The synthesis and characterization of a new type of a highly conjugated heterocyclic π-chromophore, consisting of a central triphenylene core fused with three perylene monoimide units (star-shaped molecules), is described. By judicious bay functionalization with tert-butylphenoxy substituents, aggregation was completely prevented by using 1,1,2,2-tetrachloroethane, allowing for a straightforward purification and, for the very first time, the complete separation of the constitutional isomers by HPLC. Both isomers can be easily distinguished by means of several conventional spectroscopic techniques. Furthermore, we have illustrated the absence of supramolecular aggregates and enhanced processability by noncovalent functionalization of graphene substrates, showing an outstanding homogeneity and demonstrating a different doping behavior in both isomers, making it possible to distinguish them by Raman spectroscopy.

中文翻译：

---

涉及高度扩展π共轭的异构纯正星状三亚苯基-Per杂化物。

描述了一种新型的高度共轭的杂环π发色团的合成和表征，该发色团由与三个tri单酰亚胺单元（星形分子）融合的中心三亚苯基核组成。通过用叔丁基苯氧基取代基进行明智的Bay官能化，可以通过使用1,1,2,2-四氯乙烷完全防止聚集，从而可以直接纯化，并且首次通过HPLC完全分离出结构异构体。两种异构体可以通过几种常规的光谱技术轻松区分。此外，我们已经说明了石墨烯底物的非共价官能化作用不存在超分子聚集体和增强的可加工性，