Synthesis of Dendritic Oligo-Spiro(fluorene-9,9′-xanthene) Derivatives with Carbazole and Fluorene Pendants and their Thermal, Optical, and Electroluminescent Properties

✍ Scribed by Zengze Chu; Dan Wang; Chao Zhang; Xing Fan; Yanwei Tang; Lin Chen; Dechun Zou

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 247 KB
• Volume: 30
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200900268

✦ Synopsis

Abstract

Two novel spiro‐configured ter(arylene‐ethynylene) derivatives, TSF‐Cz and TSF‐F, have been designed and synthesized using spiro(fluorene‐9,9′‐xanthene) (SFX) as building blocks, introducing a hole‐transporting carbazole and a fluorene chromophore as the peripheral functional group into the backbone through an oxygen atom. The two well‐defined oligomers possess good solubility, film‐forming quality, and high T~g~'s at 140 and 126 °C, respectively. In addition, these oligomers exhibit blue photoluminescence (PL) emission both in solution and solid states. The double‐layered devices fabricated using the two materials as the emitter show a sky‐blue emission with a brightness and a current efficiency of 7 613 cd · m^−2^ and 1.11 cd · A^−1^ for TSF‐Cz, and 1 507 cd · m^−2^ and 0.36 cd · A^−1^ for TSF‐F, respectively.

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