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Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, organic EL lighting, and manufacturing method for organic electroluminescent element

專利號
US12133453B2
公開日期
2024-10-29
申請人
Mitsubishi Chemical Corporation（JP Tokyo）
發(fā)明人
Yanjun Li; Tomokazu Umemoto; Hideki Gorohmaru; Koichiro Iida; Kouji Adachi
IPC分類
H01L51/50; C08G73/02; C09K11/06; H10K85/10; H10K50/11; H10K50/15; H10K50/17; H10K71/00; H10K71/12; H10K85/60
技術領域
group,ring,polymer,aromatic,preferably,formula,layer,or,compound,in
地域： Tokyo

摘要

Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer. The polymer contains a repeating unit represented by the following Formula (1) or a repeating unit represented by the following Formula (2) (wherein, Ar1 and Ar2 each represent an aromatic hydrocarbon group optionally having a substituent, or an aromatic heterocyclic group optionally having a substituent; X represents —C(R7)(R8)—, —N(R9)—, or —C(R11)(R12)—C(R13)(R14)—; R1 and R2 as well as R3 and R6 each independently represent an alkyl group optionally having a substituent; R4 and R5 each independently represent an alkyl group optionally having a substituent, an alkoxy group optionally having a substituent, or an aralkyl group optionally having a substituent; and R7 to R9 and R11 to R14 each independently represent hydrogen, an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, or an aromatic hydrocarbon group optionally having a substituent).

說明書

>95% Polymer 6 >95% >95% Polymer 7 100% Polymer 8 >95% >95% Polymer 9 >95% >95%

As shown in Table 2, it was demonstrated that the organic films of the polymers 1, 3 to 7, 8 and 9 did not dissolved in cyclohexylbenzene and butyl benzoate after being heat-treated and, therefore, can be formed by a wet process.

<Solubility Test>

For the polymer 8 synthesized above, the solubility in toluene was tested at room temperature (25° C.). As a result, the polymer 8 was found to have a solubility of not less than 5% by mass in toluene at room temperature (25° C.).

Example 2-1

An organic electroluminescent element having the configuration illustrated in the FIGURE was produced in the following manner.

On a glass substrate 1 on which a transparent conductive film of indium-tin oxide (ITO) had been deposited at a thickness of 70 nm (sputtered film article, manufactured by Sanyo Vacuum Industries Co., Ltd.), 2 mm-wide stripes were patterned by a combination of an ordinary photolithography technique and hydrochloric acid etching to form an anode 2, whereby an ITO substrate was obtained.

權利要求

1
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