SEM images of microstrands of 34b (a–c) and nanofibers of 34c (d–f).

SEM images of microstrands of 34b (a–c) and nanofibers of 34c (d–f

Helical forms of pyrazinacene nanotubes. (a) (i)–(iii) SEM images

Pyrazinacenes 44–47 and their calculated HOMO structures. In the

SEM images of microstrands of 34b (a–c) and nanofibers of 34c (d–f

PDF) Putting the 'N' in ACENE: Pyrazinacenes and their structural

Putting the 'N' in ACENE: Pyrazinacenes and their structural

PDF) Putting the 'N' in ACENE: Pyrazinacenes and their structural

Putting the 'N' in ACENE: Pyrazinacenes and their structural

PDF) Putting the 'N' in ACENE: Pyrazinacenes and their structural

PDF) Putting the 'N' in ACENE: Pyrazinacenes and their structural

SEM images of microstrands of 34b (a–c) and nanofibers of 34c (d–f

Putting the 'N' in ACENE: Pyrazinacenes and their structural

PDF) Putting the 'N' in ACENE: Pyrazinacenes and their structural

PDF) Putting the 'N' in ACENE: Pyrazinacenes and their structural