Symmetry breaking

Quantum mechanics

Engineering

Chemical physics

Yield (engineering)

Materials science

Saddle

Diastereomer

Nambu–Jona-Lasinio model

Molecule

Mathematical optimization

Quantum yield

Geology

Stereochemistry

Paleontology

Physics

Organic chemistry

Mathematics

Optics

Helix (gastropod)

Molecular physics

Fluorescence

Composite material

Helicene

Structural engineering

Crystallography

Chirality (physics)

Chemistry

Chiral symmetry breaking

Snail

Angewandte Chemie International Edition

A unique rippled nanographene consisting of 52 fused rings is presented in which six out-of-plane motifs are fully fused into a triangular aromatic surface with a size of approximately 2.5 nm. Three units of an unprecedented fully lateral π-extended octabenzo[5]helicene together with three units of saddle-shaped heptagonal rings are combined in a single structure, leading to a well-soluble warped nanographene. The two diastereomeric pairs of possible enantiomers were isolated, and their linear, non-linear, and chiroptical properties were evaluated, revealing outstanding quantum yield and brightness values at low energy, together with good chiroptical responses in both absorption and emission.

A Triskelion‐Shaped Saddle–Helix Hybrid Nanographene