Core, Shell, and Surface-Optimized Dendrimers for Blue Light-Emitting Diodes

被引：109

作者：

Qin, Tianshi ^{[2
]}

Wiedemair, Wolfgang ^{[1
]}

Nau, Sebastian ^{[1
]}

Trattnig, Roman ^{[1
]}

Sax, Stefan ^{[1
]}

Winkler, Stefanie ^{[3
]}

Vollmer, Ante ^{[3
]}

Koch, Norbert ^{[3
,4
]}

Baumgarten, Martin ^{[2
]}

List, Emil J. W. ^{[1
,5
]}

Muellen, Klaus ^{[2
]}

机构：

[1] Weiz Forsch Gesell mbH, NanoTecCtr, A-8160 Weiz, Austria

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[3] Helmholtz Zentrum Berlin Mat & Energie GmbH Elekt, D-12489 Berlin, Germany

[4] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[5] Graz Univ Technol, Inst Festkorperphys, A-8010 Graz, Austria

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 05期

关键词：

15;

D O I：

10.1021/ja109734e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present a novel core-shell-surface multifunctional structure for dendrimers using a blue fluorescent pyrene core with triphenylene dendrons and triphenylamine surface groups. We find efficient excitation energy transfer from the triphenylene shell to the pyrene core, substantially enhancing the quantum yield in solution and the solid state (4-fold) compared to dendrimers without a core emitter, while TPA groups facilitate the hole capturing and injection ability in the device applications. With a luminance of up to 1400 cd/m(2), a saturated blue emission CIE(xy) = (0.15, 0.17) and high operational stability, these dendrimers belong to the best reported fluorescence-based blue-emitting organic molecules.

引用

页码：1301 / 1303

页数：3

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