Cyano-Substituted Perylene Diimides with Linearly Correlated LUMO Levels

A series of nonbay region cyano-substituted tetrachloro­perylene diimides with tunable LUMO energy levels from −4.21 to −4.64 eV were developed. The excellent linear correlation between LUMO energy levels and the number of cyano groups indicated that the LUMO energy levels could be lowered effectively and predictably by incorporating cyano groups.本研究开发了一系列非湾区氰基取代的四氯苝二酰亚胺类化合物，其最低未占分子轨道（LUMO）能级可调范围为-4.21至-4.64电子伏特。最低未占分子轨道能级与氰基数目之间呈现优异的线性相关性，这表明通过引入氰基，可有效且可预测地降低该类材料的最低未占分子轨道能级。