Takashi Kubo

TL;DR: In this paper, a four-stage amphoteric redox hydrocarbon (5) containing two phenalenyl units was prepared and four reversible redox waves with a small numerical sum of first oxidation (E1ox) and reduction potentials were successfully generated from the neutral 5 and were characterized by NMR, ESR, and UV−vis−near-IR spectroscopies.

TL;DR: An extremely simple dibenzopentalene synthesis from readily available 2-bromo-1-ethynylbenzenes using a nickel(0) complex is described and the cyclic voltammograms of these compounds reveal highly amphoteric redox properties.

TL;DR: An anthracene-linked bisphenalenyl Kekulé molecule with very significant singlet biradical character has shown a prominent covalent bonding interaction between molecules in a molecular aggregate.

TL;DR: Using spin-unrestricted density functional theory methods, the second hyperpolarizabilities of square nanographenes presenting different diradical characters were investigated from the viewpoint of open-shell singlet nonlinear optical systems as discussed by the authors.