Organic electroluminescence element material and organic electroluminescence element comprising same
AssigneeFuji Photo Film Co., Ltd.
InventorsHisashi Okada, Tatsuya Igarashi, Toshiki Taguchi
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Abstract
The present invention provides an organic EL element material which can emit light having a high color purity at a low driving voltage, a high luminescence and a high efficiency and exhibits an excellent stability in repeated use. A normal organic electroluminescence element material is provided which is a heterocyclic compound produced by the condensation of a 5- or 6-membered ring with a 5- to 7-membered ring.
Claims14
An organic electroluminescence element comprising a light-emitting layer or a plurality of organic compound thin layers containing a light-emitting layer between a pair of electrodes, wherein at least one layer in the organic electroluminescence element comprises at least one heterocyclic compound represented by formula (I) to (VII).
- wherein R11, R12 and R13 each independently represents a hydrogen atom or substituent;
- and Z1 represents an atomic group required to form a imidazole, triazole, triazine, or pyrimidine ring,
- wherein R21 and R22 each independently represents a hydrogen atom or substituent;
- and Z2 represents an atomic group required to form a 5- or 6-membered ring,
- wherein R31 and R32 each independently represents a hydrogen atom or substituent;
- and Z3 represents an atomic group required to form a 5- or 6-membered ring,
- wherein R41 and R42 each independently represents a hydrogen atom or substituent;
- and Z4 represents an atomic group required to form a pyrrole, pyrazole, imidazole, triazole, thiazole, thiadiazole, oxazole, oxadiazole, triazine, pyrimidine, pyridine, pyrazine or pyridazine,
- wherein R51 represents a hydrogen atom or substituent;
- and Z5 represents an atomic group required to form a 5- or 6-membered ring,
- wherein R61 represents a hydrogen atom or substituent;
- and Z6 represents an atomic group required to form a 5- or 6-membered ring,
- wherein R71 represents a hydrogen atom or substituent;
- and Z7 represents an atomic group required to form a 5- or 6-membered ring.
Dependencies are inferred from the claim text.