56results about How to "Molecular weight determination" patented technology

The invention belongs to the technical field of organic photoelectric materials, and discloses a spiro-di-thioxanthene-based small-molecule luminescent material and preparation and application thereof. With spiro-di-thioxanthene nucleuses as framework units, and by changing connecting units at both sides of each spiro-di-thioxanthene nucleus and the number of the spiro-di-thioxanthene nucleuses, the molecular weight, Pi conjugacy and intramolecular charge transfer properties of the small-molecule luminescent material disclosed by the invention can be regulated. A spiro-structure therein can adjust the packing method among molecules. The preparation method of the material disclosed by the invention obtains a target compound with diphenyl sulfide and thioxanthone as original reaction materials by a series of simple reactions. The material structure is uniform, and the molecular weight is determined, and the spiro-di-thioxanthene-based small-molecule luminescent material has good solubility and film-forming property in common solvents. The spiro-di-thioxanthene-based small-molecule luminescent material can be applied as a hole transport material, an electron transport material and a luminescent material in OLED (Organic Light Emitting Diode) devices to improve the performance of the devices, and has profound significance for the development of high-performance devices.

The invention belongs to the technical field of photoelectric materials, and particularly relates to luminescent materials based on thioxanthene-fluorene spiral structures and organic photoelectric devices adopting the materials as luminescent layers. The luminescent materials adopts the thioxanthene-fluorene spiral structures as skeleton units. Intermediates are prepared through Ullmann reactions, and then the target compounds are obtained through Ullmann reactions or Suzuki reactions. The materials are single in structure and definite in molecular weight. The spiral structures of the materials can adjust an intermolecular accumulation manner, thus effectively inhibiting exciplex luminescence. The materials have deep meaning for development of high-effect devices. The organic photoelectric devices adopting the materials as the luminescent layers have good luminescent properties and can be used for small organic molecule light emitting diodes.

The invention relates to A-D-A-type water / alcohol-soluble conjugated micromolecules and an application thereof in an organic photoelectric device. The A-D-A-type water / alcohol-soluble conjugated micromolecules have four portions A, B, C and D. A is a conjugated unit having an electron absorption nature, B is a bridged bond connecting the conjugated units A and D, C is a water / alcohol-soluble side chain containing a polar group, and D is a conjugated unit having an electron supply nature. The A-D-A-type conjugated micromolecules can be processed by utilizing high-polarity solvents such as alcohol, water and the like and are suitable for manufacturing complicated photoelectric devices. The A-D-A-type water / alcohol-soluble conjugated micromolecules can be used as a cathode interface decorative material to be applied to the organic photoelectric device, and the performance of the device can be improved.

The invention discloses a water-alcohol-soluble pyridinium salt based on small organic molecules, and a preparation method and an application thereof. According to the material, pyridinium is adopted as a frame; and through the changes upon connection units, molecular weight, pi-conjugacy and electrophilicity of the material can be adjusted. The chemical structure of the material is shown on the right. The preparation method comprises the steps that: p-xylene is adopted as an initial reaction raw material; a series of simple reactions are carried out; and under the effect of thionyl chloride, ring-closure salt-formation is carried out, such that a target compound is obtained. The material provided by the invention has a single structure, a definite molecular weight, good dissolubility, and good film forming property. The material can be used in modification layers of cathodes or anodes of organic photoelectric devices such as polymer electroluminescent diodes, organic solar cells, and the like.

The invention belongs to the technical field of intelligent materials, and discloses a multi-stimulus-response organic small-molecular luminescent material, and preparation and application thereof. By utilizing the dual-fluorescence characteristics of phenothiazine derivatives, a series of luminescent materials are designed and synthesized; and external stimulus effects are utilized to regulate the reciprocal transformation of two conformations, thereby providing a simple feasible effective design strategy for the stimulus-response luminescent material. According to the preparation method, phenothiazine, which is used as a main reaction raw material, is subjected to a series of simple reactions to obtain various target products. The obtained product has the advantages of definite molecular weight, single structure, lower glass transition temperature and greatly higher stimulus-response sensitivity. The stimulus-response principle of the material is conversion between two different conformations instead of the influence of the intermolecular acting force and accumulation mode, so that the material has the multi-stimulus-response characteristic, and is applicable to sensors of force, temperature, pH and the like.

