Electroluminescence and Laser Emission of Soluble Pure Red Fluorescent Molecular Glasses Based on Dithienylbenzothiadiazole

被引：75

作者：

Huang, Ju ^{[1
]}

Liu, Quan ^{[1
]}

Zou, Jian-Hua ^{[1
]}

Zhu, Xu-Hui ^{[1
]}

Li, Ai-Yuan ^{[1
]}

Li, Jun-Wen ^{[1
]}

Wu, Sha ^{[1
]}

Peng, Junbiao ^{[1
]}

Cao, Yong ^{[1
]}

Xia, Ruidong ^{[2
,3
]}

Bradley, Donal D. C. ^{[2
,3
]}

Roncali, Jean ^{[4
]}

机构：

[1] S China Univ Technol, MOE, Key Lab Special Funct Mat, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[2] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[3] Univ London Imperial Coll Sci Technol & Med, Ctr Plast Elect, London SW7 2AZ, England

[4] Univ Angers, CNRS, CIMA, Linear Conjugated Syst Grp, F-49045 Angers, France

来源：

ADVANCED FUNCTIONAL MATERIALS | 2009年 / 19卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

LIGHT-EMITTING-DIODES; OPTICAL GAIN; CONJUGATED POLYMERS; ELECTRON-TRANSPORT; IRIDIUM COMPLEXES; DENDRIMERS; CONFINEMENT; DERIVATIVES; MORPHOLOGY; OLIGOMERS;

D O I：

10.1002/adfm.200900365

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Soluble molecular red emitters 1a/1b are synthesized by Stifle coupling from 2-(3,5-di(1-naphthyl)phenyl)thiophene precursors. The compounds show emission maxima at ca. 610 nm in CH(2)Cl(2) solution and 620 nm in solid films. Replacing the n-hexyl substituent by 4-sec-butoxyphenyl produces a marked increase of glass transition temperature (T(g)) from 82 degrees C to 137 degrees C and increases the solubility in toluene and p-xylene, thus improving to film-forming properties. Cyclic voltammetry shows that the compounds can be reversibly oxidized and reduced around +1.10 and -1.20V, respectively. A two-layered electroluminescent device based on 1b produces a pure red light emission with CIE coordinates (0.646, 0.350) and a maximal luminous efficiency of 2.1 cd A(-1). Furthermore, when used as a solution-processed red in optically pumped laser devices, compound 1b successfully produces a lasing emission at ca. 650 nm.

引用

页码：2978 / 2986

页数：9

共 43 条

[41] Triphenylamine-dendronized pure red iridium phosphors with superior OLED efficiency/color purity trade-offs [J].