Organic electroluminescent element material and organic electrol

Details Organic electroluminescent element material and organic electrol Organic electroluminescent element material and organic electrol

1998-05-29

2000-11-07

Yamnitzky, Marie

Stock material or miscellaneous articles

Composite

Of inorganic material

428917, 313502, 313504, 313506, H05B 3314

Patent

active

061434345

ABSTRACT:
An organic electroluminescent element material, which is a compound represented by the following formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents a hydrogen atom or a substituent; Z represents a group of atoms necessary for forming a five- or six-membered ring; R.sub.0 represents an aliphatic hydrocarbon group, an aryl group, or a heterocyclic group; n represents 0 or 1; L.sub.1 and L.sub.2 each represents a methine group or a substituted methine group, provided that plural L.sub.1 's, plural L.sub.2 's, or L.sub.1 and L.sub.2 as a whole may form a four- to six-membered ring formed through substituents thereof; m represents 0, 1, 2, or 3; Q represents a hydrogen atom, an aliphatic hydrocarbon group, an aryl group, or a heterocyclic group, provided that Q may be bonded to R.sub.0 to form a ring; X.sup.- represents an anion; and r represents an integer of 0 or larger, provided that r is 0 when the compound forms an intramolecular salt. An electroluminescent element employing the same, which can attain a high luminance and a high luminescent efficiency at a low driving voltage and has excellent stability in repetitions of use.

REFERENCES:
patent: 4769292 (1988-09-01), Tang et al.

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