The invention belongs to the technical field of organic photoelectric materials, and discloses a 1,2,3-triazole unit-based micro-molecular luminescent material and an application thereof. The molecular weight, the pi electron conjugate degree, the intramolecular charge transfer and other properties of the material can be adjusted through adopting 1,2,3-triazole as a skeleton unit and changing the kind, the position and the quantity of units connected with the skeleton unit. The organic donor-receptor connection luminescent material can realize intramolecular charge transfer, and reduces the carrier imbalance problem of unipolar luminescent materials in order to simplify the structure of a device and improve the performances of the device. Two adjacent units connected with the triazole unit have spatial distortion due to steric hindrance, so the structural non-planarity is reduced, and the accumulation degree of the material is reduced, thereby the aggregation quenching of the material and luminescence of an exciplex are inhibited. The material can be used in evaporation organic micro-molecular electroluminescent diodes.

The invention provides an organic small-molecule luminescent material and an organic electroluminescent device. The organic small-molecule luminescent material provided by the invention is obtained bycoupling a novel acridine donor unit 10H-spiro[acridine-9,2'-adamantane] with a receptor unit. The organic small-molecule luminescent material has a single structure and a determined molecular weight, is convenient for purification and high in multiple synthetic reproducibility, and has low sublimation temperature and high decomposition temperature and stable film morphology; since the non-aromatic rigid structure adamantine is used as a donor part structure, the organic small-molecule luminescent material has a high photoluminescent quantum yield in the film state; when the organic small-molecule luminescent material is applied to the organic electroluminescent device, the problem of low efficiency of the device caused by serious non-radiative attenuation due to configuration relaxationof an excited state molecule can be effectively solved.

The invention belongs to the technical field of photoelectric materials and particularly relates to an organic small molecular material based on spiro thioxanthene and an organic photoelectric device using the material as a light emitting layer. By using spiro thioxanthene as a framework unit, the organic small molecular material can be used for obtaining a target compound by virtue of friedel craft reaction and Ullmann reaction. The material is single in structure and certain in molecular weight and has good solubility and film forming property in common solvents. The spiro structure of the material can adjust the accumulation mode of molecules, so that an exciplex is effectively prevented from emitting light, therefore, the material is of profound significance in development of high-effect devices. The photoelectric device using the material as the light emitting layer has a good light emitting performance and can be applied to organic small molecular light emitting diodes.

The invention provides a luminescent material and a preparation method thereof and an organic light emitting diode using the same. The luminescent material provided by the invention has a single structure, determined molecular weight, relatively good solubility and film forming property while the film form is stable; and with very high decomposition temperature and relatively low sublimation temperature, the luminescent material can be easily sublimated into a high-purity luminescent material and can be applied to a small-molecule organic light emitting diode. In the preparation method of the luminescent material provided by the invention, p-bromophenol and 2-fluoro-4-bromobenzonitrile are used as start raw materials, an intermediate of the luminescent material is obtained through a series of simple reactions, and finally, the luminescent material is obtained through Ullman reaction or Suzuki reaction; and the steps are simple, and the yield is high. In the organic light emitting diode provided by the invention, a luminescent layer contains the luminescent material and has relatively high luminescent efficiency and stability.

