44results about How to "Conjugate plane large" patented technology

The invention discloses a fluorescent probe: a benzothiazole-terpyridine compound used for distinguishing and detecting zinc ions and cadmium ions. The probe has a structural formula as shown in (I). The compound is prepared by using bromobenzaldehyde and O-aminothiophenol as raw materials, and performing a dehydration cyclization reaction, a coupling reaction and a terpyridine derivative reaction. According to the invention, the raw materials are cheap and easily available, a synthesis route is simple, a yield is relatively high, and the fluorescent probe is high in fluorescence quantum efficiency, and relatively high in heat stability and dissolvability. The probe uses a photoinduced charge transfer mechanism, has different luminescence response for the zinc ions and the cadmium ions, has characteristics of rapid response, high sensitivity and high selectivity, is suitable for food safety inspection, laboratory safety inspection, and especially industrial wastewater monitoring, and has a wide application prospect in environment monitoring, ecological protection, disease diagnosis, industrial production and sewage inspection.

The invention discloses a benzothiazole-aniline compound used as a pH fluorescent probe and a preparation method thereof. The structural formula is shown as a chemical formula (shown in the description) (I), wherein in the formula, R1 is vinyl, acetenyl, styryl, phenylethynyl, biphenyl or perylene base; and R2 and R3 are both hydrogen, methyl or ethyl alkane. The preparation method comprises the following steps of: taking p-bromobenzaldehyde and 2-aminothiophenol as raw materials, and connecting with iodine-containing nitrobenzene derivative through dehydration cyclization reaction and coupling reaction; and generating the pH fluorescent probe benzothiazole-aniline derivative through reductive amination. Rigid structures, such as benzothiazole and phenylethynyl, are introduced into the fluorescent probe; the fluorescent probe is high in fluorescence quantum efficiency, and high in thermal stability and solubility. The probe can detect pH value under strong acid condition by adopting a photoinduced charge transfer mechanism and a conjugate passivation mechanism; and the probe has the characteristics of rapid response, high sensitivity and high selectivity, and has wide application prospect in environment monitoring, ecological protection, disease diagnosis, industrial production and sewage inspection.

The invention provides a novel compound which is represented by the formula (I), wherein the R1 to R5 are independently selected from a C1-C20 aliphatic alkyl group or a C6-C20 aromatic group; the Ar is selected from: a C4-C30 aromatic ring, a C4-C30 N-containing heterocycle, a C4-C30 condensed heterocyclic aromatic hydrocarbon, a C4-C30 aromatic amino group, or a C4-C30 aromatic oxy group; n is 1 or 2; A1 to A4 represent N atoms or C atoms, when the A1 and A3 represent N atoms at the same time, the A2 and A4 represent C atoms; or when the A1 and A4 represent N atoms at the same time, the A2 and A3 represent C atoms; or when the A2 and A4 represent N atoms at the same time, the A1 and A3 represent C atoms; or when the A3 and A4 represent N atoms at the same time, the A1 and A2 represent C atoms; or when the A1, A3, and A 4 represent N atoms at the same time, the A2 represents a C atom; and L represents a single bond, or a C6-C10 aromatic ring, or a C4-C10 N-containing heterocycle. The compounds are used as an electron transmission layer material or a luminous main material in organic electroluminescence devices.

The invention provides a fused ring non-fullerene acceptor material, and a preparation method and an application thereof. The fused ring non-fullerene acceptor material comprises an electron donatingunit and electron withdrawing end groups, the electron donating unit is a carbon-oxygen bridge trapezoidal fused ring structure, the electron withdrawing end groups are connected to two ends of the electron donating unit, and the fused ring non-fullerene acceptor material has a structure represented by formula I or formula II. The prepared fused ring non-fullerene acceptor material prepared through the preparation method has excellent light absorption and carrier transport properties, can be easily dissolved in common organic solvents, has strong visible near-infrared absorption property and high electron mobility (being more than or equal to 10<-5> cm<2>.V<-1>.s<-1>), realizes a high short-circuit current and a high energy conversion efficiency in organic solar cells, and has a broad application prospect and high application values.

The invention relates to 2, 6-di(aryl)-anthraquinone and a preparation method thereof, the preparation method comprises the following steps: connecting electron donor or electron acceptor groups to the two sides of an anthraquinone ring in the 2 and 6 positions, and enabling a 2, 6-dibromo anthraquinone type derivative and a substituent group containing a vinyl group to generate an Heck reaction in alkaline conditions under the catalytic action of palladium acetate and tri-O-methoxy phosphorus for generating the 2, 6-di(aryl)-anthraquinone, and the general formula of the molecular structure of the 2, 6-di(aryl)-anthraquinone is shown in the specification, wherein R is the substituent group containing the vinyl group, the electron donor group or the electron acceptor group. As the compound has the larger conjugate plane and simultaneously has better photochemical stability, thermal stability and solubility, the compound can better capture multiple photons and excite the generation of multi-photon absorption and nonlinear absorption phenomena, and further meet the application requirements in the aspects of photoelectric conversion materials, nonlinear absorption materials and the like.

