry, and particularly relates to a sample pretreatment method and a determination method for detecting a polycyclic aromatic hydrocarbon marker in a traditional Chinese medicine product. The method includes: firstly mixing a to-be-detected sample with ethanol and water, fully wetting and dispersing the to-be-detected sample, and conducting further extraction; selecting n-hexane as an extracting agent to effectively extract benzo[a]anthracene, benzo[b]fluoranthene and benzo[a]pyrene in the to-be-detected sample, and extracting a minimum amount of interfering substance to obtain a first n-hexane extraction solution; then sequentially carrying out Florisil column purification and EU polycyclic aromatic hydrocarbon solid phase extraction column purification on the first n-hexane extraction solution to remove phenolic compounds, chlorophyll, lutein, alkane, fat, yellow pigment and other interfering substances, and removing thesolvent of the obtained purified liquid, thus obtaining a second purified extract, which can be used for precisely detecting the content of the polycyclic aromatic hydrocarbon marker.

The present invention provides a novel compound whose structure is represented by formula (I). Among them, R1 to R5 are independently selected from C1-C20 aliphatic alkyl groups or C6-C20 aromatic groups; Ar is selected from C4-C30 aromatic rings, C4-C30 N-containing heterocycles, and C4-C30 condensed Heterocyclic aromatic hydrocarbons, C4-C30 arylamino or C4-C30 aryloxy; n is 1 or 2; A1 to A4 are N atoms or C atoms; when A1 and A3 are N atoms at the same time, A2 and A4 are C atom; or, when A1 and A4 are N atoms at the same time, A2 and A3 are C atoms; or, when A2 and A4 are N atoms at the same time, A1 and A3 are C atoms; or, when A3 and A4 are N atoms at the same time A1 and A2 are C atoms; or, when A1, A3, and A4 are N atoms at the same time, A2 is a C atom; L is a single bond or a C6-C10 aromatic ring or a C4-C10 N-containing heterocycle. Such compounds are used as electron transport layer materials or light-emitting host materials in organic electroluminescent devices.

The invention relates to an organic compound containing benzanthracene, a preparation method and application thereof, belongs to the technical field of semiconductors, and provides a compound with a structure shown as a general formula (1). The invention also discloses a preparation method and application of the compound. According to the invention, the compound provided by the invention has relatively strong hole transport capability, wherein the hole injection and transport performance is improved under a proper HOMO energy level; under the proper LUMO energy level, the electron blocking effect is achieved, so that the recombination efficiency of excitons in the light-emitting layer is improved; and when the compound is used as a light-emitting functional layer material of an OLED light-emitting device, the exciton utilization rate and the radiation efficiency can be effectively improved by matching with the branched chains in the range of the invention.

The present invention relates to substituted benz[a]anthracene derivatives, to the preparation thereof and to the use thereof in organic electroluminescent devices, as well as to electroluminescent devices, especially blue-emitting devices, in which said compounds are used as matrix material or doping agent in the emitting layer and / or as hole transport material and / or as electron transport material.

The invention relates to the technical field of optical and photoelectric materials, and discloses a derivative based on bis-boroxadiphenylanthracene, its preparation method and application. The bis-boroxadibenzo[A,H]anthracene derivative has the characteristics of high quantum efficiency, high thermal decomposition temperature and glass transition temperature, and easy adjustment of the triplet state energy level, so it has great potential in the field of host materials or luminescent materials. Huge application prospects.