Linear and star-shaped pyrazine-containing acene dicarboximides with high electron-affinity
作者:Jinjun Shao、Jingjing Chang、Chunyan Chi
DOI:10.1039/c2ob25680k
日期:——
A series of linear and star-shaped pyrazine-containing acene molecules 1a–b, 2a–b and 3 substituted by dicarboximide groups are synthesized via condensation reactions between o-diamine and dione. High electron affinity (up to 4.01 eV) is achieved due to the introduction of an electron-deficient pyrazine moiety and the attachment of electron-withdrawing dicarboximide groups. Some of these molecules show thermal liquid crystalline behavior and their space-charge limited current mobilities are measured. The high electron affinity and liquid crystalline property qualify them as promising electron transporting materials in organic optoelectronic devices.
一系列含有吡嗪的线性和星形多环分子1a-b、2a-b和3,通过邻二胺与二酮的缩合反应合成,这些分子被二氰基亚胺基团取代。由于引入了缺电子的吡嗪结构单元并结合了吸电子的二氰基亚胺基团,这些分子表现出很高的电子亲和势(最高达4.01电子伏特)。部分分子展现出热致液晶行为,并测量了它们的空间电荷限制电流迁移率。高电子亲和势和液晶性质使其成为有机光电子器件中有前途的电子传输材料。