The invention relates to a D (A-Ar) 2 type organic photoelectric compound based on carbazole eleven-membered fused ring planar nucleus and a preparation method and application thereof. The preparationmethod comprises the steps that ternary carbazole central ring units are coupled with thiophene and benzothiophene derivatives through ring closing reaction and coupling reaction to obtain derivatives of a carbazole group-containing eleven-membered fused ring conjugated planar structure aromatic compound and D (A-Ar) 2 type linear organic small molecule photovoltaic material containing carbazolemulti-membered fused ring central nucleus. The derivatives of the eleven-membered large fused ring conjugated planar structure compound and the corresponding D (A-Ar) 2 type linear organic small molecule photovoltaic material have high thermal stability and high hole mobility. Through the development and application of the materials, high-efficiency organic solar cells, organic electroluminescentdiodes, organic field effect transistors and organic near-infrared photoelectric detector materials are obtained.

A luminescent material, a preparing method thereof and an organic light-emitting diode using the luminescent material are provided. The luminescent material has a single structure, a definite molecular weight, and good solubility and film forming ability and is stable in film shape. The luminescent material has a high decomposition temperature and a low sublimation temperature, can easily sublimate into a high-purity luminescent material, and can be used for the small-molecule organic light-emitting diode. The method adopts bromothiophenol and 4-bromo-2-fluorobenzonitrile as initial raw materials, prepares an intermediate of the luminescent material through a series of simple reactions, prepares the luminescent material finally through a Ullmann reaction or a Suzuki reaction, and is simple in steps and high in yield. A luminescent layer of the organic light-emitting diode contains the luminescent material. The organic light-emitting diode has a high luminescent efficiency and stability.

The invention provides a luminescent material and a preparation method thereof and an organic light-emitting diode using the luminescent material. The luminescent material is single in structure and certain in luminescent material, is good in dissolvability and film-forming ability, and is stable in film shape. The luminescent material is high in decomposition temperature and low in sublimation temperature, can easily sublimate to a luminescent material with high purity, and can be applied to a micromolecule organic light-emitting diode. The preparation method comprises: taking 3-bromophenol and 2-fluoro-4-bromobenzonitrile as initial raw materials, carrying out a series simple reactions to obtain an intermediate of the luminescent material, and carrying out an Ullmann reaction or a Suzuki reaction to obtain the luminescent material. The method is simple in steps and high in yield. A luminescent layer of the organic light-emitting diode contains the luminescent material, and the organic light-emitting diode is high in luminous efficiency and stability.

The invention provides a luminescent material and the preparation method thereof and organic luminous diode using the luminescent material. The luminescent material has a single structure, definitive molecular weight, as well as favorable solubility and film forming property; the film formed has stable conformation; besides, the luminescent material also has a very high decomposition temperature and a comparatively low sublimation temperature, and can be easily sublimated to high-purity luminescent material, so the luminescent material can be used in small molecule organic luminous diodes. The luminescent material is prepared with m-bromophenol and 2-Fluoro-4-bromobenzonitrile as the starting material; intermediate of the luminescent material can be obtained through a series of simple reactions, and finally the luminescent material can be obtained through Ullmann reaction or Suzuki reaction. The preparation method is simple in step, but high in productivity. Luminescent layer of the organic luminous diode provided in the invention contains the luminescent material, which ensures a higher luminous efficiency and stability.

The invention discloses a thermotropic delayed fluorescence material, which has a general molecular formula as shown in a formula I. The formula I is shown in the description. An organic light-emitting device prepared by utilizing the material has the characteristics that the power efficiency and the external quantum efficiency of the device can be remarkably improved, the service life of a blue light device is prolonged, a material synthesis and a purification method is simple and suitable for large-scale production and the like, and is an ideal choice as an organic light-emitting device light-emitting material. The application of the organic light-emitting diode material used as a carrier transport material or independently used as a main material in a luminescent material or a luminescent layer is also within a protection range.

The invention belongs to the technical of organic photoelectric material, and more specifically relates to a carbazole nine-element condensed ring central core-containing D(A-Ar)4 type organic photoelectric material, and a preparation method and applications thereof. According to the preparation method, a three-element carbazole central ring unit and a thiophene derivative are subjected to coupling, ring closure reaction and coupling reaction are adopted so as to obtain an aromatic compound derivative containing a carbazole based nine-element condensed ring coplanar structure, and a D(A-Ar)4 butterfly type organic small molecular photovoltaic material containing a carbazole nine-element condensed ring center donor core. The aromatic compound derivative containing a carbazole based nine-element condensed ring coplanar structure, and the D(A-Ar)4 butterfly type organic small molecular photovoltaic material possesses high heat stability and excellent plane performance. The structure witha wide spectrum absorption range and an appropriate energy level is promising to be taken as organic solar energy cell donors or receptor materials.

