174results about "Pyrene dyes" patented technology

An organic EL material-containing solution contains an organic EL material, a solvent and a viscosity control agent. The organic EL material contains a host and a dopant.The host is a compound shown by Formula (1) below and has a solubility of 2 wt % or higher in the solvent. The solvent is an aromatic solvent, while the viscosity control agent is an alcohol type solution or an alkyl-substituted aromatic solution having 4 or more carbon atoms.

A material for electroluminescence devices comprising an aromatic amine derivative having a specific structure having bulky substituents at end portions and an organic electroluminescence device comprising an organic thin film layer which comprises a single layer or a plurality of layers comprising at least a light emitting layer and is disposed between an anode and a cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices singly or as a component of a mixture. The electroluminescence device having a long life and exhibiting a great luminance of emitted light and a great efficiency of light emission can be obtained by using the material.

The present invention provides a white color organic electroluminescence device including: a cathode; an anode; and one or more organic thin film layers including at least a light emitting layer, the one or more organic thin film layers being sandwiched between the cathode and the anode, in which the light emitting layer is constituted of a laminate of a bluish color light emitting layer and a yellow-to-reddish color light emitting layer, and the light emitting layer contains an asymmetric compound containing a condensed ring. This white color organic EL device realizes reduced chromaticity changes, excels in efficiency of light emission and thermal stability, and ensures strikingly prolonged lifetime.

Materials for organic electroluminescence devices represented by following general formula [1]: wherein A represents a substituted or unsubstituted arylene group having 22 to 60 carbon atoms, X1 to X4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X1 and X2 may be bonded to each other, X3 and X4 may be bonded to each other, Y1 to Y4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, when the arylene group represented by A has 26 or less carbon atoms, a+b+c+d>0 and the arylene group does not contain two or more anthracene nucleus;general formula [2] being: wherein R1 to R4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R1 and R2 or R3 and R4, Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.

A light-emitting material which serves to emit light having a high brightness and is almost free of deterioration in light emission, and an organic EL device for which the light-emitting material is adapted, the material having the formula [1],

Materials for organic electroluminescence devices are represented by following general formula [1]: general formula [1]wherein A represents a chrysene group X1 to X4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X1 and X2 may be bonded to each other, X3 and X4 may be bonded to each other, Y1 to Y4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, a+b+c+d≧0; general formula [2] being: general formula [2]wherein R1 to R4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R1 and R2 or R3 and R4, Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.

The present invention provides ratiometric fluorescent pH sensors for non-invasive, continuous monitoring of pH in such applications as fermentation processes. The ratiometric fluorescent pH sensors comprise a fluorescent dye that exhibits a shift in excitation wavelength with a corresponding shift in pH in the local environment of said fluorescent dye. Ratiometric measurements of the emission intensities at dual excitation maxima correlate to pH. Also provided is a fluorescent dye 6-methacryloyl-8-hydroxy-1,3-pyrene disulfonic acid (MA-HPDS). Further provided are systems and methods to non-invasively and continuously monitor pH.

An organic electroluminescence device containing an anode, an emitting layer, a blocking layer, an electron-injecting layer and a cathode in sequential order; wherein the emitting layer contains a host and a dopant which gives fluorescent emission of which the main peak wavelength is 550 nm or less; the affinity Ad of the dopant is smaller than the affinity Ah of the host; the triplet energy ETd of the dopant is larger than the triplet energy ETh of the host; the triplet energy ETb of the blocking layer is larger than ETh; the affinity Ab of the blocking layer and the affinity Ae of the electron-injecting layer satisfies Ae−Ab≦0.2 eV; and the electron mobility of the material constituting the blocking layer is 10−6 cm2 / Vs or more in an electric field intensity of 0.04 to 0.5 MV / cm.

The development of fluorescent bioprobes comprising organic fluorescent compounds that exhibit aggregation induced emission (AIE) properties, methods of producing the same, and their practical applications for in vitro and in vivo bioimaging.

An organic electroluminescence device including at least an anode, an emitting layer, an electron-transporting region and a cathode in sequential order, wherein the emitting layer contains a host and a dopant which gives fluorescent emission of which the main peak wavelength is 550 nm or less; the affinity Ad of the dopant is equal to or larger than the affinity Ah of the host; the triplet energy ETd of the dopant is larger than the triplet energy ETb of the host; and a blocking layer is provided within the electron-transporting region such that it is adjacent to the emitting layer, and the triplet energy ETb of the blocking layer is larger than ETh.

The invention provides a novel class of reactive fluorescent agents that are based on a pyrene sulfonic acid nucleus. The agents are readily incorporated into conjugates with other species by reacting the reactive group with a group of complementary reactivity on the other species of the conjugate. Also provided are methods of using the compounds of the invention to detect and / or quantify an analyte in a sample. In an exemplary embodiment, the invention provides multi-color assays incorporating the compounds of the invention.

An organic luminescent medium including an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (I):

Disclosed is an organic electroluminescent device including a first electrode, a second electrode, and a light-emitting layer having a guest material of a red luminescent material and at least two host materials so as to be formed between the first and second electrodes. One of the host materials is a composite including the following structural formula:Moreover, one of the host materials can be a substituted or non-substituted quinoline derivative.

A luminescent ink composition for an organic EL device which can form thin films by a wet process easily due to a high solubility of a low-molecular material is provided in order to form an organic thin film containing a luminescent low-molecular material by a wet method with a high productivity. A luminescent ink composition for an organic electroluminescent device comprising: (A) an anthracene derivative represented by the following formula (1); (B) a condensed aromatic ring compound substituted with an arylamino group and / or a styryl derivative substituted with an arylamino group; and (C) an organic solvent.

