Triarylamine-combined nitronyl nitroxide and its hole-transporting property
Triarylamine-combined nitronyl nitroxide and its hole-transporting property
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DOI：
10.1016/j.poly.2006.09.015
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发表时间：
2007-06
期刊：
影响因子：
2.6
通讯作者：
Takashi Kurata;Kenichiroh Koshika;Fumiaki Kato;J. Kido;H. Nishide
中科院分区：
文献类型：
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作者：
Takashi Kurata;Kenichiroh Koshika;Fumiaki Kato;J. Kido;H. Nishide
N，N-Bis(4-methoxyphenyl)-4-(1-oxyl-3-oxide-4，4，5，5-tetramethylimidazolin-2-yl)phenylamine(1)是一种与三芳胺基团结合的耐久的硝基氮氧自由基。电化学氧化过程中的循环伏安和UV-Vis吸收光谱表明，第一个氧化还原来自三芳胺基团。用光电子能谱测得1的电离电势为−5.4 eV，适合作为空穴传输材料。将自由基分子1分散在聚碳酸酯(ITO/1：聚碳酸酯/铝)中制备了单层空穴器件：自由基层的最大电流密度为0.2 mA/cm2，适用于有机电子器件。
N,N-Bis(4-methoxyphenyl)-4-(1-oxyl-3-oxide-4,4,5,5-tetramethylimidazolin-2-yl)phenylamine (1) was synthesized as a durable nitronyl nitroxide radical combined with a triarylamine moiety. Cyclic voltammetry and UV–Vis absorption spectra during the electrochemical oxidation of 1 revealed that the first redox was derived from the triarylamine moiety. The ionization potential of 1 was measured by photoelectron spectroscopy to be −5.4eV, which was appropriate as a hole-transporting material. A single-layer hole-only device was fabricated with the radical molecule 1 dispersed in polycarbonate (ITO/1:polycarbonate/Al): The radical-layer exhibited a maximum current density of 0.2mA/cm2, which was applicable for organic electronic devices.