A new blue light emitting and electrochromic polyfluorene derivative for display applications

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• 作者：Buket Bezgin Carbas ; Demet Asil ; Richard H. Friend ; Ahmet M. 脰nal
• 关键词：Polyfluorene ; Electrochromism ; Light emitting diode ; Conjugated polymer
• 刊名：Organic Electronics
• 出版年：February, 2014
• 年：2014
• 卷：15
• 期：2
• 页码：500-508
• 全文大小：1525 K

文摘

A novel blue emitting and electro-chromic conjugated copolymer based on 9,9鈥瞕ioctylfluorene (F8) and spiro(fluorene-9,9鈥?xanthene) (SFX) has been prepared. Optical, photophysical and electrochemical characterizations are given for the synthesized polymer; poly[spirofluorene-co-9,9鈥瞕ioctylfluorene] P(F8-SFX). Switching of the corresponding polymer between yellow and purple states is demonstrated, and blue emission with Commission Internationale de L鈥橢clairage (CIE) coordinate at (0.19, 0.15) is obtained from PLED device. The addition of a thin polymer interlayer ((F8)_0.5-(TFB)_0.5) is further investigated to maintain color purity. Furthermore, all polymer electrochromic device (ECD) based on P(F8-SFX) and poly(ethylene dioxythiophene) (PEDOT) was constructed. Spectroelectrochemistry and switching ability of the device were also investigated by UV-vis spectroscopy.