55 results about "Molecular stacking" patented technology

An anisotropic dye film having high dichromatic properties is provided. An anisotropic dye film wherein the period d attributable to molecular stacking is at most 3.445 AA, and the column length L thereof is at least 105 AA. The anisotropic dye film preferably has a degree of orientation of the molecular stacking axes of at least 85% and a film thickness of at most 30 m, and is formed by a wet film-forming method. Since it has a molecular alignment suitable to develop a dichroic ratio, it provides high dichromatic properties. A polarizing element having this anisotropic dye film is excellent in heat resistance, light fastness and polarizing performance.

An anisotropic dye film having high dichromatic properties is provided. An anisotropic dye film wherein the period d attributable to molecular stacking is at most 3.445 Å, and the column length L thereof is at least 105 Å. The anisotropic dye film preferably has a degree of orientation of the molecular stacking axes of at least 85% and a film thickness of at most 30 μm, and is formed by a wet film-forming method. Since it has a molecular alignment suitable to develop a dichroic ratio, it provides high dichromatic properties. A polarizing element having this anisotropic dye film is excellent in heat resistance, light fastness and polarizing performance.

The invention discloses a difluoro-bithiophene polymer as well as a preparation method and application thereof to an FET (field effect transistor). The structural formula of the difluoro-bithiophene polymer is as shown in formula I, wherein n is a natural number ranging from 5 to 100. According to the invention, a fluorine atom is introduced to a thiophene ring to obtain difluoro-bithiophene (2FBT); the fluorine atom has a strong electron-withdrawing property, the atomic radius is small, and the interaction with other atoms such as a hydrogen atom or a sulphur atom is relatively strong, so that the introduction of the fluorine atom can improve the molecular planarity and promote molecular stacking. A polymer taking 2FBT as a donor has relatively low LUMO energy level, and the electron injection of a transport layer is relatively easy, so that the bipolar transfer characteristic can be expressed. The difluoro-bithiophene polymer provided by the invention can be used as a semiconducting material to prepare an OFET (organic field effect transistor). The OFET prepared by taking the difluoro-bithiophene polymer as a semiconducting layer has relatively high migration rate (mu), thereby having a good application prospect in bipolar OFETs.

Processes and formulations are provided that are capable of protecting, stabilizing, and/or topically delivering one or more bio-affecting compounds. More particularly, the invention relates to processes of making a composition having a host compound capable of accepting one or more bio-affecting guest compounds, and new compositions formed by the processes. The processes and formulations can be used to protect and stabilize bio-affecting compounds of widely-different solubility characteristics. The processes include formulating a host composition having a host capable of accepting a guest, the processes comprising mixing, in any order: (i) a non-ionic surfactant s elected from the group consisting of compounds having a chemical structure: where "-CH-O-CH-" represents an epoxide group, where Ra and Rb are hydrocarbons that can be the same or different, where at least one of the Ra and Rb hydrocarbons includes an epoxide group within 3 carbons of the hydrocarbon attachment to contribute to the desired hydrolypid balance of 7-9, where Rc is hydrogen or a methyl group, and where Rd is a methylene group (-CH2-), an ethyl group (-CH2-CH2-), or a structurally equivalent link with a bond length range about the same as or shorter than that provided by an ethyl group, and having a hydro-lipid balance in the range of 7-9; (ii) an amphoteric surfactant selected from the group consisting of organic compounds having the chemical formula NH3-R-COOH, where R is a straight, branched, or aromatic hydrocarbon structure having 6-24 carbons; (iii) a solvent for the amphoteric surfactant; (iv) an aromatic selected from the group consisting of compounds having at least one aromatic five or six-member ring; (v) an aluminum cation; (vi) a Lewis acid that is not a Bronsted-Lowry acid; and (vii) a Bronsted-Lowry acid. According to a further aspect of the invention, one or more compounds are selected to be sequentially mixed with the host composition to form a stable molecular environment, which is sometimes referred to herein as a process of molecular stacking.

The invention discloses a donor-receptor type organic semiconductor material with a removable group anthracene unit, which is an alternating copolymer of an anthracene donor unit after ring-opening addition and other electorn-deficient units. According to the donor-receptor type organic semiconductor material, under a warming condition, an anthracene ring-opening addition unit can generate retro-diels-alder reaction. The invention further discloses a preparation method of the donor-receptor type organic semiconductor material with the removable group anthracene unit. The donor-receptor type organic semiconductor material keeps compact and ordered molecular stacking under a solid state while having good solution machinability, and has relatively high charge transmitting capability. The donor-receptor type organic semiconductor material can be applied to various organic photoelectric devices such as organic electroluminescence, organic photovoltaics and field effect transistors by serving as an active layer, an interface layer and the like, and is one kind of materials with commercial application prospect.

