- Pyrene structure-containing compound, and organic luminescent device thereof
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The invention discloses a pyrene structure-containing compound, and an organic luminescent device thereof. The pyrene structure-containing compound is formed through combination of a pyrene ring structure with a fluorene alkenyl; on one hand, a foldable three dimensional structure is achieved, so that certain distortion of the pyrene structure-containing compound in the space three-dimensional structure is realized, and the film forming performance is improved; on the other hand, the pyrene structure possesses relatively high triplet state energy level and relatively wide energy gap, and excellent blue light performance, when the pyrene ring structure is connected with fluorene alkenyl with electron withdrawing performance, green light or red light is emitted after bathochromic shift. Thepyrene structure-containing compound possesses appropriate HOMO and LUMO values, is capable of blocking transmission from cavities to electron transmission layers, and improving effective luminescence. When the pyrene structure-containing compound is applied in organic luminescent devices, the pyrene structure-containing compound is taken as a luminescent layer or a cavity blocking layer, low driving voltage and high luminescent efficiency of the organic luminescent devices are achieved.
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- Semiconducting Material Comprising a Phosphine Oxide Matrix and Metal Salt
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The present invention is directed to a semiconducting material comprising: i) a compound according to formula (I) wherein R1, R2 and R3 are independently selected from C1-C30-alkyl, C3-C30 cycloalkyl, C2-C30-heteroalkyl, C6-C30-aryl, C2-C30-heteroaryl, C1-C30-alkoxy, C3-C30-cycloalkyloxy, C6-C30 aryloxy, and from structural unit having general formula E-A-, wherein—A is a C6-C30 phenylene spacer unit, and—E is an electron transporting unit that is selected from C10-C60 aryl and C6-C60 heteroaryl comprising up to 6 heteroatoms independently selected from O, S, P, Si and B and that comprises a conjugated system of at least 10 delocalized electrons, and—at least one group selected from R1, R2 and R3 has the general formula E-A-; and ii) at least one complex of a monovalent metal having formula (II) wherein—M+ is a positive metal ion bearing a single elementary charge, and each of A1, A2, A3 and A4 is independently selected from H, substituted or unsubstituted C6-C20 aryl and substituted or unsubstituted C2-C20 heteroaryl, wherein a heteroaryl ring of at least 5 ring-forming atoms of the substituted or unsubstituted C2-C20 heteroaryl comprises at least one hetero atom selected from O, S and N.
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- FLUORENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
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Disclosed is a fluorene derivative having a specific structure. Also disclosed is an organic electroluminescent device having high luminous efficiency wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer of the organic thin film layer contains the fluorene derivative of the specific structure alone or as a component of a mixture. Such an organic electroluminescent device with high luminous efficiency can be realized by this fluorene derivative.
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Page/Page column 51
(2008/06/13)
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- Synthesis of pyrene containing building blocks for dendrimer synthesis
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Efficient syntheses of the novel, pyrene containing branched building blocks 10, 13, 22, 25 and of a pyrene based core molecule 16 for the construction of dendrimers are reported. The main tool is a Suzuki cross-coupling. The functional groups for further growth are amines and carboxylic acids, which were used in an orthogonally protected fashion. It was proven that the building blocks could be assembled to a low generation dendrimer 17.
- Modrakowski,Flores,Beinhoff,Schlueter
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p. 2143 - 2155
(2007/10/03)
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