The present invention provides ratiometric fluorescent pH sensors for non-invasive, continuous monitoring of pH in such applications as fermentation processes. The ratiometric fluorescent pH sensors comprise a fluorescent dye that exhibits a shift in excitation wavelength with a corresponding shift in pH in the local environment of said fluorescent dye. Ratiometric measurements of the emission intensities at dual excitation maxima correlate to pH. Also provided is a fluorescent dye 6-methacryloyl-8-hydroxy-1,3-pyrene disulfonic acid (MA-HPDS). Further provided are systems and methods to non-invasively and continuously monitor pH.

An organic electroluminescence device sequentially includes an anode, a first organic layer, a second organic layer, and a cathode, the first organic layer including a monoanthracene derivative shown by a formula (1) and a fused aromatic amine derivative shown by a formula (2), and the second organic layer including a heterocyclic derivative shown by a formula (3).

An organic EL device includes: an anode for injecting holes; a phosphorescent-emitting layer; a fluorescent-emitting layer; and a cathode for injecting electrons. The phosphorescent-emitting layer contains a phosphorescent host and a phosphorescent dopant for phosphorescent emission. The fluorescent-emitting layer contains a fluorescent host and a fluorescent dopant for fluorescent emission. The phosphorescent host has a substituted or unsubstituted polycyclic fused aromatic skeleton and has a triplet energy gap of 2.0 eV to 3.0 eV.

Disclosed is an aromatic diamine derivative represented by the following general formula (I), which has a chrysene structure in which a phenyl group having a substituted or unsubstituted silyl group is a substituent for an amino group. Also disclosed is an organic electroluminescence device including an organic thin film layer formed of one or more layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the aromatic diamine derivative by itself or as a component of a mixture, the device having a long lifetime and high luminous efficiency. (In the formula, R1 to R10 each independently represent a hydrogen atom, an alkyl group having 1 to 50 carbon atoms, or the like, and R11 represents a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms or the like, and at least one of A, B, and C represents a substituted or unsubstituted silyl group, and the others each represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or the like, a, b, c, and d each independently represent an integer of 1 to 5.)

An organic electroluminescence device including an anode, an emitting layer, a blocking layer, an electron-injecting layer and a cathode in sequential order; wherein the emitting layer contains a host and a dopant which gives fluorescent emission of which the main peak wavelength is 550 nm or less; the affinity Ad of the dopant is smaller than the affinity Ah of the host; the triplet energy ETd of the dopant is larger than the triplet energy ETh of the host; the triplet energy ETb of the blocking layer is larger than ETh; and the blocking layer includes an aromatic hydrocarbon compound.

An organic compound comprising a complex fluorene structure represented by one of the following formulas: wherein:X1, X2, X3, and X4 are individually the same or different and include a moiety containing CH or N; R1, R2, R3, and R4 are substituents each being individually hydrogen, or alkyl, or alkenyl, or alkynyl, or alkoxy of from 1 to 40 carbon atoms; aryl or substituted aryl of from 6 to 60 carbon atoms; or heteroaryl or substituted heteroaryl of from 4 to 60 carbons; or F, Cl, or Br; or a cyano group; or a nitro group; or R3, or R4 or both are groups that form fused aromatic or heteroaromatic rings.

The present invention relates to an organic thin-film light emitting device containing an organic compound represented by formula (1) and a donor compound. the light emitting device ca achieve both of the low-voltage driving operation and high luminance efficiency.YA1-Ar)n<sup2>1< / sup2>  (1)(Y represents either substituted or unsubstituted pyrene, or substituted or unsubstituted anthracene. A1 is selected from the group consisting of a single bond, an arylene group, and a hetero arylene group. Ar is selected from the group consisting of a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group. These groups may be substituted or unsubstituted, and n1 is an integer of 1 to 3.)

An organic electro-luminescent device exhibiting an excellent heat resistance, a long serving life and a great efficiency of light emission and producing a light emission ranging from a blue light to a red light. The organic electroluminescent device comprising one or more thin-film layers which contain at least a light emitting layer and are interposed between a cathode and an anode, wherein the light emitting layer contains an amine compound represented by any of the following general formula (A) and a fluorene-based compound represented by any of the following general formula (B).

A light-emitting material which serves to emit light having a high brightness and is almost free of deterioration in light emission, and an organic EL device for which the light-emitting material is adapted, the material having the formula (1) disclosed in claim 1, 2 or 3.

An organic electroluminescent element is provided that has high luminous efficiency, and a slow luminance deterioration rate in the initial stage of lighting. The organic electroluminescent element includes a substrate; a pair of electrodes including an anode and a cathode, disposed on the substrate; and at least one organic layer including a light emitting layer, disposed between the electrodes, wherein at least one organic layer includes a compound represented by the general formula (1). (R11 to R15 represent hydrogen atoms, alkyl groups, or silyl groups, and any one of R21 to R24 represents a group represented by general formula (1A) or (1B). Ph4 represents a p-phenylene group, and at least one of Ph4a and Ph4b represents a p-phenylene group.)

The invention discloses a blue light organic electroluminescence device. The device comprises a pair of electrodes and an organic luminous medium layer arranged between the electrodes, wherein the organic luminous medium layer at least comprises a luminous layer and an electron transmission layer, the luminous layer comprises a host material and a guest material, the hole mobility of the guest material is 10<-3>--10<-6>cm<2>V<-1>s<-1>, and the hole mobility of the guest material is 1 to 3 magnitude orders greater than electron mobility; the electron mobility of the electron transmission material is more than or equal to 10<-4>cm<2>V<-1>s<-1>; and the energy gap (Eg) of the guest material is 2.82-2.53eV. The organic electroluminescence device has the advantages of high efficiency, good chromaticity and long service life.