The invention provides a novel organic light-emitting material. The novel organic light-emitting material is used for a light-emitting main body material and an electron transport layer material of anorganic light-emitting device. The invention also provides an organic light-emitting device comprising the novel organic light-emitting material.

The invention provides a D-A type conjugated polymer containing a condensed ring lactone, and a preparation method and an application thereof. The structural formula of the D-A type conjugated polymercontaining the condensed ring lactone is represented by formula I. The condensed ring lactone group is introduced to the conjugated main chain of a polymer, so the molecular conjugate plane of the polymer is widened, the intermolecular pi-pi stacking interaction is promoted, and the intermolecular steric hindrance of the polymer is reduced. The D-A type conjugated polymer containing the condensedring lactone has the advantages of good solubility, good photoelectric properties, excellent light absorption and carrier transport performances, and realization of a high short circuit current and ahigh energy conversion efficiency in organic solar batteries.

The invention discloses benzothiazole-triphenylamine dye with an AIE effect and a preparation method and application thereof. The preparation method of the benzothiazole-triphenylamine dye comprises the steps that benzothiazole-2-acetonitrile and diphenyl amino-4-benzaldehyde are dissolved into absolute ethyl alcohol, ammonium acetate is added, and reacting under stirring is conducted at room temperature; a coarse product is obtained through filtering, and the pure benzothiazole-triphenylamine dye is obtained through recrystallization. According to the benzothiazole-triphenylamine dye, a cyanide ion detection method which is high in selectivity and sensitivity, is not disturbed by other negative ions, can achieve the detection limit as low as the ppm level and is low in detection cost and convenient and fast to operate can be achieved through an aqueous solution, and the problems that in the cyanide ion detection field, the cost is high, operation is complex, and detection is insensitive can be solved.

The invention provides a novel organic light-emitting material which is used as a light-emitting main body material and an electron transport layer material of an organic light-emitting device. The invention also provides the organic light-emitting device which comprises the novel organic light-emitting material provided by the invention.

The invention relates to a tetra-branched rare earth complex and a preparation method thereof. The complex is prepared through complexing reaction of three ligands, namely two M1s and one M2 by taking a trivalent rare earth ion as a central ion. The chemical formula of the complex is Ln(M1)2M2, wherein Ln is the rare earth ion; M is the ligands consisting of M1 and M2; M1 is a monocarboxylic compound synthesized by a tetratomic alcohol compound and an aliphatic or aromatic dicarboxylic compound; M2 is 1,10-phenanthroline; and a ligand solvent is dimethyl sulfoxide or N,N-dimethyl formamide. The rare earth complex of the invention has a network pore structure, bigger conjugate plane, better rigid structure and structural stability, and more coordinative rare earth ions. A rare earth polymer luminescent material synthesized by the tetra-branched rare earth complex has no phenomenon that ions are accumulated to form ion clusters so as to cause fluorescent quenching, and can effectively perform high-efficiency photon switching to enhance the luminescent efficiency of the complex.

The invention discloses a novel HIT and EB material matched organic light-emitting device, which is sequentially provided with a substrate, a first electrode, an organic functional material layer anda second electrode from bottom to top, and is characterized in that the organic functional material layer comprises: a hole transport region located on the first electrode; a light-emitting layer overthe hole transport region, the light-emitting layer including a host material and a guest material; and an electron transmission region which is located on the light-emitting layer. The hole transport region sequentially comprises a hole injection layer, a hole transport layer and an electron blocking layer from bottom to top, the hole injection layer comprises a hole transport layer material anda P-type doped material, and the hole transport layer comprises an organic compound containing dimethyl fluorenyl in the structure. The electron blocking layer comprises an organic electroluminescentdevice having improved luminous efficiency and lifespan, and a display comprising the same, and more particularly, to an organic electroluminescent device having improved luminous efficiency and lifespan, and an electronic device comprising the same.

The invention discloses a condensed ring aromatic amine compound and an organic electroluminescent display device comprising the same, and belongs to the technical field of organic electroluminescent materials. The condensed ring aromatic amine compound has a structure represented by the formula, wherein A and B respectively have structures represented by the formulas defined in the specification, L1, L2 and L3 are respectively and independently selected from a single bond, substituted or unsubstituted arylene with the ring-forming carbon atom number of 5-60 and substituted or unsubstituted heteroarylene with the ring-forming carbon atom number of 5-60, and X is independently selected from O, C, N or S atoms; and at least any two adjacent groups of R1 to R16 and R17 to R20 are bonded to each other to form a ring structure. The condensed ring aromatic amine compound has a large conjugate plane, the stability of the compound can be improved, an organic electroluminescent display device obtained by adopting the compound as a hole transport layer material can reduce the problem of crosstalk of light emitting display, the driving voltage is low, and the service life is long.