The invention provides a luminescent material and the preparation method thereof and organic luminous diode using the luminescent material. The luminescent material has a single structure, definitive molecular weight, as well as favorable solubility and film forming property; the film formed has stable conformation; besides, the luminescent material also has a very high decomposition temperature and a comparatively low sublimation temperature, and can be easily sublimated to high-purity luminescent material, so the luminescent material can be used in small molecule organic luminous diodes. The luminescent material is prepared with m-Bromothiophenol and 2-Fluoro-4-bromobenzonitrile as the starting material; intermediate of the luminescent material can be obtained through a series of simple reactions, and finally the luminescent material can be obtained through Ullmann reaction or Suzuki reaction. The preparation method is simple in step, but high in productivity. Luminescent layer of the organic luminous diode provided in the invention contains the luminescent material, which ensures a higher luminous efficiency and stability.

The invention provides a luminescent material and a preparation method thereof, and an organic light emitting diode using the luminescent material. The luminescent material has a single structure and definite molecular weight and is higher in solubility and film-forming property, and the form of a thin film is stable; with extremely high decomposition temperature and relatively low sublimation temperature, the luminescent material can be easily sublimated into a high-purity luminescent material and can be applied to a small-molecular organic light emitting diode. According to the preparation method of the luminescent material, m-bromine thiophenol and 2-fluorine-4-benzonitrile bromide serving as start raw materials are subjected to a series of simple reactions to obtain a middle body of the luminescent material, and finally the middle body is subjected to a Ullmann reaction or a Suzuki reaction to obtain the luminescent material; the steps are simple, and the yield is high. According to the organic light emitting diode provided by the invention, a light emitting layer contains the luminescent material, so that the organic light emitting diode is higher in light emitting efficiency and stability.

The invention discloses an organic small molecular photoelectric functional material adopting 3-benzoylpyridine as a receptor unit, which mainly depends on hydrogen-bond interaction of nitrogen in benzoylpyridine, can effectively avoid the deficiency of low radiation rate caused by large torsion angle, thereby improving the horizontal molecular orientation, and realizing the structure simplification of devices and performance of the devices and prolonging the service life. By controlling the type and size of a donor connecting unit, the intrinsic characteristics of the material such as a molecular weight, a conjugated length, charge transfer and the like can be effectively adjusted. The invention also discloses a preparation method and application of the organic small molecular photoelectric functional material. The organic small molecular photoelectric functional material adopting 3-benzoylpyridine as the receptor unit has the advantages that the radiation rate coefficient is high, the quantum efficiency is high, the current carrier transport performance is high, the color is adjustable when being used as a luminescent layer of an organic electroluminescent device, high efficiencyand stability can be realized, the service life is long, and the like.

The invention discloses a biceptor organic luminescence small molecule material. Carbonyl is connected with sulfuryl by a benzene ring to form a novel receptor framework unit; one benzene ring is connected to each of two sides of the novel receptor framework unit so as to add reactive sites. The invention also discloses a preparation method and application of the biceptor organic luminescence small molecule material. The luminescence material connected with a receptor can realize a transfer effect of intramolecular charges; with a bipolar transmission characteristic of the luminescence material, the unbalance of a unipolar luminescent material charge carrier is reduced, and the structure of a device is simplified and the performance of the device is improved. The biceptor organic luminescence small molecule material disclosed by the invention is simple in preparation; various target products are obtained by a series of simple reactions. The material has the advantages of determined molecular weight, single structure, high decomposition temperature and lower sublimation temperature, and can be applied to an organic light-emitting diode.