The invention discloses an organic metal iridium compound and an organic light-emitting device (OLED). A complex is fused into a ring by using a 4-sit substituent and a 5-sit substituent of a quinoline position so as be used as a structural unit part of the organic metal iridium compound, so that not only is the inter-molecular stacking effect reduced, but the improvement of the photoelectric performance of the OLED device is also facilitated, the sublimation temperature is lowered, and the original organic metal iridium compounds which are difficult to sublimate and purify are enabled to become materials which are easy to sublimate and easy in large-scale evaporation preparation of OLED devices. The organic metal iridium compound provided by the invention has good photoelectric propertiesand can be applied to the field of OLED illumination or OLED display.

The invention provides a compound represented by general formula (I). The compound can be used in an organic electroluminescent device as a hole transport material. The compound has a large conjugateplane, facilitates molecular accumulation, and has good thermodynamic stability; when used as the hole transport material, the compound is high in hole transition capability, has a proper energy levelwith an adjacent layer, is beneficial to hole injection and migration, can effectively reduce the turn-on voltage of the prepared organic electroluminescent device, has a relatively high hole migration rate, can realize good electroluminescent efficiency in the device, and can prolong the service life of the device. The invention further provides the organic electroluminescent device containing the compound of the general formula (I), and a display device.

The invention relates to an organic electroluminescence material of a spirobifluorene structure. The structure of the material is shown in a formula I. The organic electroluminescence material takes spirobifluorene as a main body, therefore the glass transition temperature can be increased, the molecular heat stability is high, the moderate HOMO and LUMO energy levels and the high content of Eg are achieved, the photoelectric property can be effectively improved, and the service life of an OLED device is prolonged. Arylamine groups are introduced, compared with simple spirobifluorene, a betterplane structure and a better conjugated system are achieved, synthesis and purification are simple, the cost is low, benzene rings contain methyl, therefore the intermolecular distance can be increased, association of compounds is avoided, and the molecular stacking probability is reduced. During evaporation, the crystallization phenomenon cannot easily occur, when the material is applied to theOLED device, the OLED finished product rate can be effectively increased, the luminescence efficiency can be effectively improved, and the film-forming property is good. The material can also be takenas a luminescent material for using, and the service life of the luminescent material can be effectively prolonged.

The invention relates to a fluorine-containing hole material of a spirobifluorene structure. The structure of the hole material is shown in the formula I. The hole material of the spirobifluorene structure is a novel OLED material, the novel material takes spirobifluorene as a main body, and therefore the glass transition temperature can be increased; the molecular thermal stability is high, moderate HOMO and LUMO energy levels and higher Eg are achieved, the photoelectric performance can be effectively improved, and the service life of OLED devices is prolonged. Arylamine groups are introduced, compared with single spirobifluorene, the better plane structure and the better conjugated system are achieved, synthesis and purification are simple, and the cost is low; benzene rings contain fluorine atoms, therefore the intermolecular distance can be increased, association among compounds is avoided, and the molecular stacking probability is reduced. In the evaporation process, the crystallization phenomenon cannot easily occur, the fluorine-containing hole material can effectively increase the finished product rate of OLEDs when applied to the OLED devices and effectively improve the luminous efficiency, and is good in film formation performance. The material can be used as a luminescent material, and the service life of the luminescent material can be effectively prolonged.

The invention discloses a monocarbazole/dicarbazole hole transport material as well as a preparation method and application thereof. The chemical structural general formula of the monocarbazole/dicarbazole hole transport material is shown as a formula I. Herein, N-ethyl carbazole or N,N'-dicarbazole is used as a core, alkoxy or alkylthio substituted triphenylamine is used as a side group, and an olefinic bond or an acetylene bond is introduced between the core and the side group to increase a conjugated system and regulate and control the molecular accumulation capability and the hole transport capability of the conjugated system. A photophysical property (ultraviolet and fluorescence) test, an electrochemical performance test and a photovoltaic device performance test show that the chargetransport material has good performance and has the characteristics of simplicity in synthesis, low raw material cost, high performance efficiency and the like; therefore, the material can be appliedto photoelectric devices such as organic photosensitive drums, organic light-emitting diodes and solar cells as a hole transport material, and has a wide application prospect.

