Title:
HOST MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENTS, PRELIMINARY MIXTURE, AND ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2024/048535
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a practically useful organic EL element which has low voltage, high efficiency, and long service life characteristics. The present invention uses a host material for organic electroluminescent elements, the host material being represented by general formula (1). (In the formula, ring G represents an aromatic ring that is represented by formula (1a); ring H represents a heterocyclic ring that is represented by formula (1b); D represents deuterium; Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 17 carbon atoms, or a substituted or unsubstituted linked aromatic group wherein 2 to 5 aromatic rings of these aromatic groups are linked; a, b and x each represent a number of substitutions; a and b are each an integer of 0 to 4; x is an integer of 0 to 2; and (a + b + x) ≥ 1 is satisfied; m and n each represent a number of repetitions; m and n are each 0 or 1; and (m + n) is 1 or more.)
Inventors:
OGAWA JUNYA (JP)
SAKAI MITSURU (JP)
TAKAKI KOYO (JP)
IKENAGA YUJI (JP)
SAKAI MITSURU (JP)
TAKAKI KOYO (JP)
IKENAGA YUJI (JP)
Application Number:
PCT/JP2023/031041
Publication Date:
March 07, 2024
Filing Date:
August 28, 2023
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
H10K85/60; C09K11/06; H05B33/10; H10K50/10; H10K50/11; H10K71/16; H10K85/30; H10K101/20; H10K101/40
Domestic Patent References:
| WO2022015084A1 | 2022-01-20 | |||
| WO2022031036A1 | 2022-02-10 |
Foreign References:
| JP2022536452A | 2022-08-17 | |||
| KR20220015980A | 2022-02-08 |
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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