Supporting data for "nonalternant nanographenes containing nitrogen-doped nonhexagonal pairs: synthesis, structural analysis and photophysical properties"

Under the guidance of Scholl reaction, various nanographenes containg N-doped pentagon-heptagon pairs were synthesized in recent years. Due to the unexpected rearrangements and tedious synthetic routes toward nanographenes containg N-doped pentagon-heptagon pairs during Scholl reaction, the facile methodology is highly desired. Here we reported a series of novel nanographenes bearing N-doped pentagon-heptagon pairs through a facile ring expansion strategy. The resultant physicochemical properties could be fine-tuned through the modifications of heptagon spacers. Furthermore, diverse N-doped nanographenes containing heptagon-octagon pairs obtained from this ring expansion strategy demonstrated the high efficiency of the proposed method.