Facile Bottom-Up Synthesis of Coronene-based 3‑Fold Symmetrical and Highly Substituted Nanographenes from Simple Aromatics

A facile and efficient self-sorting assemble (CSA) strategy has been paved for bottom-up construction of the 3-fold symmetrical and highly substituted hexa-<i>cata</i>-hexabenzocoronenes (<i>c</i>-HBCs), the trithieno analogues, and larger disc-shaped PAHs from simple chemicals using benzylic carbons as tenon joints and a novel FeCl<sub>3</sub>-mediated AAA process as a key step. The structures of the as-prepared <i>c</i>-HBCs and related NGs were clearly identified by spectral analyses and X-ray crystallographic studies. Moreover, these can be envisaged to serve as new launching platforms for the construction of larger and more complex π-conjugated molecules and supramolecular architectures because of the modifiable and symmetrical decorations.