CN104059090A - 一类吡啶和咔啉衍生物的合成方法及其应用 - Google Patents

一类吡啶和咔啉衍生物的合成方法及其应用 Download PDF

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CN104059090A
CN104059090A CN201410309611.4A CN201410309611A CN104059090A CN 104059090 A CN104059090 A CN 104059090A CN 201410309611 A CN201410309611 A CN 201410309611A CN 104059090 A CN104059090 A CN 104059090A
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pyridine
carboline
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laminating
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CN104059090B (zh
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陶友田
黄维
汤超
王芳芳
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Nanjing Tech University
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    • C07D519/00Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
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    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • HELECTRICITY
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    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/654Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/657Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6572Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
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    • C09K2211/1029Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom

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Abstract

本发明开发了一种原料廉价易得,无需加入贵金属催化剂,操作简便,反应条件温和,生产成本低,产率高,便于商业化的一步法合成吡啶和咔啉系列化合物的方法,涉及有机电致发光材料领域,具体涉及一步法合成一种具有双极载流子传输性能的材料及其做为电致磷光主体在电致发光领域的应用。将兼具空穴和电子传输能力的咔啉与吸电子基吡啶相连,获得电子和空穴传输更加平衡的主体材料2,6-二咔啉基吡啶,2,4,6-三咔啉基吡啶。

Description

一类吡啶和咔啉衍生物的合成方法及其应用
技术领域
本发明涉及有机电致发光材料领域,具体涉及一步法合成一种具有双极载流子传输性能的材料及其做为电致磷光主体在电致发光领域的应用。
技术背景
1997年等在《Nature》上报道了首例以有机过渡金属配合物为发光体的有机电致磷光器件,发现电致磷光材料可同时利用单线态和三线态激子发光,其理论内量子效率可达到100%,引起了广泛关注和研究。近年来,基于磷光材料的有机电致发光二极管(OLED)由于其体积小质量轻、可挠曲、发光效率高、响应速度快等突出的优点而备受关注。然而,由于电致磷光材料本身较长的激发态寿命使得其本身存在严重的浓度淬灭和三重态-三重态湮灭效应,从而大大降低器件的发光效率和亮度。
现在的磷光电致发光器件中大多采用主客体结构,即将磷光发射物质以一定的浓度掺杂在主体物质中,以避免三重态-三重态的湮灭,提高磷光发射效率。
1999年Forrest和Thompson等[M.A.Baldo,S.Lamansky,P.E.Burroes,M.E.Thompson,S.R.Forrest.Appl Phys Let,1999,75,4.]将绿色磷光材料Ir(ppy)3以6wt%的浓度掺杂在4,4’-N,N’-二咔唑-联苯(CBP)的主体材料中,并引入了空穴阻挡层材料2,9-二甲基4,7-二苯基-1,10-邻菲罗啉(BCP),获得的绿光OLED最大外量子效率达8%,功率效率达31lm/W,均大大超过电致荧光发光器件,立即引起人们对主体材料的广泛关注。
2013年Jun Yeob Lee等[Chil Won Lee and Jun Yeob Lee Adv.Mater.2013,25,5450-5454]报导咔啉衍生物本身具有较高的三线态能级,且结构中因含有强吸电子基吡啶基团能提高主体材料的电子传输能力,将苯基咔唑与苯基咔啉通过suzuki偶联的方法获得获得双极主体材料CzBPCb,CbBPCb,通过间位连接保持较高的三线态能级,将蓝光材料Firpic与主体掺杂,器件EQE最大超过30%,是目前报导最高的蓝光磷光外量子效率。
咔啉类衍生物具有较好的电子传输性能和较高的三线态能级,由于咔啉结构中包含吡啶基团,使咔啉的电子传输能力强于咔唑,本发明中将咔啉单元和具有电子传输性能的吡啶单元以一定的方式连接,使主体的空穴和电子传输能力更加平衡,而传统方法形成碳氮键都需加入价格昂贵的贵金属催化剂,因此,本发明开发了一种原料廉价易得,无需加入贵金属催化剂,操作简便,反应条件温和,生产成本低,产率高,适合大规模生产的方法。制备了一类具有双极载流子传输性能的化合物,它们作为电致磷光器件发光层的主体材料,所制备的 蓝光器件最大电流效率高达44.2cd/A,最大能量效率38.5lm/W。
发明内容
本发明的目的在于提供一种高效、低廉、具有巨大商业价值的一步合成的方法获得具有双极载流子传输性能的材料和采用这种材料作为主体的高效电致磷光器件,该材料应用于电致磷光器件中,可获得高效的电致发光性能。
本发明所说的具有双极载流子传输性能的材料,将兼具空穴和电子传输能力的咔啉与吡啶相连,获得电子和空穴传输更加平衡的主体材料n-CbPy,结构如下所示:
具体实施方式
为了更好地理解本发明,下面通过具体的实施例来具体说明本发明的技术方案。
实施例1:2,6-二咔啉基吡啶(1)的合成
2,6-二氟吡啶(0.3g,2.6mmol),碳酸钾(2.2g,15.6mmol),咔啉(0.96g,5.7mmol),DMSO10ml,150℃加热回流12h。冷却至室温倒入200ml水中析出大量固体搅拌0.5h,抽滤得白色固体,柱层析提纯得白色固体0.75g,收率75%。1HNMR(CDCl3,400MHz):δppm8.59(d,2H,J=3.72Hz),8.46-8.41(m,4H),8.32(d,2H,J=7.76),8.24-8.20(m,1H),8.10(d,2H),7.43-7.32(m,6H).
实施例2:2,4,6-三咔啉基吡啶(2)的合成
2,4,6-三氟吡啶(0.3g,2.3mmol),其它同实例1,柱层析提纯得白色固体0.81g,收率61%。 1H NMR(CDCl3,400MHz):δppm8.95(s,2H),8.65(d,2H,J=8.40),8.59-8.57(m,3H),8.46-8.40(m,4H),8.18-8.11(m,3H),7.64(t,1H),7.49-7.31(m,8H).
表1为实施例(1)-(2)的器件数据,器件结构为:MoO3(5nm)/NPB(60nm)/TCTA(5nm)/ (1)-(2):Firpic(13%-18%,10nm)/TmPyPb(35nm)/CsCO3(2nm)。如表1所示制备的蓝光器件最大电流效率高达42.6cd/A最大能量效率37.12lm/W。
表1

