摘要:
A phosphorescent device with high brightness and a long usable life including at least an emitting layer situated between a pair of electrodes and at least one hole blocking layer in direct contact with the emitting layer, wherein the phosphorescent device employs as the hole blocking layer, a compound which can be used as a blue luminescent host material.
摘要:
Provided is a benzofluorene compound which exhibits excellent performances when applied to an organic electroluminescent device.In the benzofluorene compound, a central five-membered ring in a benzofluorene skeleton is substituted with aryl, and a benzene ring condensed to the five-membered ring is substituted with aryl, diarylamino and the like.
摘要:
A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; R1 to R4 are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5 to R8 are each independently hydrogen or a monovalent group, and one of R1 to R4 is a free valency bonded with G; and n groups of 2,3′-bipyridyl may be the same or different with each other.
摘要翻译:由下式(1)表示的化合物可用作有机EL器件的电子传输材料,并且包含电子传输层中的化合物的有机EL器件寿命长,驱动电压低:其中G为 n价连接,n为2〜4的整数, R 1〜R 4各自独立地为氢,一价基团或与G键合的自由价,R 5〜R 8各自独立地为氢或一价基团,R 1〜R 4中的一个为与G键合的自由价; 并且n个2,3'-联吡啶基可以彼此相同或不同。
摘要:
A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; R1 to R4 are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5 to R8 are each independently hydrogen or a monovalent group, and one of R1 to R4 is a free valency bonded with G; and n groups of 2,3′-bipyridyl may be the same or different with each other.
摘要翻译:由下式(1)表示的化合物可用作有机EL器件的电子传输材料,并且包含电子传输层中的化合物的有机EL器件寿命长,驱动电压低:其中G为 n价连接,n为2〜4的整数, R 1〜R 4各自独立地为氢,一价基团或与G键合的自由价,R 5〜R 8各自独立地为氢或一价基团,R 1〜R 4中的一个为与G键合的自由价; 并且n个2,3'-联吡啶基可以彼此相同或不同。
摘要:
A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; R1 to R4 are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5 to R8 are each independently hydrogen or a monovalent group, and one of R1 to R4 is a free valency bonded with G; and n groups of 2,3′-bipyridyl may be the same or different with each other.
摘要翻译:由下式(1)表示的化合物可用作有机EL器件的电子传输材料,并且包含电子传输层中的化合物的有机EL器件寿命长,驱动电压低:其中G为 n价连接,n为2〜4的整数, R 1〜R 4各自独立地为氢,一价基团或与G键合的自由价,R 5〜R 8各自独立地为氢或一价基团,R 1〜R 4中的一个为与G键合的自由价; 并且n个2,3'-联吡啶基可以彼此相同或不同。
摘要:
A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; R1 to R4 are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5 to R8 are each independently hydrogen or a monovalent group, and one of R1 to R4 is a free valency bonded with G; and n groups of 2,3′-bipyridyl may be the same or different with each other.
摘要翻译:由下式(1)表示的化合物可用作有机EL器件的电子传输材料,并且包含电子传输层中的化合物的有机EL器件寿命长,驱动电压低:其中G为 n价连接,n为2〜4的整数, R 1〜R 4各自独立地为氢,一价基团或与G键合的自由价,R 5〜R 8各自独立地为氢或一价基团,R 1〜R 4中的一个为与G键合的自由价; 并且n个2,3'-联吡啶基可以彼此相同或不同。
摘要:
The subject of the present invention is to provide an emission material which contributes to high emission efficiency, low drive voltage, excellent heat resistance and long life in an organic electroluminescent device, particularly an emission material which is excellent in emission of blue color. Further, the subject is to provide an organic electroluminescent device using the above emission material. The above subjects can be achieved by an emission material represented by Formula (1) and an organic electroluminescent device comprising the same. wherein R1 to R7 are independently hydrogen, alkyl or cycloalkyl; Ar1 is one selected from the group consisting of non-condensed aryl having 6 to 50 carbon atoms, 2-naphthyl, 9-phenanthryl, 6-chrysenyl, 2-triphenylenyl, 2-fluorenyl, 9-carbazolyl, 2-thienyl and 2-benzothienyl; and Ar2 and Ar3 are independently non-condensed aryl having 6 to 50 carbon atoms, condensed aryl having 10 to 50 carbon atoms or heteroaryl having 2 to 50 carbon atoms.
摘要:
A charge transporting material, a light emitting material and an organic electroluminescent device having high efficiency using a specified diazapentacene derivative represented by the following general formula (1): (in the general formula (1), R1 to R10 each represents independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbon atoms, an alkoxy group, a substituted or not-substituted amino group, an aryl group or a heterocyclic group, in which the substituted or not-substituted aryl group or heterocyclic group, when they are adjacent with each other, may be of a structure condensed to each other, X1 and X2 each represents independently an oxygen atom or a sulfur atom, and Y1 and Y2 each represents independently a substituted or not-substituted alkyl group of 1 to 6 carbon atoms, an aryl group or a heterocyclic group).
摘要:
To provide a luminescent material, especially one superior in blue light emission, which is used in an OEL device and allows the device to have higher luminescence efficiency, lower driving voltage, better thermal resistance and longer lifetime, as well as to provide an OEL device using the luminescent material. SOLUTION: A new luminescent material having an asymmetric structure with a basic anthracene skeleton is provided: In formula (1), each of R1—R4 represents hydrogen, a C1-C24 alkyl group or a C1-C24 alkoxy group. Each of A1-A5 represents hydrogen, a C1-C24 alkyl group or a C3-C24 cycloalkyl group. Each of B1 and B2 represents hydrogen, a C6-C24 aryl group, a C1-C24 alkyl group or a C3-C24 cycloalkyl group. Each of X1—X5 represents hydrogen, a C1-C24 alkyl group or a C3-C24 cycloalkyl group.
摘要:
An electroluminescence element (EL) obtained by using a silacyclopentadiene derivation expressed by the general formula (I) and the derivative are provided. ##STR1## (wherein X and Y are independently hydrocarbon radicals with from 1 to 6 atoms and R.sub.1 to R.sub.4 are hydrogen, halogens, alkyl radicals with from 1 to 6 carbon atoms, or a condensed (un)substituted ring if being adjacent).