Synthesis and Characterization of a New p-n Diblock Light-Emitting Copolymer.
Synthesis and Characterization of a New p-n Diblock Light-Emitting Copolymer.
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DOI：
10.1021/ma9800212
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发表时间：
1998-07
期刊：
影响因子：
5.5
通讯作者：
Wang-Lin Yu;Hong Meng;Jian Pei;Wei Huang;Yongfang Li;A. Heeger
中科院分区：
文献类型：
--
作者：
Wang-Lin Yu;Hong Meng;Jian Pei;Wei Huang;Yongfang Li;A. Heeger
本文报道了一种由3，3 ′-二癸基-2，2 ′-联噻吩和2，6-双（1，3，4-恶二唑基）甲苯组成的规则交替链段的新型发光共聚物的合成和表征。这种新型聚合物在薄膜状态下在紫外光照射下发出强烈的绿色光，并表现出很强的溶剂化变色吸收和发光。测得聚合物的n-掺杂电位与2-（4-联苯基）-5-（4-叔丁基苯基）-1，3，4-恶二唑（PBD）和其它已报道的含恶二唑的聚合物，是目前优异的电子传输材料，而其p掺杂电位远低于其它含恶二唑的发光聚合物，（对亚苯基亚乙烯基）（PPV）和聚噻吩（PT），典型的p掺杂型材料。所提出的合成揭示了一种可能的方法来平衡注入的电子和空穴从相反的接触到聚合物发光二极管的发光层的速率，通过控制发光材料的固有特性。
In this paper we present the synthesis and characterization of a new light-emitting copolymer constituted of regularly alternating segments of 3,3'-didecyl-2,2'-bithiophene and 2,6-bis(1,3,4-oxadiazolyl)toluene, which are p-dopable and n-dopable, respectively. The new polymer emits intense green light under the irradiation of UV light in its film states and shows strong solvatochromism both on absorption and on emission. The n-doping potential of the polymer is measured to be similar with that of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) and other reported oxadiazole-containing polymers, the currently excellent electron-transporting materials, while its p-doping potential is much lower than those of other oxadiazole-containing light-emitting polymers and is comparable with that of poly(p-phenylenevinylene) (PPV) and polythiophenes (PT), the typical p-dope type materials. The presented synthesis reveals a possible approach to balance the rates of injection of electrons and holes from opposite contacts into an emissive layer in polymer light-emitting diodes by controlling the intrinsic properties of light-emitting materials.