Claims (9)

1.一种吡啶和咔啉类化合物,其结构式如下:
2.一种合成如权利要求1所述化合物的方法,其特征是在无需贵金属催化剂的条件下直接形成碳氮键,以及简便、高效条件温和的合成该类吡啶类化合物的通用方法,产物经多种方法检测与表征,产品纯度好,得率高,反应关键之步骤如下:
咔啉,氟代吡啶,碱,加入溶剂,氮气氛围回流5-12h,后处理直接通过乙醇重结晶或柱层析的方法分离提纯。
3.根据权利要求2所述的方法,其特征在于:所述有机溶剂为二甲亚砜或N,N-二甲基甲酰胺中的一种。
4.根据权利要求2所述的方法,其特征在于:所述碱是碳酸钾、氢氧化钠或叔丁醇钠中的一种。
5.根据权利要求1所述的化合物,兼具有空穴和电子传输性能的咔啉单元和具有电子传输性能的吡啶单元的化合物,作为蓝光磷光主体材料。
6.一种如权利要求1所述的化合物作为双极载流子传输材料的应用。
7.根据权利要求6所述的电致发光器件的应用,包括玻璃、附着在玻璃上的导电玻璃衬底层,与导电玻璃衬底层贴合的空穴注入层,与空穴注入层贴合的空穴传输层,与空穴传输层贴合的发光层,与发光层贴合的空穴阻挡层,与空穴阻挡层贴合的电子传输层,与电子传输层贴合的阴极层,其特征在于:所述发光层含有权利要求1所述的化合物。
8.根据权利要求7所述的电致发光器件,其特征在于:发光层由主体材料和掺杂材料组成,发光层的主体材料为权利要求1所述的化合物。
9.根据权利要求8所述的电致发光器件,其特征在于:掺杂材料为Firpic。
CN201410309611.4A 2014-06-27 2014-06-27 一类吡啶和咔啉衍生物的合成方法及其应用 Expired - Fee Related CN104059090B (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104387369A (zh) * 2014-10-28 2015-03-04 南京工业大学 一种热激活延迟荧光材料的合成方法及其应用
CN106810569A (zh) * 2016-07-26 2017-06-09 浙江华显光电科技有限公司 一种咔啉三取代衍生物及其应用

Citations (1)

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CN103570712A (zh) * 2012-07-31 2014-02-12 乐金显示有限公司 磷光化合物和使用该磷光化合物的有机发光二极管器件

Patent Citations (1)

* Cited by examiner, † Cited by third party
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CN103570712A (zh) * 2012-07-31 2014-02-12 乐金显示有限公司 磷光化合物和使用该磷光化合物的有机发光二极管器件

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104387369A (zh) * 2014-10-28 2015-03-04 南京工业大学 一种热激活延迟荧光材料的合成方法及其应用
CN106810569A (zh) * 2016-07-26 2017-06-09 浙江华显光电科技有限公司 一种咔啉三取代衍生物及其应用
CN106810569B (zh) * 2016-07-26 2022-07-22 浙江华显光电科技有限公司 一种咔啉三取代衍生物及其应用

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