Synthetic applications of oxidative aromatic coupling—from biphenols to nanographenes

M Grzybowski, B Sadowski… - Angewandte Chemie …, 2020 - Wiley Online Library
Oxidative aromatic coupling occupies a fundamental place in the modern chemistry of
aromatic compounds. It is a method of choice for the assembly of large and bewildering …

Toward negatively curved carbons

SH Pun, Q Miao - Accounts of Chemical Research, 2018 - ACS Publications
Conspectus Negatively curved carbons are theoretical carbon allotropes as proposed by
embedding heptagons or octagons in a graphitic lattice. Unlike five-membered rings in …

Highly contorted superhelicene hits near-infrared circularly polarized luminescence

S Míguez-Lago, IFA Mariz, MA Medel, JM Cuerva… - Chemical …, 2022 - pubs.rsc.org
Herein we describe a novel superhelicene structure consisting of three hexa-peri-
hexabenzocoronene (HBC) units arranged in a helical geometry and creating two carbo [5] …

Synthesis of a Dicyclohepta[a,g]heptalene‐Containing Polycyclic Conjugated Hydrocarbon and the Impact of Non‐Alternant Topologies

J Wang, FG Gámez, J Marín‐Beloqui… - Angewandte …, 2023 - Wiley Online Library
Incorporating non‐hexagonal rings into polycyclic conjugated hydrocarbons (PCHs) can
significantly affect their electronic and optoelectronic properties and chemical reactivities …

Construction of heptagon‐containing molecular nanocarbons

Chaolumen, IA Stepek, KE Yamada… - Angewandte Chemie …, 2021 - Wiley Online Library
Molecular nanocarbons containing heptagonal rings have attracted increasing interest due
to their dynamic behavior, electronic properties, aromaticity, and solid‐state packing …

Undecabenzo [7] superhelicene: a helical nanographene ribbon as a circularly polarized luminescence emitter

CM Cruz, S Castro‐Fernández… - Angewandte Chemie …, 2018 - Wiley Online Library
The synthesis and characterization of an enantiopure superhelicene nanographene is
reported in which two saddle‐shaped and one planar hexabenzocoronene (HBC) units are …

π-Extended corannulene-based nanographenes: selective formation of negative curvature

JM Fernandez-Garcia, PJ Evans… - Journal of the …, 2018 - ACS Publications
A geometrically selective bottom-up synthesis of curved nanographenes is described. The
synthetic methodology used involves the extension of the π-system of positively curved …

Octagon‐embedded carbohelicene as a chiral motif for circularly polarized luminescence emission of saddle‐helix nanographenes

MA Medel, R Tapia, V Blanco, D Miguel… - Angewandte …, 2021 - Wiley Online Library
We report a new family of hexa‐peri‐hexabenzocoronene (HBC)‐based helical
nanographenes incorporating π‐extended carbo [5] helicenes bearing an octagonal …

Negatively curved nanographene with heptagonal and [5] helicene units

Z Qiu, S Asako, Y Hu, CW Ju, T Liu… - Journal of the …, 2020 - ACS Publications
Negatively curved nanographene (NG) 4, having two heptagons and a [5] helicene, was
unexpectedly obtained by aryl rearrangement and stepwise cyclodehydrogenations. X-ray …

Helical nanographenes embedded with contiguous azulene units

N Ogawa, Y Yamaoka, H Takikawa… - Journal of the …, 2020 - ACS Publications
The azulene moiety, composed of contiguous pentagonal and heptagonal rings, is a
structural defect that alters the electronic, magnetic, and structural properties of graphenes …