Efficient green light-emitting polymer by balanced injection of electron and hole: new electron accepting perfluorinated substituent

被引：22

作者：

Jang, MS ^{[1
]}

Song, SY ^{[1
]}

Shim, HK ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem, Yusung Ku, Taejon 305701, South Korea

来源：

POLYMER | 2000年 / 41卷 / 15期

关键词：

electroluminescence; perfluorinated; poly(1,4-phenylenevinylene) derivative;

D O I：

10.1016/S0032-3861(99)00788-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We synthesized a new electron withdrawing group, perfluorinated aryl substituted PPV derivative via Wessling-Zimmerman polymerization in methanol. The synthesized precursor of poly[2-{(2,3,4,5,6-pentafluorobenzene)-2,3,5,6,-tetraflourophenyl}-1,4-phenylenevinylene] (PPFPV) showed good solubility in common organic solvents such as chloroform, methylenechloride, xylene, tetrahydrofuran. The molar mass measured by gel permeation chromatography (GPC) was M-w = 72,000. PPFPV showed the PL and EL emission maxima of 520 nm corresponding to green light, because of the strong electron-withdrawing effect: of the perfluorinated aryl group. The PPFPV single layer EL device showed 64 times higher EL efficiency than that of PPV with higher turn-on voltage. But, ITO/PPV/PPFPV/Al bilayer EL device showed about 380-fold higher EL efficiency compared with PPV, and its turn-on voltage was lowered to the PPV level. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：5675 / 5679

页数：5

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