Synthesis and characterization of pyrene-centered Starburst oligofluorenes

被引：89

作者：

Liu, Feng ^{[1
]}

Lai, Wen-Yong ^{[2
]}

Tang, Chao ^{[2
]}

Wu, Hong-Bin ^{[3
]}

Chen, Qing-Quan ^{[1
]}

Peng, Bo ^{[1
]}

Wei, Wei ^{[1
]}

Huang, Wei ^{[2
]}

Cao, Yong ^{[3
]}

机构：

[1] Fudan Univ, Dept Opt Sci & Engn, State Key Lab Adv Photon Mat & Devices, Shanghai 200433, Peoples R China

[2] Nanjing Univ Posts & Telecommun, IAM, Nanjing 210003, Peoples R China

[3] S China Univ Technol, Inst Polymer Optoelect Mat & Dev, Guangzhou 510640, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2008年 / 29卷 / 08期

关键词：

conjugated materials; light-emitting diodes (LED); morphology; photoluminescence; solar cells; starbursts;

D O I：

10.1002/marc.200700847

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of starburst materials (T1-T3) based on a pyrene core with four oligofluorene arms of different length have been synthesized and characterized. The starburst materials show good film forming ability and sky blue fluorescence. Electroluminescent devices take on a stable blue emission and the device performance increases with an increase in arm length. The single-layered device made of T3 has a maximum brightness of over 2 700 cd. m(-2) and a maximum current efficiency of 1.75 cd . A(-1), which is among the best in starburst material devices. The morphology of T1-T3 has been studied by atomic force microscopy. The starburst oligofluorenes with different arm lengths show a distinctive texture, which indicates the size dependent morphology of the starburst materials.

引用

页码：659 / 664

页数：6

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