An Improved Synthesis of Pentacene: Rapid Access to a Benchmark Organic Semiconductor
作者:Chandrani Pramanik、Glen P. Miller
DOI:10.3390/molecules17044625
日期:——
Pentacene is an organic semiconductor used in a variety of thin-film organic electronic devices. Although at least six separate syntheses of pentacene are known (two from dihydropentacenes, two from 6,13-pentacenedione and two from 6,13-dihydro-6,13-dihydroxypentacene), none is ideal and several utilize elevated temperatures that may facilitate the oxidation of pentacene as it is produced. Here, we present a fast (~2 min of reaction time), simple, high-yielding (≥90%), low temperature synthesis of pentacene from readily available 6,13-dihydro-6,13-dihydroxypentacene. Further, we discuss the mechanism of this highly efficient reaction. With this improved synthesis, researchers gain rapid, affordable access to high purity pentacene in excellent yield and without the need for a time consuming sublimation.
五碳烯是一种有机半导体,可用于各种薄膜有机电子设备。尽管目前已知至少有六种不同的五并烯合成方法(两种来自二氢五并烯,两种来自 6,13-五烯二酮,两种来自 6,13-二氢-6,13-二羟基五并烯),但没有一种是理想的合成方法,而且有几种方法使用的温度较高,可能会在生产过程中促进五并烯的氧化。在此,我们介绍了一种快速(约 2 分钟反应时间)、简单、高产(≥90%)、低温合成的方法,利用现成的 6,13-二氢-6,13-二羟基并五苯。此外,我们还讨论了这一高效反应的机理。通过这种改进的合成方法,研究人员可以快速、经济地获得高纯度的并五苯,而且产量极高,无需耗时的升华过程。