As cut-outs from a graphene sheet, nanographenes (NGs) and graphene nanoribbons
(GNRs) are ideal cases with which to connect the world of molecules with that of bulk carbon …

Helicenes have attracted considerable attention due to their inherent helical chirality and
extended π-conjugation. Recently, rapid progress has been witnessed in the preparation of …

Conspectus Nanographenes, which are defined as nanoscale (1–100 nm) graphene
cutouts, include quasi-one-dimensional graphene nanoribbons (GNRs) and quasi-zero …

Polycyclic aromatic hydrocarbons (PAHs) as a typical class of organic semiconductors
demonstrate unique optical, electrical, magnetic and other interesting properties due to their …

The last decade has witnessed multiple helicenes arising as an interesting class of
nonplanar polycyclic aromatics of inherent multihelicity. These molecules present esthetic …

Diradicaloid helicenes constructed formally by non‐benzenoid double π‐extension of
phenanthrene were synthesized by a common strategy involving double electrophilic …

For many years, organoboron compounds have been expected to show excellent electron-
injecting and-transporting properties. However, lowest unoccupied molecular orbital (LUMO) …

Helicenes are attractive non-planar polycyclic aromatic hydrocarbons with unique optical
and electronic properties. In recent years, the chemistry of “multiple helicenes” with plural …

This account focuses on the synthesis and structures of symmetric multiple carbohelicenes;
ie, fully fused polycyclic aromatic hydrocarbons containing two or more symmetric helicene …

A nonbenzenoid hydrocarbon, difluoreno [1, 9, 8-alkj: 1′, 9′, 8′-gfed] heptalene 1, is
synthesized. Experimental and theoretical investigations demonstrate that the planar and …