The invention belongs to the technical field of electroluminescent materials and discloses a conjugated compound containing 9,9-diimidazolyl thiaxanthene and preparation and an application thereof. The conjugated compound containing 9,9-diphenyl thiaxanthene has a structural formula as shown in a formula 1 or a formula 2, wherein R1 and R2 are same or different aromatic rings formed by vinylene bases, ethynylene bases and carbon and hydrogen atoms with donor giving properties, aromatic rings formed by carbon, silicon and hydrogen atoms, C1-C24 alkyl, alkyl substituted conjugated units, alkoxylsubstituted conjugated units or alkyl and alkoxyl simultaneously substituted conjugate units. The compound has a fluorescent property, and can improve the external quantum efficiency of an apparatusobviously as an organic electroluminescent dioxide. The formula is as shown in the description.

The invention discloses a self-host organic light-emitting small molecule material connected with a sulfur-containing non-conjugated unit by a carbonyl group, and increasing reaction sites by connecting benzene rings on two sides separately. The invention further discloses a preparation method and application of the self-host organic light-emitting small molecule material. The self-host organic light-emitting small molecule material disclosed by the invention realizes the intramolecular charge transfer function, and the sulfur-containing non-conjugate unit owned by the self-host organic light-emitting small molecule material can act as a part of a host to show high device performances in a simplified device structure. The self-host organic light-emitting small molecule material disclosed by the invention is simple in preparation method, and various target products are obtained through a series of simple reactions. Furthermore, the material disclosed by the invention is determined in molecular weight, single in structure, very high in decomposition temperature and lower in sublimation temperature, thereby being easily sublimated into a high-purity light-emitting material.

The invention discloses tetradentate cyclometalated platinum (II) and palladium (II) complex phosphorescent materials containing a five-membered heteroaryl ring. The tetradentate cyclometalated platinum (II) or palladium (II) phosphorescent material is shown as formula 1 or formula 2 (shown in the description), wherein M1 or M2 is respectively platinum or palladium, R1, R2, R3, R4, R5, R6, R7 or R8 is respectively hydrogen, deuterium, C1-C6 alkyl, C1-C6 alkoxy, halogen, amino, C6-C20 aryl or C6-C20 heteroaryl, or two carbons neighboring a heteroaryl ring are connected to a cyclosubstituent, n1-n8 represent the number of substituents, n1 or n5 is respectively 1 to 2, and n2, n3, n4, n6, n7 or n8 is respectively 1 to 3. The phosphorescent materials disclosed by the invention can effectively increase the chemical stability and thermostability of molecules, have good luminescent property, and can be used in organic light-emitting devices.

The invention provides a luminescent material and a preparation method thereof, and an organic light emitting diode using the same. The luminescent material has the advantages of single structure, definite molecular weight, relatively good solubility and film-forming property, and stable thin film morphology; the luminescent material has quite high decomposition temperature and relatively low sublimation temperature, is easily sublimated into a luminescent material with high purity, and can be applied to the small-molecular organic light emitting diode. According to the preparation method of the luminescent material, m-bromothiophenol and 2-fluoro-4-bromobenzonitrile are used as starting raw materials, an intermediate of the luminescent material is obtained through a series of simple reactions, and finally, the luminescent material is obtained through an Ullmann reaction or a Suzuki reaction; the steps are simple, and the yield is high. A luminescent layer of the organic light emitting diode contains the luminescent material and has relatively high luminous efficiency and stability.

The invention involves A‑D涉A water / alcohol -soluble co -轭 small molecules and its application in organic optoelectric components.The A‑D型A water / alcohol -soluble co -dissolved small molecules include four parts of A, B, C, and D.A is a common unit with an electron -absorbing nature. B is the bridge key to connect A and D co -cricket units. C is a water / alcohol -soluble side chain containing polar groups. D is a units with electronic properties.The A‑D型A co -轭 small molecule can be processed with strong polar solvents such as alcohol and water, which is suitable for making complex optoelectric components.A‑D型A water / alcohol -soluble co -轭 Small molecules can be used as an cathode interface to decorate the material in organic optical components to improve the performance of the device.

