energy absorption at 570 nm and a strong band at 420 nm. The absorption and emission properties in different solvents have evidenced that although both regioisomers show dipole moment values of the excited states higher than those of the corresponding ground states, the dipole moment variation upon excitation is different for each isomer. Cyclic voltammetry measurements revealed that PDI-F2 has a stronger
通过将各种官能团引入到len烯湾位置而获得的核取代的im二
酰亚胺(PDI)是众所周知的用于光电应用的通用材料。the核的取代产生单,二和三取代的衍
生物,这些衍
生物受1,6-和1,7-二取代的PDI的区域异构体混合物支配。大多数情况下,由于难以通过常规方法或耗时的结晶过程分离它们,因此将二取代的异构体作为混合物使用。在这项工作中,由双[(9,9'-二辛基
芴基)]- N的区域异构混合物,N'-双-(10-
十八烷基)-per-3,4,9,10-双(二甲
酰亚胺), 1,6-(PDI-F1)和1,7-(PDI-F2异构体很容易通过柱色谱法分离和分离,随后进行表征。已经检查了PDI-F1的光谱特征,电子密度分布以及基态和激发态偶极矩,并将其与PDI-F2进行了比较。在两种PDI异构体的性质方面已观察到一些差异。该PDI-F1吸收光谱示出了独特的宽波段从450nm至640nm的跨越,而PDI-F2在570