Unexpected Azulene-to-Naphthalene Rearrangement Enables the Synthesis of Nanographenes with Tunable Two-Photon Absorption.
Azulene, a constitutional isomer of naphthalene, has long been regarded as a stable building block for constructing defect-containing nanographenes and azulene-to-naphthalene rearrangements generally require harsh conditions. In this study, we report an unexpected azulene-to-phenanthrene rearrangement during the Scholl...