The invention belongs to the field of organic electrochemistry, and discloses a hole transport material based on spiral dithioxanthene micromolecules and a preparation method and an application thereof. The structure of the hole transport material is shown as P1n. According to the hole transport material, a spiral dithioxanthene core is used as a skeleton unit, and the molecular weight, pi conjugacy and material energy level structure properties of the material can be adjusted by changing connecting units on the two sides and the number of the connecting units. The hole transport material is single in structure and definite in molecular weight, has good solubility and film-forming property in common solvents, and can be used as the hole transport material to be applied to perovskite cell devices, so that the performance of the devices is improved, and the hole transport material has far-reaching significance in development of high-performance devices.

The invention belongs to the field of organic photoelectric materials, and discloses a nonaromatic amine donor / acceptor micromolecular material as well as preparation and application. The structure formula of the nonaromatic amine donor / acceptor micromolecular material is as shown in a formula (I) below, at least one of R1, R2 and R3 in the formula (I) is selected from any one donor substituent group of D1-D4, and others are phenyl groups. The nonaromatic amine donor / acceptor micromolecular material takes thioxanthone, dibenzothiophene and dibenzofuran derivative as donors while takes triazineas an acceptor, has the characteristics of simple structure and determined molecular weight, and can be easily purified and prepared in large scale. The material presents very high fluorescence quantum yield, can realize efficient non-doping OLED application, and has prominent meaning on simplifying an OLED preparation technology and lowering the cost. (The formula (I) is shown in the description).

The invention discloses a method for detecting avanafil and related impurities thereof, ammonium formate-acetonitrile is taken as a mobile phase, and avanafil is analyzed and identified by adopting an analysis method of UPLC (Ultra Performance Liquid Chromatography) compatible with LC-MS (Liquid Chromatography-Mass Spectrometry), so that avanafil synthesized by adopting a specific synthesis route and related impurities thereof can be effectively separated; and a new method is provided for key process parameter control and quality control of the avanafil bulk drug.

The invention discloses a spiro donor organic luminescent small molecule material containing an alkyl sulfur atom. The spiro structure donor containing an alkyl sulfur atom and a triazine unit are used as the skeleton unit of the acceptor molecule. Other aromatic amine compounds are connected to the donor. The invention also discloses the preparation method and application of the organic luminescent small molecule material. The luminescent material of the present invention can realize intramolecular charge transfer, and its bipolar transport characteristics reduce the problem of carrier imbalance in unipolar luminescent materials, thereby simplifying the device structure and improving device performance. The molecular weight of the material is determined, the structure is single, and it has a high decomposition temperature and a low sublimation temperature, so it can be applied to organic light-emitting diodes; the light-emitting material of the present invention can not only As a high-efficiency blue light-emitting material in evaporation devices, it can also be used as a high-efficiency light-emitting material in non-doped solution processing devices.

The invention discloses a fluorene-based oligomer and its synthesis method and application. The method comprises the following steps: 2-bromofluorene, 4-(2-chloroethyl)morpholine hydrochloride and potassium hydroxide are heated to reflux under the protection of an inert gas, and the reaction crude product is recrystallized in petroleum ether after silica gel column chromatography , to obtain ethyl morpholine-substituted bromofluorene monomers; ring compounds with brominated ends react with alkyl bromide, 2-isopropyl-4,4,5,5-tetramethyl-1 under palladium catalyst conditions , 3,2-dioxaborane reaction to obtain cyclic compounds with borate esters at both ends; mix the above-mentioned fluorene monomers with cyclic compounds, reflux reaction under the protection of inert gas, cool and purify to obtain fluorene-based of oligomers. The invention has good electron extraction and transport properties, effectively reduces the potential barrier between the organic active layer and the metal electrode, and can be applied to the modification of the cathode or anode of organic optoelectronic devices such as polymer electroluminescent diodes and organic solar cells Floor.