The invention relates to the field of organic light-emitting diode (OLED) display, and particularly relates to an organic electroluminescent material and synthesis and application thereof. A general structure formula of the organic electroluminescent material is showed in the specification. According to the organic electroluminescent material provided by the invention, the distance between molecules can be increased, the association between compounds can be prevented and the probability of molecular stacking can be reduced because of methyl groups contained on a specific benzene ring. The organic electroluminescent material is not prone to crystallization during evaporation plating, and has high hole mobility, relatively good film stability and suitable molecular energy levels, so that theorganic electroluminescent material can be applied in OLED field. The organic electroluminescent material can effectively improve the rate of finished products of OLED, reduce the driving voltage, improve the luminescent efficiency and increase the service life when applied to OLED devices. The organic electroluminescent material has broad application prospects.

The present invention relates to an organic compound having a structure represented by a general formula I, the organic compound is obtained with spirobifluorene as a main body, so that the glass transition temperature can be increased, and the molecular thermal stability is high; the compound has appropriate HOMO and LUMO energy levels and relatively high Eg, so that the photoelectric property can be effectively improved, and the service life of an OLED device can be effectively prolonged. Meanwhile, by means of an arylamine group, compared with pure spirobifluorene, the compound has a betterplanar structure and a conjugate system. The compound is relatively simple to synthesize and purify and low in cost; meanwhile, the benzene ring contains methyl, so that the distance between molecules can be increased, association between compounds is prevented, and the probability of molecular stacking is reduced. The compound is not liable to crystallize during evaporation, can effectively improve the yield of OLEDs when being applied to OLED devices, can effectively improve the luminous efficiency, and is good in film-forming property. The material can also be used as a luminescent material, and the service life of the luminescent material can be effectively prolonged.

The invention belongs to the field of organic electroluminescence and particularly relates to an organic electroluminescent material with xanthene spiroazaanthrones, a preparation method and an application thereof. The organic electroluminescent material, the preparation method and the application have the advantages that xanthene rings are connected with azaanthrone rings by spirocarbon, the conjugation degree of the xanthene rings and the azaanthrone rings can be effectively reduced, and the HOMO and LUMO energy level is proper; by modification for the xanthene rings, the distorted structures of the xanthene and the azaanthrone rings can be further changed, and the rigidity and the asymmetry of molecules are enhanced; due to the rigid structure, the structure looseness can be effectively inhibited, the stability of the material can be enhanced and the photoelectric property can be improved; and due to the asymmetric structure, the molecular interaction can be greatly inhibited and a highly-disordered molecular stacking mode is formed in a solid-state thin film. The compound has good application effect in OLED (Organic Light-Emitting Diode) luminescent devices and has good industrial prospect.

The invention discloses a semiconductor material and preparation methods and applications thereof. A molecular structure general formula of the material is one of the formulas shown in the description. The semiconductor material provided by the invention is an imide derivative. The imide group can effectively reduce the energy level of the semiconductor molecular material, thereby improving the stability of the material, modify amines with different substituents, and effectively adjust the energy level, solubility and molecular stacking mode of the material, thereby obtaining the n-type semiconductor material with high mobility, high stability and solution processing.

The invention discloses an X-ray excitation scintillator Eu-TPC based on a low-dimensional lanthanide metal complex and a preparation method of the X-ray excitation scintillator Eu-TPC, and belongs to the technical field of lanthanide X-ray excitation scintillators. The lanthanide metal complex X-ray excitation scintillator is a one-dimensional chain-shaped molecular stacking crystal (Eu-TPC), and the chemical formula of the lanthanide metal complex X-ray excitation scintillator is (C32H23EuN6O8) x. The millimeter-scale lanthanide metal complex crystal is synthesized and obtained through a solvothermal method and has excellent X-ray excitation luminescence performance. Under X-ray radiation, the characteristic luminescence peaks are 580nm, 592nm, 615nm, 649nm and 695nm, and respectively belong to characteristic radiation transition from 5D0 to 7FJ (J = 0, 1, 2, 3 and 4) of Eu < 3 + >. The Eu-TPC disclosed by the invention has the advantages of simple preparation process, high X-ray absorption efficiency, good stability and the like, and can be applied to the fields of biomedicine, X-ray imaging, X-ray detection and the like.

There is provided a temperature sensor element including a pair of electrodes and a temperature-sensitive film disposed in contact with the pair of electrodes, in which the temperature-sensitive film includes a matrix resin and a plurality of conductive domains contained in the matrix resin, and the matrix resin constituting the temperature-sensitive film has a degree of molecular packing of 40% or more, as determined based on measurement by an X-ray diffraction method, according to expression (i): Degree of molecular packing (%)=100×(Area of peak derived from ordered structure)/(Total area of all peaks).