The invention relates to a compound, application thereof and an organic light-emitting device comprising the compound. The compound has a structure as shown in the following formula (1), wherein X isselected from O, S or Se; L1 is selected from substituted or unsubstituted arylene groups of C6-C30; Ar1-Ar3 are each independently selected from one of a substituted or unsubstituted C6-C30 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group, and R1 to R3 each independently represent a monosubstituted group to a maximum permissible substituent group, and each is independently selected from one of hydrogen, C1-C30 alkyl, C1-C30 alkoxy, halogen, cyano, nitro, hydroxyl, silyl, amino, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. When the compound provided by the invention is used as a hole transport layer material or an electronblocking layer material in an OLED device, excellent device performance and stability are shown. The invention also discloses an organic light-emitting device adopting the compound with the general formula.

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to a thieno thiophene fused heterocyclic organic compound and application thereof. The organiccompound provided by the invention has a thieno thiophene fused heterocyclic parent structure, has high bond energy between atoms, has good thermal stability, is beneficial to intermolecular solid accumulation, and can effectively prolong material service life when being used as a luminescent layer material. The compound provided by the invention is a derivative of a large conjugated fused heterocycle, is applied to a light emitting layer, has a proper energy level with adjacent levels, is beneficial to injection of holes and electrons, can effectively reduce turn-on voltage, and can realizegood light emitting efficiency in a device due to a relatively high exciton migration rate. The compound disclosed by the invention has a relatively large conjugate plane, is beneficial to molecular accumulation, shows good thermodynamic stability and shows long service life in a device. The preparation process of the derivative is simple and feasible, raw materials are easy to obtain, and the derivative is suitable for large-scale production.

The present invention belongs to the field of chemical industry, and particularly relates to a fluorescent probe for detecting heavy metal ions in industrial wastewater, and a preparation method thereof. The dispersed "branched structure" of 1,2,4,5-tetrafluorobenzene is used to make a polymer II have a hyperbranched structure, so the self-quenching phenomenon caused by pi-pi stacking is effectively avoided, and the fluorescent probe can efficiently emit fluorescence after being combined with the heavy metal ions, thereby the fluorescent probe has the basic conditions for being used as a heavy metal ion fluorescent probe. In addition, the special C=N structure of a Schiff base makes fluorescent probe complex with positively charged metal ions, so complexation further enlarges the conjugate plane and increases the fluorescence intensity, thereby the presence of heavy metal ions is detected.

The invention provides an undoped small organic molecule hole transport material as well as a preparation method and application thereof, and relates to the technical field of photoelectric materials. According to the undoped small organic molecule hole transport material, benzene ring substituted benzodithiophene is used as a central core, thiophene bithienosilole is used as a pi bridge, rhodanine is used as an end group, benzene rings are added on side chains of the central core, the conjugacy of molecules is improved, formation of an intermolecular pi-pi stacking structure is facilitated, and the hole transport efficiency is improved. Thienyl thienosilole contains a long C-Si bond, so that steric hindrance is reduced, intermolecular pi-pi accumulation is further promoted, and more ordered orientation is generated. The undoped small organic molecule hole transport material has relatively strong hole capability and relatively strong capability of absorbing light in a green light wavelength range, can remarkably improve the hole mobility, and can obtain relatively high photoelectric conversion efficiency and relatively strong stability when being applied to a perovskite solar cell.

The invention provides a per-furan framework donor-receptor conjugated polymer and a preparation method thereof as well as an organic solar cell made of the per-furan framework donor-receptor conjugated polymer. The structural formula of the polymer is shown in the description, wherein EH is shown in the description, and n is 24-25. The prepared polymer PBDFFPD is high in conjugate plane, high inin-molecule and inter-molecule mutual action, and low in HOMO energy level; a PBDFTD:ITIC based organic solar cell has 9.30% of photoelectric conversion efficiency under the collaborative processing of chloronaphthalene and methyl alcohol, and FF is up to 70.3%, so that the top record of the photoelectric conversion efficiency of an FTD based polymer organic solar cell is reached. In addition, thedeviation between the average efficiency and the maximum efficiency of a 20 battery under the optimal condition of the PBDFTD:ITIC cell is kept at 0.64%, so that the PBDFFTD is high in potential to prepare an efficient organic solar cell, and the operation is free from strict requirements; the polymer is suitable for popularization.