CHARGE-TRANSPORTING VARNISH

PROBLEM TO BE SOLVED: To provide a charge-transporting varnish improved in solubility and capable of providing a thin film having high flatness and excellent charge transport properties.SOLUTION: A charge-transporting varnish contains: an amine compound represented by formula (1); a charge transport...

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1. Verfasser: TAKEDA KAYO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a charge-transporting varnish improved in solubility and capable of providing a thin film having high flatness and excellent charge transport properties.SOLUTION: A charge-transporting varnish contains: an amine compound represented by formula (1); a charge transporting compound with a molecular weight of 300-5,000, having a structure where two or more divalent organic groups, which are the same or different and selected from formula (2)-formula (4), are continues; an electron-accepting material; and an organic solvent. [In the formula, Arepresents a hydrogen atom or the like, and Aand Aeach independently represent a 1-20C alkyl group or the like.] (In the formulae, Xrepresents -NY- or the like, Xrepresents -NY- or the like, Xrepresents -NY- or the like, Y-Yeach independently represent a hydrogen atom or the like, and R-Reach independently represent a hydrogen atom, a halogen atom, or the like.)SELECTED DRAWING: None 【課題】溶解性が改善され、かつ、高い平坦性および優れた電荷輸送性を有する薄膜を与え得る電荷輸送性ワニスを提供すること。【解決手段】式(1)で表されるアミン化合物と、式(2)〜(4)から選ばれる同一または異種の2価の有機基が2つ以上連続した構造を有する分子量300〜5000の電荷輸送性化合物と、電子受容性物質と、有機溶媒とを含む電荷輸送性ワニス。〔式中、A1は、水素原子等を、A2およびA3は、それぞれ独立して、炭素数1〜20のアルキル基等を表す。〕(式中、X1は、−NY1−等を、X2は、−NY2−等を、X3は、−NY3−等を表し、Y1〜Y3は、それぞれ独立して、水素原子等を表し、R1〜R12は、それぞれ独立して、水素原子、ハロゲン原子等を表す。)【選択図】なし