Synthesis, Photophysical Properties, and Field-Effect Characteristics of (Ethynylphenyl)benzimidazole-Decorated Anthracene and Perylene Bisimide Derivatives
作者:I-Lin Lee、Sie-Rong Li、Kuan-Fu Chen、Po-Jen Ku、Ashutosh S. Singh、Hui-Tung Kuo、Yuh-Sheng Wen、Chi-Wei Chu、Shih-Sheng Sun
DOI:10.1002/ejoc.201200032
日期:2012.5
anthracene derivatives, but only weak emission was observed for perylene bisimide derivatives. The anthracene derivatives showed typical p-type semiconducting character, even when the derivatives were substituted with electron-withdrawing benzimidazole groups at the 9- and 10-positions, which apparently does not lower the LUMO levels to transform them into electron-transporting molecules. Perylene bisimide
设计并制备了一系列具有吸电子苯并咪唑取代基的蒽和苝双酰亚胺衍生物。对这些新化合物的电化学和光物理特性以及场效应迁移率进行了详细研究。与母体化合物相比,吸电子苯并咪唑基团的引入降低了蒽和苝双酰亚胺衍生物中的 LUMO 水平。所有蒽衍生物均观察到强发射,但苝双酰亚胺衍生物仅观察到微弱发射。蒽衍生物显示出典型的 p 型半导体特性,即使这些衍生物在 9 位和 10 位被吸电子苯并咪唑基团取代,这显然不会降低 LUMO 能级以将它们转化为电子传输分子。苝双酰亚胺衍生物显示出典型的 n 通道半导体特性,具有低阈值电压和约 10 倍的电子迁移率。5.2 × 10–5 cm2 V–1 s–1。